if at a concert, a wind blows directly from the orchestra toward you, the frequency of the sound you hear will be:A) decreased.
B) increased.
C) neither decreased nor increased.
Answers
If at a concert, a wind blows directly from the orchestra toward you, the frequency of the sound you hear will be neither decreased nor increased. Option C is correct.
The frequency of the sound you hear at a concert will not be affected by the direction of the wind blowing from the orchestra toward you. The frequency of sound waves is determined by the source of the sound and the speed of sound in air, and is not affected by the wind blowing in a particular direction.
However, the intensity or volume of the sound may be affected by the wind, especially if it is a strong wind. In this case, the sound waves may be partially blocked or scattered by the wind, leading to a reduction in the volume of the sound that reaches you.
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Related Questions
What are the two ways a nose cone will affect the flight of a rocket?
Answers
The nose cone of a rocket can affect its flight in two primary ways: aerodynamic efficiency and stability.
Aerodynamic Efficiency: The shape of the nose cone plays a crucial role in reducing aerodynamic drag, which is the resistance that a rocket experiences as it moves through the atmosphere. A well-designed nose cone is streamlined and tapered, allowing the rocket to move through the air with minimal drag. By reducing drag, the rocket can achieve higher speeds and improve its overall efficiency. The nose cone's shape is typically designed to minimize shockwaves and pressure build-up, ensuring smooth airflow over the rocket's surface.
Stability: The nose cone also contributes to the rocket's stability during flight. Stability is essential to maintain control and prevent the rocket from veering off course or experiencing undesirable oscillations. The nose cone's position and shape affect the distribution of the rocket's center of gravity (CG) and center of pressure (CP). The CG represents the average location of the rocket's mass, while the CP is the point where the aerodynamic forces acting on the rocket are considered to be concentrated. For stable flight, the CP must be located behind the CG. The nose cone can be designed to provide stability by contributing mass towards the front of the rocket, shifting the CG forward, or by incorporating fins or other stabilizing features.
In summary, the nose cone of a rocket influences its flight by reducing aerodynamic drag and improving efficiency, as well as contributing to stability by affecting the rocket's center of gravity and center of pressure.
*CAN SOMEONE HELP ME 100 POINTS*
Answers
Answer:
its the For a fossil to form, several conditions have to be met. First of all, the animal had to live in the given area! Animals live in many environments on Earth, but not everywhere. The water above many lake bottoms and many areas of the deep ocean bottom are stagnant. The bottom water is never exchanged with surface waters, so the water contains no dissolved oxygen. Animals cannot live without oxygen, so no animals live there. In these situations, the only possibility of fossilization is if a fish or other swimming animal dies in oxygen-rich waters above, sinks down into the stagnant muddy bottom, and is buried by sediments.
Explanation:
its the For a fossil to form, several conditions have to be met. First of all, the animal had to live in the given area! Animals live in many environments on Earth, but not everywhere. The water above many lake bottoms and many areas of the deep ocean bottom are stagnant. The bottom water is never exchanged with surface waters, so the water contains no dissolved oxygen. Animals cannot live without oxygen, so no animals live there. In these situations, the only possibility of fossilization is if a fish or other swimming animal dies in oxygen-rich waters above, sinks down into the stagnant muddy bottom, and is buried by sediments.
Once the object hits the water, the forces are balanced and the object will stop. Support your answer with reasoning.
Answers
S.E.A.L Certified Answer ↓↓↓
FALSE...
Explanation:
Once the box hits the water, the forces are balanced (50 N down and 50 N up). However, an object in motion (such as the box) will continue in motion at the same speed and in the same direction. When the box strikes the water, it stops accelerating; yet it does not stop moving
Because:
Once the object hits the water, the forces are balanced and the object will stop. Support your answer with reasoning.
↑↑↑ FALSE ↑↑↑BRAINLIEST PLS... :)
When a circular motion spinning at 32 degrees, what's the most likely cause for the spinning object to slow down
Answers
Answer:
Loss of momentum
Explanation:
Centripetal force is the name given to any force which causes a change in direction of velocity toward the center of the circular motion. The component of the force which is perpendicular to the velocity is the part resulting in the centripetal force
6. If Dr. Swasey is like most psychologists, where does she probably work?
a. university/college
b. self-employed
c. federal government
d. state or local government
Answers
Answer: University/college
Explanation:
A psychologist is someone who studies the cognitive, emotional, and mental states of people by observing and recording how people relate with each other and their environment.
Most psychologists are found in universities in order to help students who have emotional issues or seeking answers to certain questions.
The volume of a piece of metal of a mass 6 gram is 15cm3. What is the density of the metal piece?
Answers
Answer:
0.4 g/cm^3
Explanation:
The density of an object can be found using the following formula.
d= m/v
where m is the mass and v is the volume.
The mass of the metal is 6 grams and the volume is 15 centimeters^3
m=6 g
v= 15 cm^3
Substitute these into the formula.
d= 6 g/ 15 cm^3
Divide 6 g by 15 cm^3 (6/15=0.4)
d= 0.4 g/ cm^3
The density of the metal is 0.4 grams per cubic centimeter.
Density = (mass) / (volume)
Density = (6 g) / (15 cm³)
Density = (6/15) (g/cm³)
Density = 0.4 g/cm³
This 'metal' has less than half the density of water, and it floats on water ! It cannot be of Earthly origin, and must have been dropped here by aliens.
Either that, or else the metal has been hammered and stretched and beaten out and shaped so that it has an artificially large volume ... something like the way sailing ships are made out of thick plates of steel.
A ring of radius R has total charge Q.
A) At what distance along the
z-axis is the electric field strength a maximum?
Express your answer in terms of R.
B)What is the electric field strength at this point?
Express your answer in terms of the variables Q, R, and ?0
Answers
A) E = k * Q / R^2, electric field strength is maximum at R. B) Electric field strength at this point is E is k * Q / R^2 = k * Q / R^2,
What is electric field strength?A quantitative expression of the intensity of electric field at a particular location is called electric field strength.
A) Electric field strength is maximum at a distance of R from the ring, along the z-axis and the expression for the electric field strength can be given as: E = k * Q / R^2
k is Coulomb's constant and R is distance from the center of ring to the point where electric field is being calculated. Hence, the electric field strength is maximum at R.
B) Electric field strength at a distance of R from the center of the ring along the z-axis can be expressed as: E = k * Q / R^2
k is Coulomb's constant and R is radius of ring. Hence, the expression for the electric field strength at the point where it is maximum is:
E is k * Q / R^2 = k * Q / R^2,
k, Q, and R are variables and value of k is constant, equal to 8.99 * 10^9 N * m^2 / C^2. Variables Q and R are total charge on the ring and the radius of the ring respectively.
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NEED HELP ASAP!!!!!!!!!!
Answers
Answer:
*The same balloon put into the freezer would be smaller and shriveled.
* The volume decreases as the temperature decreases.
* using a hypothetical starting volume of 2 liters in the balloon at 42 degrees Celsius, we can use the equation V1/T1 =V2/T2
V2= 1.54 liters which proves when temperature decreases , volume decreases as well.
Explanation:
The volume increases as the temperature increases, and volume decreases as the temperature decreases.
using a hypothetical starting volume of 2 liters in the balloon at 42 degrees Celsius, we can use the equation V1/T1 =V2/T2
Change Celsius to kelvin by adding 273.
2 liters/ 315 K = V2/243 K
Cross multiply and then divide by 315 to find V2
2 liters x 243 K / 315 K = V2
The Kelvin cancels itself out.
486 liters /315=V2
V2= 1.54 liters.
This proves that when the temperature decreases , so does the volume.
a 5 kg ball and a 1 kg ball are dropped from the same height at the same time. which hits the ground first?
Answers
5 Kg will have a greater acclaration thus it will strike before 1 kg ball.
There are two cases
(Assuming same shape of both objects)
Without air
With air
Without air, In this case they will fall on ground at same exact time.
Because earth will give an equal acclaration to both the masses.
With air
In this case they will have force of M×g ('M' is their respective mass of each)
but impulsive force is constant so it will give different acclaration to both masses that will be :-
M×a = M×g - I(n)
(Here 'a' is acclaration 'I(n)' is impulsive force by the normal of air particle as they collide with the masses)
Thus :-
a = g - (I÷M)
As mass increase acceleration will be less decreased so
5 Kg will have a greater acclaration thus it will strike before 1 kg ball.
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Liana draws a diagram to show the direction of the electric force acting on a charged particle in a uniform electric field.
Which change would make the diagram correct?
A. Changing the charge to negative
B. Making the field lines point down
C. Changing the force to point right
D. Removing the force arrow
Answers
Answer:
changing the force to point right is the correct answer :)
The direction of the force acting on the field should be changed to point towards the right.
What is an electric field?An electric field is referred to as the region where the influence of charge is felt. Thus, the force acts in the direction of the electric field when the field is uniform.
Having said that, it follows that the direction of the force acting on the field should be changed to point towards the right.
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Distinguish the difference between height, width and depth auxiliaries.
Answers
Height, width, and depth are three fundamental dimensions used to describe the size and shape of objects in a three-dimensional space. Each dimension serves as an auxiliary measurement to help accurately define an object's proportions.
Height refers to the vertical extent of an object, which is typically measured from its base to its highest point. This dimension helps indicate the elevation or overall "tallness" of an object in comparison to its surroundings or other objects.
Width, on the other hand, refers to the horizontal extent of an object, which is typically measured from one side to the other at the object's widest point. Width helps convey the "broadness" of an object and provides context for understanding the object's size in relation to other dimensions.
Depth, also known as the third dimension, measures the object's distance from front to back. Depth is the extent to which an object extends into the space it occupies, providing information about the object's "thickness" or "fullness."
These dimensions are crucial when working with objects in various contexts, such as design, engineering, architecture, and other fields. Height, width, and depth are used to describe the proportions and scale of objects in relation to their environment, allowing for precise measurements and accurate representations of objects in both virtual and physical spaces.
Overall, understanding and distinguishing the differences between height, width, and depth auxiliaries enables a more comprehensive and accurate interpretation of objects in three-dimensional spaces.
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5. A buck converter is feeding an R load as shown in Figure with Vin = 50 V, R = 10 Q and switching frequency fs = 10 kHz under duty cycle of 60%.
Answers
The buck converter, with an input voltage of 50V, a load resistance of 10Ω, a switching frequency of 10 kHz, and a duty cycle of 60%, efficiently regulates the output voltage to power the R load.
A buck converter is a type of DC-DC converter that steps down the input voltage to a lower level. In this case, the input voltage is 50V. The converter operates at a switching frequency of 10 kHz, which means that the power switch turns on and off 10,000 times per second.
The duty cycle represents the percentage of time the power switch is on during each switching period. A duty cycle of 60% means that the power switch is on for 60% of the switching period and off for the remaining 40%. This duty cycle controls the output voltage.
When the power switch is on, energy is stored in an inductor and transferred to the load. The energy transfer occurs during this on-time, and the inductor stores energy in its magnetic field. When the power switch turns off, the inductor releases energy to the load. The output voltage is regulated by controlling the duty cycle.
With a duty cycle of 60%, the buck converter efficiently converts the 50V input voltage to a lower output voltage suitable for powering the 10Ω load. The converter adjusts the duty cycle to maintain a steady output voltage despite variations in the input voltage or load.
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What is a short circuit?
Answers
Answer:
A short circuit is an abnormal connection between two nodes of an electric circuit intended to be at different voltages. This results in an electric current limited only by the Thévenin equivalent resistance of the rest of the network which can cause circuit damage, overheating, fire or explosion.
hope it helps.Please give me brainliest O:-)
Answer:
A short circuit is an electrical circuit that allows a current to travel along an unintended path with no or very low electrical impedance.
Elmo finds himself at a Coke machine on a hot and dusty Sunday. The Coke machine requires exact change—two quarters and a dime. No other combination of coins will make anything come out of the machine. No stores are open; no one is in sight. Elmo is so thirsty that the only thing he cares about is how many soft drinks he will be able to buy with the change in his pocket; the more he can buy, the better. While Elmo searches his pockets, your task is to draw some indifference curves that describe Elmo’s preferences about what he finds.
(a) If Elmo has 2 quarters and a dime in his pockets, he can buy 1 soft drink. How many soft drinks can he buy if he has 4 quarters and 2 dimes? 1
(b) Does Elmo have convex preferences between dimes and quarters?
(c) Does Elmo always prefer more of both kinds of money to less?
(d) Does Elmo have a bliss point?
(e) If Elmo had arrived at the Coke machine on a Saturday, the drugstore across the street would have been open. This drugstore has a soda fountain that will sell you as much Coke as you want at a price of 4 cents an ounce. The salesperson will take any combination of dimes and quarters in payment. Suppose that Elmo plans to spend all of the money in his pocket on Coke at the drugstore on Saturday. Draw one or two of Elmo’s indifference curves between quarters and dimes in his pocket. Describe these new indifference curves in words.
Answers
The answers are- (a) 2 soft drinks. (b) Uncertain. (c) Not necessarily.
(d) No bliss point. and, (e) Steeper indifference curves.
(a) If Elmo has 4 quarters and 2 dimes in his pockets, he can buy 2 soft drinks. Since each soft drink requires two quarters and a dime, having double the amount of each coin allows him to make two purchases.
(b) Elmo's preferences between dimes and quarters may or may not be convex. Convex preferences imply that as Elmo increases the quantity of one type of money (quarters or dimes), the marginal utility he derives from each additional unit of that money diminishes. If Elmo's preference for soft drinks is based solely on the ability to purchase them and not on any diminishing marginal utility of the coins themselves, then his preferences may not exhibit convexity.
(c) Elmo does not necessarily always prefer more of both kinds of money to less. Given the specific context of the Coke machine, Elmo's only concern is to have the exact change required to obtain a soft drink. As long as he has the necessary combination of two quarters and a dime, having additional coins does not increase his utility further.
(d) Elmo does not have a bliss point in this scenario. A bliss point refers to the combination of goods or factors that maximizes an individual's utility or satisfaction. Since Elmo's sole objective is to purchase soft drinks from the Coke machine, his utility is maximized when he has the exact change required (two quarters and a dime). Having more coins does not enhance his utility beyond being able to buy a single soft drink.
(e) If Elmo had arrived at the Coke machine on a Saturday, with the drugstore across the street open, his preferences would change. Instead of being limited to the specific combination of two quarters and a dime, he could now use any combination of quarters and dimes to purchase as much Coke as he wants at a price of 4 cents per ounce.
In this case, Elmo's indifference curves between quarters and dimes would exhibit a downward slope, indicating that he is willing to trade off some quantity of one coin for a corresponding increase in the other, while still maintaining the same level of utility. The indifference curves would be steeper than the ones in the previous scenario, as Elmo can now acquire more soft drinks by having a larger combination of quarters and dimes.
These new indifference curves reflect Elmo's preference for more quarters and dimes, as they enable him to buy more Coke at the drugstore. The curves demonstrate that Elmo is willing to sacrifice some quantity of quarters to obtain additional dimes or vice versa, as long as the overall combination allows him to maximize the quantity of Coke he can purchase.
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A schematic can tell an electrician that the switches are normally
until the sensor senses smoke.
a. locked
b. open
c. closed
d. charged
Answers
The correct answer is Option B) Open.
A schematic can tell an electrician that the switches are normally open
until the sensor senses smoke.
What is a schematic diagram?A simple, understandable graphical representation of a plan or model is called a schematic diagram. Simple lines and symbols are used in schematics to convey details like what, how, and where. A schematic diagram's primary role is to highlight circuit components and the relationships between them. Schematics are a very useful tool for troubleshooting since they show which parts are connected in series or parallel and how.
An example of an electrical switch is one that is normally open. A typically open switch remains "off" when it is not compressed. The inside electrical connections are to blame for this. In a typically open switch, the contacts are open when the switch is off. This indicates that the switch is "off" because the electrical connection is damaged.
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According to the law of conservation of energy, which statement must be
true?
O A. Energy that is transformed is neither destroyed nor created.
B. The total energy in a system can only increase over time.
C. There is only one form of energy.
D. Energy can change only from nuclear to chemical.
SUBMIT
Answers
Answer:
the answer is A
Explanation:
This means that a system always has the same amount of energy
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside
For a closed economy, GDP is $31 trillion, consumption is $7 trillion, taxes are $3.0 trillion and the government runs a surplus of $1 trillion. What are private saving and national saving
Answers
What led astronomers to believe in the existence of dark matter?
A. the fact that space is black
B. the big bang theory
C. the apparent effects of the gravity of unseen matter on visible objects
D. the existence of black holes
Answers
A sample of an ideal gas is heated, and its kelvin temperature doubles. What happens to the average speed of the molecules in the sample?
Answers
A sample of an ideal gas is heated, and its kelvin temperature doubles. The average speed of the molecules in the sample will increases by a factor of \(\sqrt{2}\)
The root-mean square (RMS) velocity is the value of the square root of the sum of the squares of the stacking velocity values divided by the number of values. The RMS velocity is that of a wave through sub-surface layers of different interval velocities along a specific ray path.
Root mean square speed is a statistical measurement of speed.
The root mean square speed can be calculated as : V1 : \(\sqrt{3 R T / Mo}\)
if temperature becomes double
let T1 is initial temperature
So , T2 = 2 * T1
now ,
Root mean square speed will be (V2) = \(\sqrt{(3 R (2T)) / Mo}\)
= \(\sqrt{2}\) * \(\sqrt{3 R T / Mo}\)
= \(\sqrt{2}\) V1
Thus when temperature becomes double, the root mean square speed increases by a factor of \(\sqrt{2}\)
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a 0.145- kg baseball with an initial speed of 25 m/s rebounds with a speed of 39 m/s after being struck with a bat. if the duration of contact between ball and bat was 2.2 ms, what was the magnitude of the average force between ball and bat?
Answers
The magnitude of the average force between the baseball and bat is 9.23 × 10² N or 923 N
The baseball with a mass of 0.145-kg, having an initial velocity of 25 m/s rebounds after being struck by a bat with a velocity of 39 m/s. The duration of contact between the ball and bat is 2.2 ms. Our objective is to determine the magnitude of the average force exerted between the ball and bat.
Using the conservation of energy principle, we have to find the change in kinetic energy of the baseball. The change in kinetic energy is equal to the work done by the force. Therefore, average force can be calculated using the following formula:
Favg = Δp/ Δt
The impulse applied on the baseball by the bat is Δp = m (v2 - v1), where m is the mass of the baseball, v1 is the initial velocity of the baseball, and v2 is the final velocity of the baseball after being struck by the bat.
So, Δp = 0.145 kg × (39 m/s - 25 m/s)
Δp = 2.03 kg m/s
The time duration is given as 2.2 ms which is equal to 2.2 × 10⁻³ s
So, Favg = Δp/ Δt
Favg = 2.03 kg m/s ÷ 2.2 × 10⁻³ s
Favg = 9.23 × 10² N
The magnitude of the average force between the baseball and bat is 9.23 × 10² N or 923 N (rounded to the nearest whole number).
Therefore, the average force between the ball and bat is 923 N.
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what is a rocket engine that fires against the direction a spacecraft is headed so the spacecraft slows down?
Answers
The rocket engine that fires against the direction a spacecraft is headed so the spacecraft slows down is called Retro engine.
Spacecraft are the space automobiles that might be capable of flying out of doors of the Earth’s ecosystem in the area. They offer us a method of transportation from the Earth to the area and objects in it. There may be numerous spacecraft that are familiar to most of people e.g. Apollo 11 which took Neil Armstrong and his group to the Moon.
Crewed Spacecraft – Crewed spacecraft are the ones that carry people to the area. There have been several crewed spacecraft to the area consisting of Vostok 1 – the first crewed spacecraft in records dispatched by way of the United States of America.
Earth-Orbit Satellites – all of the satellites, which orbit across the Earth, fall in this class. The maximum tremendous satellite in orbit on the Earth is Hubble Telescope.
Space Probe – these are unmanned spacecraft that might be fitted with medical instruments for exploring objects in space e.g. planets, Moon, and solar.
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What happens when electromagnetic waves cause a disturbance in electric and magnetic fields?
A. Any particles in the fields move with them.
B. They cancel vibrations in electric and magnetic fields.
C. The electromagnetic waves transfer energy.
D. The fields line up parallel to each other.
Answers
Answer:
The answer is C. The electromagnetic waves transfer energy.
The electromagnetic waves cause a disturbance in the electric and magnetic field as the electromagnetic waves transfer energy. Thus, the correct option is C.
What are electromagnetic waves?The electromagnetic radiation (EMR) consists of waves of the electromagnetic (EM) field. These waves propagate through space and carry momentum and electromagnetic radiant energy as well. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. All of these waves form together different parts of the electromagnetic spectrum.
Electromagnetic waves or the EM waves are waves which are created as a result of vibrations between an electric field and a magnetic field. Electromagnetic waves are composed of oscillating magnetic and electric field lines and transmit energy.
Therefore, the correct option is C.
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The 70 kg student in figure p14. 43 balances a 1200 kg elephant on a hydraulic lift. What is the diameter of the piston the student is standing on?.
Answers
The piston the student is standing on has a 0.22-times larger diameter than the piston the elephant stands on.
What is mechanical advantage of a hydraulic lift?Pascal's law is shown via the hydraulic system.In doing so, we are able to use a modest force on the small piston to generate a bigger force on the huge piston.At each piston, the ratio between the force and the area must be the same.The three practical tools that make use of Pascal's law are hydraulic presses, hydraulic lifts, and hydraulic brakes.Given parameters:
Mass of the student: m = 70 kg.
Mass of the elephant: M = 1200 kg.
Let the diameters of the piston the student is standing on and the piston the elephant is standing on are respectively d and D.
Using Pascal's law , we can write,
Force applied by the student's weight ÷ area of the piston the student is standing on = Force applied by the elephant's weight ÷ area of the piston the elephant is standing on.
⇒ 70 kg × g / π d² = 1200 kg × g / π D²
⇒ 1400 d² = 70 D²
⇒ d= 0.22D.
Hence, The piston the student is standing on has a diameter that is 0.22 times larger than the piston the elephant is standing on.
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The previous value of a portfolio that must be reattained before a hedge fund can charge incentive fees is known as a:________
a. low water mark.
b. water mark.
c. benchmark.
d. high water mark.
Answers
The previous value of a portfolio that must be reattained before a hedge fund can charge incentive fees is known as a high watermark.
In the context of hedge funds, incentive fees are performance-based fees charged by fund managers. These fees are typically calculated as a percentage of the fund's profits above a certain threshold. The high water mark is an important concept that determines when incentive fees can be charged.
The high water mark refers to the highest previous value of the portfolio that has been achieved. It represents the peak value that the portfolio has reached in the past. In order for a hedge fund to charge incentive fees, the current value of the portfolio must exceed this high water mark. This ensures that investors are only paying fees on the profits made by the fund manager after surpassing previous performance levels.
By using the high water mark, hedge funds align their interests with those of the investors. Fund managers are incentivized to generate positive returns and recoup any losses before charging performance-based fees. This mechanism helps protect investors from paying fees on underperforming periods and encourages fund managers to focus on achieving new highs in portfolio value.
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What is the line segment formula?
Answers
Formula of
Line segment
is AB =
\(\sqrt{(x_{2} -x_{1} )^{2} } +\sqrt{(y_{2} -y_{1} )^{2} }\)
Line segment
is a part of line with definite length. It has two ending points whereas a line has no end points and extended infinitely in both the direction. Line which joins both ending points with possible shortest way is known as
Line segment
.
A ______________________ B
(x₁,y₁) (x₂,y₂)
This line segment can be represented as \(\frac{}{AB} /\frac{}{BA}\). In other word we can say line segment is
subset
of line, so it contains all the points of line lying between both end point of segment. For shorter length it can simply measure by
ruler
. A bar (-) is always on top of its notation {\(\frac{}{AB}\)}.
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Formula of Line segment is AB = \(\sqrt{(x_{2}-x_{1})^{2} } +\sqrt{(y_{2}-y_{1})^{2} }\)
Line segment
is a part of line with a definite length. It has two ending points whereas a line has no end points and extended infinitely in both the direction. Line which joins both ending points with possible shortest way is known as
Line segment
A ______________________ B
(x₁,y₁) (x₂,y₂)
This line segment can be represented as\(\overline{AB}/\overline{BA}\) . In other word we can say line segment is subset of line, so it contains all the points of line lying between both end point of segment. For shorter length it can simply measure by ruler A bar (-) is always on top of its notation {\(\overline{AB}/\overline{BA}\)}.
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suppose two worlds, each having mass M and radius R, coalesce into a single world. Due to gravitational contraction, the combined world has a radius of only 3 4R. what is the average density of the combined world as a multiple of r0, the average density of the original two worlds
Answers
Answer: the average density of the combined world is 256/81 times the average density of the original two worlds.
Explanation:
The total mass of the two original worlds is 2M, and their average density is given by:
ρ0 = 2M/(4/3 πR^3) = 3M/(2πR^3)
The final radius of the combined world is 3/4R, so its volume is:
V = 4/3 π(3/4R)^3 = 27/64 πR^3
The mass of the combined world is still 2M, so its density is:
ρ = 2M/V = 128M/(27πR^3)
The ratio of the average density of the combined world to that of the original worlds is:
ρ/ρ0 = (128M/(27πR^3)) / (3M/(2πR^3)) = 256/81
We need the answers to the question
A solution which has a solid solute is saturated at 25°C. It is then heated to 35°C. There is no change in the appearance of the solution. What term would now be associated with this solution?
A.
unsaturated
B.
saturated
C.
oversaturated
D.
supersaturated
Answers
Answer:
C. oversaturated
Explanation:
Sana nakatulong
gravitational potential energy depends on the of the object? group of answer choices mass and movement height, mass and the gravitational constant friction and movement height and friction
Answers
Gravitational energy depends upon the height, mass and the gravitational strength of the object.
Gravitational energy is the potential energy held via an item due to its high function in comparison to a lower function. In different phrases, it's miles strength associated with gravity or gravitational pressure.
For the gravitational force the method is P.E. = mgh, wherein m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 on the surface of the earth) and h is the height in meters. Note that gravitational capacity electricity has the identical devices as kinetic strength, kg m2 / s2.
Newton's regulation of gravitation: This law states that every factor mass inside the universe draws every different factor mass with a pressure this is immediately proportional to the made from their masses and inversely proportional to the rectangular of the space between them.
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What important scientific advance made bacteria less dangerous to humans
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Answer:
bacteria like
virus
(b) What is the probability that the electron can be detected in the middle one third of well, region (b)
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In order to determine the probability that an electron can be detected in the middle one-third of a well region, we need to take into account the wave function and the boundary conditions.The wave function represents the probability density of finding the electron in a particular location within the well. The boundary conditions are determined by the geometry of the well, which can be rectangular, triangular, or other shapes.
The Schrodinger equation is used to calculate the wave function and determine the probability density of finding the electron in a particular location. The wave function is a complex function that describes the position and momentum of the electron. It is also used to calculate the energy of the electron in the well.The probability of finding the electron in the middle one-third of the well can be determined by integrating the probability density over the middle one-third of the well region. This will give us the probability of finding the electron in that region. The integral can be evaluated using numerical methods or analytical methods, depending on the complexity of the wave function and the boundary conditions.In general, the probability of finding the electron in the middle one-third of the well will depend on the shape of the well, the energy of the electron, and the boundary conditions. For example, if the well is rectangular and the electron is in the ground state, then the probability of finding the electron in the middle one-third of the well will be high. However, if the well is triangular and the electron is in an excited state, then the probability of finding the electron in the middle one-third of the well will be lower.For such more question on probability
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