Answers
Answer:
c. \(|F_T|=8\frac{Gm^2}{d^2}\)
Explanation:
In order to calculate the gravitational force on the mass of the center, you take into account the following formula:
\(F=G\frac{m_1m_2}{r}\) (1)
Furthermore, you take into account the components of the resultant vector.
By the illustration, you have that the force is given by:
\(F_T=F_1+F_2+F_3+F_4\\\\F_1=\frac{Gm_1m}{r^2}[-cos45\°\hat{i}+sin45\°\hat{j}]\\\\F_2=\frac{Gm_2m}{r^2}[cos45\°\hat{i}+sin45\°\hat{j}]\\\\F_3=\frac{Gm_3m}{r^2}[cos45\°\hat{i}-sin45\°\hat{j}]\\\\F_4=\frac{Gm_4m}{r^2}[-cos45\°\hat{i}-sin45\°\hat{j}]\)
where:
m1 = m
m2 = 2m
m3 = m
m4 = 4m
m: mass at the center of the system
The distance r is:
\(r=\sqrt{(\frac{d}{2})^2+(\frac{d}{2})^2}=\frac{d}{\sqrt{2}}\)
You replace the values for all masses and sum the contributions of all forces:
\(F_1=\frac{\sqrt{2}}{2}\frac{Gm^2}{(\frac{d^2}{2})}[-\hat{i}+\hat{j}]=\sqrt{2}\frac{Gm^2}{d^2}[-\hat{i}+\hat{j}]\\\\F_2=\frac{\sqrt{2}}{2}\frac{2Gm^2}{(\frac{d^2}{2})}[\hat{i}+\hat{j}]=2\sqrt{2}\frac{Gm^2}{d^2}[\hat{i}+\hat{j}]\\\\F_3=\frac{\sqrt{2}}{2}\frac{Gm^2}{(\frac{d^2}{2})}[\hat{i}-\hat{j}]=\sqrt{2}\frac{Gm^2}{s^2}[\hat{i}-\hat{j}]\\\\F_4=\frac{\sqrt{2}}{2}\frac{4Gm^2}{(\frac{d^2}{2})}[-\hat{i}-\hat{j}]=4\sqrt{2}\frac{Gm^2}{d^2}[-\hat{i}-\hat{j}]\\\\F_T=-2\sqrt{2}\frac{Gm^2}{d^2}}[\hat{i}+\hat{j}]\)
and the magnitude is:
c. \(|F_T|=8\frac{Gm^2}{d^2}\)
Related Questions
. A 5cm tall object is placed perpendicular to the principal axis of a convex lens of focal
length 10 cm. The distance of the object from the lens is 15 cm. Find the nature, position
and size of the image. Also find its magnification
Answers
The nature of the image formed by the convex lens is virtual, the position of the image is 30 cm away from the lens on the same side as the object, and the size of the image is twice the size of the object. The magnification is 2, meaning the image is magnified.
Given:
Object height (h) = 5 cm
Focal length of the convex lens (f) = 10 cm
Object distance (u) = 15 cm (positive since it's on the same side as the incident light)
To determine the nature, position, and size of the image, we can use the lens formula:
1/f = 1/v - 1/u
Substituting the given values:
1/10 = 1/v - 1/15
To simplify the equation, we find the common denominator:
3v - 2v = 2v/3
Simplifying further:
v = 30 cm
The image distance (v) is 30 cm. Since the image distance is positive, the image is formed on the opposite side of the lens from the object.
To find the magnification (M), we use the formula:
M = -v/u
Substituting the values:
M = -30 / 15 = -2
The magnification is -2, indicating that the image is inverted and twice the size of the object.
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Common Misconceptions about the Consumer Price Index [CPI]: Questions and
Answers
When the cost of food rises, does the CPI assume that consumers switch to less
desired foods, such as substituting hamburger for steak?
No. In January 1999, the BLS [Bureau of Labor Statistics] began using a geometric
mean formula in the CPI that reflects the fact that consumers shift their purchases
toward products that have fallen in relative price.... The CPI's objective is to calculate
the change in the amount consumers need to spend to maintain a constant level of
satisfaction.... The BLS is not assuming that consumers substitute hamburgers for
steak... Furthermore, the CPI doesn't implicitly assume that consumers always
substitute toward the less desirable good. Within the beef steaks item category, for
example, the assumption is that consumers on average would move up from flank
steak to filet mignon if the price of flank steak rose by a greater amount (or fell by less)
than filet mignon prices.
"Consumer Price Index," U.S. Bureau of Labor Statistics
Based on the text, how does the Consumer Price Index vary over the course of a
business cycle? E.2.1
O It changes according to the number of goods produced by a business.
O It changes according to availability of items, depending upon which items are priced the highest.
O It changes according to the desires of the consumers and access to lower-priced goods.
() It changes according to availability of ponds in the market hased on consumer needs
Answers
Consumer Price Index vary over the course of a business cycle It changes according to the desires of the consumers and access to lower-priced goods.
Based on the provided text, the Consumer Price Index (CPI) changes according to the desires of the consumers and access to lower-priced goods. The text mentions that consumers shift their purchases toward products that have fallen in relative price. The objective of the CPI is to calculate the change in the amount consumers need to spend to maintain a constant level of satisfaction.
The passage specifically states that the CPI does not assume that consumers substitute less desirable goods for more expensive ones. Instead, it acknowledges that consumers may move up within a category if the price of a lower-priced item rises more than that of a higher-priced item.
For example, within the beef steaks category, consumers are assumed to move up from flank steak to filet mignon if the price of flank steak rises by a greater amount or falls by less than filet mignon prices.
Therefore, the CPI takes into account consumer preferences and the availability of lower-priced goods. It reflects changes in prices and consumer behavior over the course of a business cycle, considering how consumers adjust their purchasing decisions based on price fluctuations and their desire for maintaining a constant level of satisfaction.
In summary, the CPI varies over the course of a business cycle based on consumer desires and access to lower-priced goods, rather than the availability of goods produced by businesses or the availability of specific items priced the highest.
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What is the magnitude of force in coulomb's law when one of the charge is double
Answers
In Coulomb's law, if one of the charges is doubled while the other remains the same, the magnitude of the force will also double, since the force is directly proportional to the product of the charges.
Coulomb's lawCoulomb's Law describes the electrostatic force between two charged particles. The force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Mathematically, Coulomb's Law can be expressed as:
F = k * (q1 * q2) / r^2
where F is the force between the charges, q1 and q2 are the magnitudes of the charges, r is the distance between them, and k is the Coulomb constant.
If one of the charges is doubled while the other remains the same, the magnitude of the force will also double, since the force is directly proportional to the product of the charges. Therefore, the new equation for the magnitude of the force in this scenario would be:
F' = k * (2q * q) / r^2 = 2 * (k * (q * q) / r^2) = 2F
where F' is the new force and F is the original force. So, when one of the charges is double, the magnitude of the force in Coulomb's Law will also double.
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A machine has a velocity ratio of 5 and the efficiency is 80% what effort would be needed to lift a load of 200N
Answers
Explanation:
To determine the effort needed to lift a load of 200N, given a velocity ratio of 5 and an efficiency of 80%, we can use the formula:
Efficiency = (Output Work / Input Work) * 100
Efficiency can also be calculated as the ratio of the output force to the input force. In this case, the output force is the load being lifted (200N), and the input force is the effort required.
Given that the velocity ratio is 5, it means that for every 5 units of distance the effort moves, the load moves 1 unit of distance. This implies that the effort is exerted over a greater distance than the load.
Let's denote the effort force as "E" and the distance moved by the effort as "dE." Similarly, the load force is "L," and the distance moved by the load is "dL."
Using the velocity ratio, we have the following relationship:
dE / dL = 5
Now, we can calculate the input work (Wi) and the output work (Wo):
Input Work (Wi) = Effort (E) * Distance moved by the effort (dE)
Output Work (Wo) = Load (L) * Distance moved by the load (dL)
Given that the efficiency is 80%, we can rewrite the formula for efficiency as:
0.80 = (Wo / Wi) * 100
Now, let's solve for the effort (E) using the given values:
Load (L) = 200N
Efficiency = 0.80
Velocity Ratio = 5
First, calculate the output work (Wo):
Wo = Load (L) * Distance moved by the load (dL)
Since the velocity ratio is 5, the distance moved by the load (dL) will be 1/5 of the distance moved by the effort (dE):
dL = (1/5) * dE
Wo = L * (1/5) * dE
Wo = 200N * (1/5) * dE
Wo = 40N * dE
Next, calculate the input work (Wi):
Wi = Effort (E) * Distance moved by the effort (dE)
Wi = E * dE
Now, substitute the values into the efficiency formula:
0.80 = (Wo / Wi) * 100
0.80 = (40N * dE) / (E * dE) * 100
0.80 = 40 / E * 100
0.80 * E = 40
E = 40 / 0.80
E = 50N
Therefore, the effort needed to lift a load of 200N with a velocity ratio of 5 and an efficiency of 80% is 50N.
Water flows at a speed of 13 m/s through a pipe that has a diameter of 1.2 m. What is the
diameter of the smaller end of the pipe that the water comes out with a speed of 30 m/s?
Answers
The diameter of the smaller end of the pipe is approximately 0.78 meters.
To determine the diameter of the smaller end of the pipe, we can use the principle of conservation of mass. According to this principle, the mass flow rate of water should remain constant throughout the pipe.
The mass flow rate is given by the equation:
Mass flow rate = density of water * cross-sectional area * velocity
Since the density of the water remains constant, we can write:
Cross-sectional area1 * velocity1 = Cross-sectional area2 * velocity2
Given that the velocity1 is 13 m/s, the diameter1 is 1.2 m, and the velocity2 is 30 m/s, we can solve for the diameter2 using the equation:
(pi * (diameter1/2)^2) * velocity1 = (pi * (diameter2/2)^2) * velocity2
Simplifying the equation:
(1.2/2)^2 * 13 = (diameter2/2)^2 * 30
Calculating the equation:
(0.6)^2 * 13 = (diameter2/2)^2 * 30
0.36 * 13 = (diameter2/2)^2 * 30
4.68 = (diameter2/2)^2 * 30
Dividing both sides by 30:
0.156 = (diameter2/2)^2
Taking the square root of both sides:
0.39 = diameter2/2
Multiplying both sides by 2:
0.78 = diameter2
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You have a jar of loose change which contains pennies, nickels, dimes, and quarters. The total value of the change in the jar is $104. In total, there are exactly 1000 coins in the jar. There are four times as many pennies as there are nickels and there are twice as many pennies as there are dimes. How many of each type of coin are there?
Answers
Answer:
Explanation:
w = number of pennies
x = number of nickels
y = number of dimes
z = number of quarters
0.01w + 0.05x + 0.10y + 0.25z = $104
w + x + y + z = 1000
w = 4x
w = 2y
nickels, dimes and pennies are in a ratio of 1:2:4
if there is 1 nickel, the value of penny + nickel + dime is $0.29
As we know the sum of all the coins is a whole dollar, we must find a point where multiples of 0.29 end in .00, 0.25, 0.50 or 0.75 so that quarters can make up the difference.
This first occurs at a count of 25 nickels, 50 dimes and 100 pennies.
That is 175 coins summing a total of $7.25
1000 coins / 175 coins/set = 5.71... sets
We know that we can only use full sets to reach an even dollar amount.
We only have a potential 5 sets to check, but because our set value comes to $7.25, let's guess at 4 sets to make the decimal portion go to .00
4($7.25) = $29
$104 - $29 = $75
$75 in quarters is 75(4) = 300 coins
300 + 4(175) = 1000 coins BINGO
4(1)(25) = 100 nickels
4(2)(25) = 200 dimes
4(4)(25) = 400 pennies
300 quarters
According to the principal of superposition,
Answers
Answer:
the resultant wave is the algebraic sum of all the waves reaching that particular point at a given time.
Explanation:
imagine two or three waves reaching a particular particle x at the same time. The particle will vibrate those waves and give out or transmit a resultant wave which is the algebraic sum of the incoming two waves. If both the waves have the same amplitude and phase, the resultant wave will be amplified. However if the waves have the same amplitude and equal but opposite phase then the resultant wave will be a straight line
A river flows with a uniform velocity vr. A person in a motorboat travels 1.22 km upstream, at which time she passes a log floating by. Always with the same engine throttle setting, the boater continues to travel upstream for another 1.45 km, which takes her 69.1 min. She then turns the boat around and returns downstream to her starting point, which she reaches at the same time as the same log does. How much time does the boater spend traveling back downstream
Answers
Answer:
t ’= \(\frac{1450}{0.6499 + 2 v_r}\), v_r = 1 m/s t ’= 547.19 s
Explanation:
This is a relative velocity exercise in a dimesion, since the river and the boat are going in the same direction.
By the time the boat goes up the river
v_b - v_r = d / t
By the time the boat goes down the river
v_b + v_r = d '/ t'
let's subtract the equations
2 v_r = d ’/ t’ - d / t
d ’/ t’ = 2v_r + d / t
\(t' = \frac{d'}{ \frac{d}{t}+ 2 v_r }\)
In the exercise they tell us
d = 1.22 +1.45 = 2.67 km= 2.67 10³ m
d ’= 1.45 km= 1.45 1.³ m
at time t = 69.1 min (60 s / 1min) = 4146 s
the speed of river is v_r
t ’= \(\frac{1.45 \ 10^3}{ \frac{ 2670}{4146} \ + 2 \ v_r}\)
t ’= \(\frac{1450}{0.6499 + 2 v_r}\)
In order to complete the calculation, we must assume a river speed
v_r = 1 m / s
let's calculate
t ’= \(\frac{ 1450}{ 0.6499 + 2 \ 1}\)
t ’= 547.19 s
liquids have higher coefficents of expansion than solids do in general. ture or false worth 29 points!
Answers
Answer:
true
Explanation:
Radio waves travel at the speed of light. What is the wavelength of a radio signal with a frequency of 9.45 x 10^7 Hz?
Answers
The wavelength of this radio signal is equal to 3.18 meters.
Given the following data:
Frequency = \(9.45 \times10^7\) Hz.Speed of light = \(3 \times 10^8\) m/s.What is wavelength?Wavelength can be defined as the distance between two (2) successive crests (troughs) of a wave.
How to calculate wavelength.Mathematically, the wavelength of a wave is given by this formula:
\(\lambda = \frac{V}{F}\)
Where:
F is the frequency of a wave.V is the speed of a sound wave.\(\lambda\) is the wavelength of a sound wave.Substituting the given parameters into the formula, we have;
\(\lambda = \frac{3 \times 10^8}{9.45 \times10^7}\)
Wavelength = 3.18 meters.
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The wavelength of the radio signal travel at speed of light is 3.17m.
Given the data in the question;
Frequency of the radio wave; \(f = 9.45 * 10^{7}Hz = 9.45 * 10^{7} s^{-1}\)Wavelength of a radio signal; \(\lambda = \ ?\)WavelengthWavelength the spatial period of a periodic wave. That is to say, when the shapes of waves are Wavelength , the distance over which they are repeated is called wavelength. Wavelength is expressed as;
\(\lambda = \frac{v}{f}\)
Where \(\lambda\) is wavelength, f is the frequency of the wave and c is the velocity or speed of light ( \(c = 3*10^8m/s\) )
We substitute our values into the expression above.
\(\lambda = \frac{c}{ f}\\ \\\lambda = \frac{3*10^8m/s}{9.45*10^7s^{-1}} \\\\\lambda = \frac{3*10^8ms/s}{9.45*10^7}\\\\\lambda = 3.17m\)
Therefore, the wavelength of the radio signal travel at speed of light is 3.17m.
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If a force of 20 newtons moves an object 10 meters, what is the work?
A.
180 J
B.
2.00 J
C.
200 J
D. 210 J
Answers
Answer:
The answer is option CExplanation:
The work done by an object given it's distance and force can be found by using the formula
work done = force × distanceFrom the question
force = 20 N
distance = 10 m
The work done is
work done = 20 × 10
We have the final answer as
200 JHope this helps you
Help please!!
During transcription, the DNA strand being transcribed has the following nucleotides: CTT CAG.
What would be the matching nucleotides on the mRNA?
Select one
1. GAA GUC
2.GUU GTC
3. AUU ATC
4. ACC AUC
Answers
Answer:
l think the correct answer is 1.GAA GUC
Question:why do some liquids flow really fast and other flow really slow?does temperature affect the rate of flow?
If the thickness of the liquid affects its flow rate
Then————
Figure out the then part by the question
Answers
Answer:
Some liquids flow really fast and some flow really slow.
Explanation:
This is because of a liquids viscosity , If the liquids viscosity is high it will flow really slow like syrup. But if it has high viscosity it will flow really fast much like water.
Hope this helped!! :)
An object is moving to the right and experiencing a net force that is Directed to the right .the magnitude of force is decreasing with time the speed of object is
Answers
Answer:
hdggdskjn ijwzsa
Explanation:
Please help me in questions 4_5_6
Answers
Yes, the force of the engine does work on the car as it accelerates the car forward. Work is defined as the transfer of energy that occurs when a force is applied over a distance, and in this case, the force of the engine is causing the car to move, so it is doing work.
How to explain the forceAs the car gains speed, its kinetic energy increases, which means it has more energy of motion. Kinetic energy is defined as one-half of the mass of an object times its velocity squared, so as the car's speed increases, so does its kinetic energy.
The gravitational potential energy of the car will remain constant as long as it stays on a horizontal road, assuming there is no change in elevation. Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, and since the car's position relative to the ground is not changing, its gravitational potential energy will remain constant.
The tractive force of the engine may change depending on the speed of the car and the resistance to motion that the car is encountering. As the car speeds up, the air resistance acting on the car will increase, which will require more force from the engine to maintain the same acceleration. Additionally, if the road surface is rough or there are inclines, the tractive force required to maintain the same speed or acceleration will also increase.
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Physics Momentum topic question. I will mark brainliest please help.
Answers
Answer:
10 m/s
Explanation:
Given
mass of ball 1, m1 = 1 kgmass of ball 2, m2 = 0.25 kginitial velocity of ball 1, u1 = 10 m/sinitial velocity of ball 2, u2 = 0 m/s [stationary]final velocity of ball 1, v1 = 7.5 m/smomentum of ball 2 after collision = 2.5 kg m/sSolving :
We do not require all of this informationOnly require points 2 and 6Momentum = mass x velocity⇒ velocity = 2.5 / 0.25⇒ velocity = 10 m/sI need help with the first question please
Answers
Work done on an object depends on the distance and force but independent of time.
What is Work ?Work is the product of force and the distance move in the direction of the force. It is measured in Joule.
If you use more force to move an object, there will be more amount of work because Work done = force x distance.
More force will give more about of work.
If you lift a 20 N object faster, you will experience the same amount of work because work is independent of time.
If you raise an object a shorter height, there will be less work done since work depends on the distance move in the direction of the force.
If you move a lighter object, you will experience a less work done because the weight of the object will reduce the work done
If you move an object farther, there will be more work to be done because of the increase in distance.
Therefore, Work done on an object depends on the distance and force but independent of time.
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The scientific symbol are matched with their respective unit of measurement as follows:
Force (F or Fw) = 30 Newton (N).Work done (W or E) = 90 Joules (J).Mechanical advantage (MA) = 10 (unitless).Momentum (p) = 24 kgm/s.Distance (d) = 25 meters (m).Power (P) = 8 watts (w).The amount of work that is required for each situation is given by:
More: You use more force to move an object.The same: You lift a 20 N object faster.Less: You raise an object a shorter height.Less: You move a lighter object.More: You move an object farther. What is a force?A force (F) can be defined as a push or pull of an object, which typically causes a change of motion (acceleration), especially due to the interaction of the object with another. Also, force (F) is measured in Newton (N).
What is work done?The work done (W) by an object is calculated by multiplying the force acting on it by the perpendicular distance covered by the object. Thus, work done (W) and energy (E) have the same unit i.e Joules (J).
In this exercise, you're required to match the scientific symbol with their respective unit of measurement and this is represented as follows:
Force (F or Fw) = 30 Newton (N).Work done (W or E) = 90 Joules (J).Mechanical advantage (MA) = 10 (unitless).Momentum (p) = 24 kgm/s.Distance (d) = 25 meters (m).Power (P) = 8 watts (w).Part B.The amount of work that is required for each situation is given by:
More: You use more force to move an object.The same: You lift a 20 N object faster.Less: You raise an object a shorter height.Less: You move a lighter object.More: You move an object farther.Read more on work done here: https://brainly.com/question/25573309
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How to find the angle in a projectile motion when displacement and heigh are the same
Answers
projectile's vertical speed v yv y v, start , y, drops prior to reaching its maximum height since its acceleration is in the opposite direction. Since the object's height is rising, the initial direction of the velocity is upward
.
At the projectile's highest point, vertical velocity zeroes out. After reaching the highest point, the vertical speed increases due of the same-direction acceleration. As the object's height lowers, the vertical velocity has a downward direction.
In projectile The beginning vertical velocity determines the maximum height. Increasing the launch angle raises the maximum height because steeper launch angles have a larger vertical velocity component.
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A cylindrical capacitor is being charged by an exponentially decreasing current. The inner cylinder of the capacitor is positive and the outer cylinder is negative. What is the direction of the magnetic field between the two cylinders while the capacitor is charging
Answers
The direction of the magnetic field between the two cylinders while the capacitor is charging is counterclockwise.
According to Maxwell's law of induction, a changing electric field induces a magnetic field, B given by the equation
∫B.ds = μεdΦ/dt where ds = path length of magnetic field, μ = permeability of free space, ε = permittivity of free space and dΦ/dt = rate of change in electric flux. The electric field in the cylindrical capacitor is directed from the inner cylinder to the outer cylinder since the inner cylinder is positive and outer cylinder negative.
For an electric current which increases, the rate of change of electric flux is positive and this produces a magnetic field in the clockwise direction.
Since in this case, we have an exponentially decreasing current, dΦ/dt is negative. Thus, this will produce a magnetic field opposite to that of an increasing current. So, the direction of the magnetic field would be counter clockwise.
So, the direction of the magnetic field between the two cylinders while the capacitor is charging is counterclockwise.
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A 750 kg race car accelerates to the right. The engine applies a force of
+7000 N to the car. The total friction on the car in the opposite
direction is -200 N.
Find the net force on the car then use 'Fnet = m a' to find the
acceleration.
O a
b
Oc
Od
12.4 m/s2
10.5 m/s2
8.0 m/s2
9.1 m/s2
Answers
Answer: Option D, 9.1 m/s^2
The weather map shows some conditions in the atmosphere at noon on a
particular day.
Where would you expect the warmest weather?
A. In the southwest
B. In the northwest
C. In the southeast
D. In the northeast.
Answers
The geographical region where I would expect the warmest weather is: C. in the southeast.
What is a weather map?A weather map can be defined as a type of chart that is typically used to provide information about the average atmospheric condition of a particular geographical region over a specific period of time.
Based on the weather map shown in the image attached below, we can infer and logically deduce that the geographical region where the warmest weather is expected is in the southeast due to its very high atmospheric pressure.
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a healthy person has a body temperature of 37 degree celsius. if they jump into an ice bath after sports training their temperature only decreases slowly. how can you explain this when a lump of metal at 37 celsius degree placed in the same ice bath cools down to 0 celsius degree in only a couple of minutes
Answers
1. Heat Capacity: The heat capacity of the human body is much higher than that of a small lump of metal. The human body has a large mass and contains a significant amount of water, which has a high heat capacity. This means that it requires more energy to change the temperature of the body compared to a small metal object. As a result, the body cools down more slowly in the ice bath.
2. Insulation: The human body is well-insulated with layers of skin, fat, and clothing. These layers act as thermal barriers and slow down the transfer of heat between the body and the surroundings. On the other hand, a small metal object does not have any significant insulation, allowing heat to transfer more rapidly to the colder environment.
3. Biological Regulation: The human body has mechanisms to regulate its temperature, such as vasoconstriction (narrowing of blood vessels) and shivering, which help generate heat and maintain core temperature. These regulatory processes help to slow down the cooling process and preserve the body's temperature within a narrow range.
4. Surface Area-to-Volume Ratio: The surface area-to-volume ratio is higher for a small lump of metal compared to a human body. A higher surface area facilitates faster heat transfer. Since the metal object has a relatively larger surface area compared to its volume, it cools down more quickly in the ice bath.
Overall, the combination of the human body's higher heat capacity, insulation, biological regulation, and lower surface area-to-volume ratio compared to a small metal object contributes to the slower cooling rate when immersed in an ice bath.
In a chemical reaction, the mass of the reactants is 13,3 grams. Which of the
following could represent the mass of the products?
Answers
Answer:
my assuytyyhyyyyyy gftdrrdtiifyb tvhyvth rv b yy
Match each letter to the description
A woman walks in a
straight line with the sun
to her right at six o'clock in
the morning. Toward
which pole does she walk?
A line of latitude.
A man walks in a straight
line with the sun to his
right at six o'clock in the
evening. Toward which
pole does he walk?
A line of longitude.
Answers
A woman walks in a straight line with the sun to her right at six o'clock in the morning.
The sun rises East of her, so the woman is walking toward the North pole.
A man walks in a straight line with the sun to his right at six o'clock in the evening.
The sun sets West of him, so the man is walking toward the South pole.
The woman and the man are both walking along lines of constant longitude.
Use the energy equation, your answer from #5, and Planck’s constant (6.63E-34) to find the approximate energy of this photon:
4.8E-19 Joules
3.0E-19 Joules
3.0E-17 Joules
1.21 Gigawatts
Answers
The energy for the Photon with frequency 4.6 x 10 raise to power 14 Hertz is equal to 3 × 10 raised to power minus 19.
What is a Photon?A photon is an elementary particle that is a quantum of the electromagnetic field and the force carrier for the electromagnetic force. Photons are massless, so they always move at the speed of light in vacuum, 299792458 m/s.
What is energy equation for radiation?Energy equation is a derivative of the energy mass equation and is used to give energy of an electromagnetic or particle have frequency.
Given:
Frequency of the photon = 4.6×10¹⁴
Value of plank constant = 6.626×10⁻³⁴
Now from energy equation we have-
Energy of photon = plank constant × frequency of the photon
E = h × v
Where,
E is Energy of photon
h is plank constant
v is frequency of the photon
On substituting values in the energy equation we get,
E = 6.626 × 4.6×10⁻²⁰
E = 3 × 10⁻¹⁹
The energy for the Photon with frequency 4.6 x 10 raise to power 14 Hertz is equal to 3 × 10 raised to power minus 19.
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Mechanical energy appears in the form of _____ energy and _____ energy.
Answers
Answer:
Potential and kinetic
Explanation:
If you are doing ck12 this is the answer
According to the law of conservation of energy, if the ocean water cools, then something else should warm. What is it that warms?
Answers
Answer:
The answer is air
Explanation:
A chain is wrapped around pulley and pulled with a force of
16.0N .The pulley has a radius of 0.20 m. The pulley's rotational
speed increases from 0.0 to 17.0 rev/min in 5.00s What is the moment
of inertia of Pulley?
Answers
The moment of inertia of Pulley is 8.89 kgm².
Angular acceleration of the pulleyThe angular acceleration of the pulley is calculated as follows;
\(\alpha = \frac{\omega_f - \omega _i}{t}\)
where;
ωi is the initial angular velocity = 0 ωf is the final angular velocity = 17 rev/mint is the time of motionFinal angular velocity in radian per second is calculated as
\(\omega _f = 17 \frac{rev}{\min} \times \frac{2\pi \ rad}{1 \ rev} \times \frac{1\min}{60 \ s} = 1.78 \ rad/s\)
Now, solve for angular acceleration
\(\alpha = \frac{1.78-0}{5} \\\\\alpha = 0.36 \ rad/s^2\)
Moment of inertia of the pulleyThe the moment of inertia of Pulley is determined using the formula for torque.
Iα = Fr
I = Fr/α
I = (16 x 0.2)/(0.36)
I = 8.89 kgm²
Thus, the moment of inertia of Pulley is 8.89 kgm².
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Find the Product or expression of: (4x-2)2
Answers
Answer:
8x-4Explanation:
Distributive property:
A(B+C)=AB+AC
(4x-2)2
Switch sides.
→ 2(4x-2)
Multiply.
⇒ 2*4x=8x
⇒ 2*2=4
Rewrite the problem down.
⇒ = 8x-4
\(\Longrightarrow: \boxed{\sf{8x-4}}\)
Hence, the final answer is 8x-4.I hope this helps you! Let me know if my answer is wrong or not.
Answer: 8x - 4
Explanation:
(4x -2)*2
apply distributive property
2* 4x - 2 * 2
Multiply the monomials = 8x
2*4x - 2*= 8x-2*2
calculate =
8x-4
Answer: 8x - 4
23) What is the magnitude of the electric field intensity at a point where a proton experiences an
electrostatic force of magnitude 2.30 x 10-25 newton?
Answers
Answer: I am so sorry i hadn't learned this Yet~!
Explanation: