The path r(t) = (t)i + (t²-3) j describes motion on the parabola y=x²-3. Find the particle's velocity and acceleration vectors at t= - 4, and sketch them as vectors on the curve.
Answers
Given the path r(t) = (t)i + (t²-3) j describes motion on the parabola y=x²-3. We need to find the particle's velocity and acceleration vectors at t= - 4, and sketch them as vectors on the curve.
First, we need to calculate the velocity vector r'(t) of the particle, then acceleration vector r''(t) of the particle. Velocity vector: r(t) = (t)i + (t²-3) j Let's differentiate r(t) to find r'(t)r'(t) = i + 2tjAt t= -4, the velocity vector can be written as follows :r'(-4) = i - 8j
Acceleration vector: Let's differentiate r'(t) to find r''(t)r''(t) = 2jAt t= -4, the acceleration vector can be written as follows: r''(-4) = 2jNow, let's sketch them as vectors on the curve. The position vector r(t) is given by r(t) = (t)i + (t²-3) j. At t= - 4, the particle's position is:r(-4) = (-4)i + 13j
To sketch the velocity vector at t= -4, we draw an arrow from the point r(-4) = (-4)i + 13j to the point r(-4) + r'(-4) = (-3)i + 5j: The velocity vector is r'(-4) = i - 8j, so we draw an arrow with initial point at r(-4) and terminal point at r(-4) + r'(-4).To sketch the acceleration vector at t= -4, we draw an arrow from the point r(-4) = (-4)i + 13j to the point r(-4) + r''(-4) = 13j: The acceleration vector is r''(-4) = 2j, so we draw an arrow with initial point at r(-4) and terminal point at r(-4) + r''(-4). Velocity vector: r'(-4) = i - 8j Acceleration vector: r''(-4) = 2j .
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Related Questions
View the image below and answer the question.
The illustration above is an example of which of Newton's Laws?
a
Universal Law of Gravitation
b
Newton's Second Law
c
Newton's First Law
d
Newton's Third Law
Answers
Answer:
C. Newton's First Law of Motion
Explanation:
As the car comes to an abrupt stop, the body is still moving forward, and is moved back by the seatbelt, an outside force. If not for the seatbelt, the body would continue forward until acted on by the car itself, or thrown out of the car.
Answer:
1st law
Explanation:
anybody got any answers???
Answers
Answer:
b? to a?
Explanation:
It converts mechanical energy to electrical.
Therefore, Option A is the correct answer
In a movie, a character cuts a wire, which stops the countdown timer of a bomb. What does cutting the wire do to the circuit?
It opens the circuit so that electric charges do not flow to the timer.
It closes the circuit so that electric charges do not flow to the timer.
It opens the circuit so that electric charges flow to the timer.
It closes the circuit so that electric charges flow to the timer.
Answers
Answer:
A :>
Explanation:
It opens the circuit so that electric charges do not flow to the timer.
What is meant by a closed circuit ?When electricity flows over the entire path of an electric circuit, it is said to be closed or complete.
Here,
In a closed circuit, there is no interruption to the flow of electric current through it, because each point in the path of a closed circuit are connected.
When the wire is cut from the bomb, it stopped the countdown timer. This means that, while cutting the wire, the circuit of the bomb, which was a closed electric circuit, became an open circuit.
As a result, the current flow through the circuit is blocked by the open circuit system.
Therefore, the countdown timer of the bomb stopped by cutting the wire.
Hence,
It opens the circuit so that electric charges do not flow to the timer.
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what is measurement? why is it important to have regular supervision of the weights and measurement in the market?
Answers
Answer:
The comparison of unknown quantity with known quantity is called measurement.
Suppose the potential energy of a particle constrained to move along the x axis can be described by the function
Answers
To provide a complete response, I would need the function that describes the potential energy of the particle constrained to move along the x-axis. Without that information, I can provide a general understanding of potential energy functions.
In physics, potential energy is typically described by a function that depends on the position of the particle. Common examples include:
Gravitational potential energy: For a particle near the Earth's surface, the gravitational potential energy can be described by the function U = mgh, where m is the mass of the particle, g is the acceleration due to gravity, and h is the height of the particle above a reference level.Elastic potential energy: For a spring-mass system, the elastic potential energy can be described by the function U = (1/2)kx^2, where k is the spring constant and x is the displacement of the mass from its equilibrium position.Electric potential energy: For a charged particle in an electric field, the electric potential energy can be described by the function U = qV, where q is the charge of the particle and V is the electric potential.These are just a few examples, and the specific potential energy function would depend on the nature of the system and the forces acting on the particle. If you provide the specific function, I can assist you further in understanding its properties and implications.
About ParticleParticles or assignment words are a class of words that only have a grammatical meaning and do not have a lexical meaning. The meaning of an assignment word is determined by its relation to other words in a phrase or sentence and cannot be used independently or independently.
In physics and chemistry, a particle or particle is a very small object with dimensions, which can have several physical or chemical properties such as volume or mass.
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{WORTH BRAINLIEST WITH AN EXPLANATION} Janine is a police officer patrolling a street. She drives 2.2 km east, then 4.4 km west, then 1.7 km east. If east is the positive direction, which of the following equations are accurate? (select all that apply)
Answers
Answer:
Options (3) and (6)
Explanation:
Janine drives 2.2 km East.
Since, distances measured in the East are positive,
Displacement = 2.2 km
Then she drives 4.4 km west
Displacement = -4.4 km
Followed by 1.7 km in the East
Displacement = 1.7 km
Total displacement = 2.2 - 4.4 + 1.7 = -0.5 km
\(\overrightarrow{d}=-0.5\) km
Total distance covered by Janine = 2.2 + 4.4 + 1.7 = 8.3 km
d = 8.3 km
Therefore, Options (3) and (6) will be the answer.
PLEASE HURRY
Which correctly lists three properties that are used to identify minerals?
A. luster, weight, streak
B. magnetism, size, weight
C. size, weight, luster
D. streak, luster, magnetism
Answers
Answer:
D.Streak,Luster,Magnetism
Explanation:
Answer:
D. streak, luster, mangnetism
Explanation:
Cuz i took test on edge
explain the energy transfer that occurs between the fan, the windmill, and the weight beginning when the fan is turned on after it is turned off
Answers
Answer:
A wind turbine transforms the mechanical energy of wind into electrical energy. A turbine takes the kinetic energy of a moving fluid, air in this case, and converts it to a rotary motion. As wind moves past the blades of a wind turbine, it moves or rotates the blades. These blades turn a generator
a plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. assume that the plane reaches the required takeoff velocity at the end of the runway. what is the time needed to take off?
Answers
tTO = 26.8 sis the time needed to take off a plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long.
What is time ?Time is the ongoing pattern of existence and things that happen in what seems to be an unbreakable succession from the past through the present and into the future. It is a constituent quantity of many measurements that are used to compare the lengths of events or the gaps between them, to compare the sequence of occurrences, and to measure the rates at which certain quantities in the physical world or in conscious experience change. In addition to the three spatial dimensions, time is frequently considered a fourth dimension.
Although time has long been a crucial topic for research in philosophy, theology, and science, no definition of time that is universally applicable and free of circularity has ever been reached by academics. However, a number of different industries and areas, including business, industry, sports, the sciences, and the performing arts, all incorporate.
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What are the usual symbols we are using for the following properties of a star? brightness luminosity apparent magnitude absolute magnitude temperature mass Notice that two symbols are the same, and t
Answers
The symbol "m" is used for both apparent magnitude and absolute magnitude, but they represent different quantities in different contexts.
The usual symbols used for the following properties of a star are:
- Brightness: Usually represented by the symbol "B" or "m". It refers to the amount of light received from a star as observed from a particular location.
- Luminosity: Represented by the symbol "L". It refers to the total amount of energy radiated by a star per unit of time.
- Apparent Magnitude: Represented by the symbol "m". It is a measure of the brightness of a star as observed from Earth. Lower values indicate brighter stars.
- Absolute Magnitude: Also represented by the symbol "m". It is the intrinsic brightness of a star, defined as the apparent magnitude a star would have if it were placed at a standard distance of 10 parsecs (32.6 light-years) from the observer.
- Temperature: Represented by the symbol "T". It refers to the surface temperature of a star, typically measured in Kelvin.
- Mass: Represented by the symbol "M". It is the amount of matter contained in a star, typically measured in solar masses (M☉).
Note: The symbol "m" is used for both apparent magnitude and absolute magnitude, but they represent different quantities in different contexts.
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Question 4 options: The steps that lead you from dependence to independence are referred to as The _________ to Lifetime Fitness, Health, and Wellness.
Answers
Answer:
Stairway.
Explanation:
The steps that lead you from dependence to independence are referred to as the stairway to Lifetime Fitness, Health, and Wellness.
This ultimately implies that, these stairway or steps are very important and essential for all humans who seek Lifetime Fitness, Health, and Wellness.
A good health can be defined as the state of well-being (wellness) in which all of the components of an individual's health are balanced. These state of wellness comprises of six (6) important components and they are;
1. Physical: this is a measure of the state of an individual's body or the way the body functions. It is enhanced by eating right, working out or exercising, avoiding drugs and alcohol, maintaining a good body mass index etc.
2. Emotional: this deals with the state of an individual's mind being void of worries, negativity etc.
3. Social: this involves keeping a good relationship with friends, family and many others around.
4. Environmental: it deals with maintaining a hygienic surrounding, that is devoid of pollutants.
5. Mental or intellectual: avoiding unnecessary stress and anxiety while dealing or coping with the realities of life.
6. Spiritual: it encompasses belief systems, values, ideals, morality etc.
Hence, when an individual is able to balance all of these above mentioned components, then he or she is said to be healthy.
1. What is the most common type of distribution? How does this distribution
benefit the species?
Answers
Answer:
Clumped distribution is the most common type of dispersion found in nature. In clumped distribution, the distance between neighboring individuals is minimized.
It is ubiquitous in nature and statistics due to the central limit theorem
How far apart would two identical spheres be, each with a mass of 1000kg with a Force of 400 N between them be?
Answers
Answer:
Explanation:
we know that the value of the force of gravitation acting between two bodies is,
F=(GM₁.M₂)/R²............(i)
where F⇒ Gravitational force
G⇒ gravitational constant
and its value is 6.67×10⁻¹¹ m³/kg.sec²
M₁⇒mass of the first object
M₂⇒mass of the second object
R⇒ represents the distance separating the object's center
Now, as per the question,
since both objects are identical, M₁=M₂=1000kg
Gravitational force, F=400N
putting the values in equation (i),
400=(6.67×10⁻¹¹×1000×1000)/R²
so, after doing cross multiplication,
R²=(6.67×10⁻¹¹×1000×1000)/400
R²=(6.67×10⁻⁵)/400
R²=0.0166×10⁻⁵
R=0.407×10⁻³ m
so, the spheres must be separated by a distance 0.407×10⁻³m.
____________________ steels contain specified larger proportions of alloying elements.
Answers
Alloy steel mainly consists of a specific large number of alloying elements.
Alloy steel is formed when other elements containing metal and non-metal are introduced to carbon steel. The percentage of alloying elements will differ from 1.0% to 50%. On the basis of this percentage, alloy steel is categorised into two major types, low alloy steel and high alloy steel. This alloy shows different environmental, chemical and physical properties that can change with changes in elements used to make an alloy. this alloying can affect heat treatment conditions and mechanical properties of carbon steel. In general, the addition of impurities increases the strength of the steel.
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A cheetah has an average velocity of 70 mph. If a cheetah was chasing a water Buffalo for 23 miles, how long was the cheetah chasing its prey
Answers
Answer:
t=distance ÷ speed
23÷70
t=0.33 sec
Imagine that someone is injured, and their somatic nervous system is impacted. Would this be a life-threatening injury?
A.
Yes, that covers essential internal injuries.
B.
No, that is a minor part of how the body functions.
C.
Probably not since that system deals mostly with mobility.
D.
It is highly likely because that controls the brain and the spine.
Answers
Answer:
C. Probably not since that system deals mostly with mobility.
Explanation:
You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 7.0 m/s.
(a) How much time does it take for the tennis ball to reach its maximum height? (s)
(b) What is the maximum height above the ground that the tennis ball reaches? (m)
(c) When the tennis ball is at a height of 2.4 m above the ground, what is its speed? (m/s)
Answers
a). 1.2 s
b). 3.81 m
c) v= 6.8 m/s
d) v= 27.05 m/s
What is speed?Speed is define as the distance per unit time. It is also define as how fast an object is moving.
According to the question:
Height = 1.5 m , speed = 7.0 m/s.
a)By using 1st equation of motion
\(V = V_{0} + g*t.\\V = 0 \\V_{0} = 7.0 m/s.g = -9.8 m/s^2\\0 = 7 + (-9.8 m/s^2)*t\\t = 1.2 s\)
b.
\(h = 1.5 + V_{0} *t + 0.5g*t^2\\V_{0} = 7.8 m/s\\t = 1.2s , g = -9.8 m/s^2\\h = 3.81 m\)
c.
\(V^2 = V_{0} ^2 + 2g*d\\V_{0} = 7.8 m/s\\g= -9.8 m/s^2.\\d= 2.2-1.5 = 0.7 m\\V = 6.8 m/s\)
d.
\(V^2 = V_{0} ^2 + 2g*h\\V_{0} = 0\\g = +9.8 m/s^2.\\h = 6.8 m\\V = 27.05 m/s\)
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The following figure shows a Ferris wheel that rotates 6 times each minute and has a diameter of 17.8. What is the centripetal acceleration of a rider?
Answers
Answer:
106.8
Explanation:
If you multiply 6 and 17.8, you'll get 106.8.
If that's wrong, my apology's !
gamma rays are group of answer choices he nuclei. high-energy electromagnetic radiation. positrons. h nuclei. electrons.
Answers
Gamma rays are a group of high-energy electromagnetic radiation .
Gamma rays are a group of high-energy electromagnetic radiation, which are produced by the decay of atomic nuclei or other high-energy processes such as supernova explosions.
Gamma rays have the highest frequency and shortest wavelength in the electromagnetic spectrum, and they are highly penetrating and ionizing, meaning they can strip electrons from atoms and molecules as they pass through matter. Gamma rays can be harmful to living organisms, and can cause damage to cells and DNA.
Therefore , precautions are necessary to limit exposure to gamma rays in certain situations, such as in medical imaging or nuclear power plants.
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While the platform is rotating, the hanging mass remains attached to the test mass and is not removed from the platform. - True - False
Answers
False is the proper response. The magnitude of velocity is constant in a uniform circular motion. Therefore, the assertion is true.
How does the frequency or number of revolutions change when the washer's bulk rises?
The frequency increased with increasing bulk. The second formula can also be used to describe this relationship. The equation demonstrates the direct connection between acceleration and mass in the presence of constant load and diameter. The outcome is that an increase in mass causes an increase in velocity.
A uniformly moving item has a centripetal force that is constantly directed toward the center of the circle it is traveling in. When the applied circular path force is released, the item will travel on a single direction parallel to the curving route at a certain location.
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What energy transformations take place when a battery-operated radio is in use?
Answers
Answer:
chemical energy to sound energy Explanation: BATTERY CONSISTS OF CHEMICAL ENERGY.WHEN OUR RADIO IS OPERATED BY INSERTING BATTERY INTO IT,CHEMICAL ENERGY IN BATTERY IS CONVERTED INTO SOUND ENERGY AND THUS WE HEAR SOUND FROM THE RADIO.
Explanation:
If it is 2:00 AM at 90 East longitude, what time is it at 75 East longitude? 11. If it is 8:00 PM at 15 East, what time is it at 135 East longitude? 12. How many hours difference is there between 105 West longitude and the Prime Meridian? 13. If it is 9:30 AM in New York which is located 41 North Latitude, and 75 West Longitude, what t is it in Lima Peru which is located at 15 South latitude, and 75 West Longitude?
Previous question
Answers
11.The time at 75° East longitude would be 1 hour and 20 minutes behind. 12.The time at 135° degrees East longitude would be 4 hours ahead. and 13. the time in Lima, Peru (15° South latitude, 75° West longitude) would also be 9:30 AM.
At 2:00 AM at 90° East longitude, the time at 75° East longitude would be 1 hour and 20 minutes behind. This is because for every 15 degrees of longitude, there is a time difference of approximately 1 hour. Since the two longitudes in question have a difference of 15 degrees, we can divide this by 15 to calculate the time difference.
If it is 8:00 PM at 15° East longitude, the time at 135° East longitude would be 4 hours ahead. Similarly, for every 15 degrees of longitude, there is an approximate time difference of 1 hour. Since the two longitudes in question have a difference of 120 degrees, we can divide this by 15 to calculate the time difference.
There is a 7-hour difference** between 105° West longitude and the Prime Meridian (0° longitude). The Prime Meridian, passing through Greenwich, England, serves as the reference point for determining time zones. As one moves westward from the Prime Meridian, each 15 degrees of longitude corresponds to a time difference of approximately 1 hour. Therefore, the time at 105° West longitude would be 7 hours behind the time at the Prime Meridian.
If it is 9:30 AM in New York (41° North latitude, 75° West longitude), the time in Lima, Peru (15° South latitude, 75° West longitude) would also be 9:30 AM. The latitude does not affect the time difference between the two locations. However, since both locations have the same longitude (75° West), they would experience the same local time. The time difference between different latitudes is primarily significant for determining time zones rather than the actual time within a specific time zone.
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A narrow beam of white light enters a prism made of crown glass at a 45.0° incident angle. a) At what angle does the red (660 nm) component of light emerge from the prism given that crown glass has an n = 1.512 index of refraction for this wavelength? Give your answer in degrees. b) At what angle does the violet (410 nm) component of light emerge from the prism given that crown glass has an n = 1.530 index of refraction for this wavelength? Give your answer in degrees.
Answers
The red (660 nm) component of light emerges from the prism at an angle of 0.597° and the violet (410 nm) component of light emerges from the prism at an angle of 0.589°.
a) The angle at which the red (660 nm) component of light emerges from the prism can be calculated using Snell's law. The incident angle of the beam is 45.0° and the index of refraction of crown glass for this wavelength is 1.512.
sin i / sin r = n
where i is the incident angle, r is the angle of refraction, and n is the index of refraction.
sin i = n sin r
sin 45.0° = 1.512 sin r
r = sin⁻¹ (sin 45.0° / 1.512)
r = 0.597°
Therefore, the red component of light emerges from the prism at an angle of 0.597°.
b) The angle at which the violet (410 nm) component of light emerges from the prism can be calculated in a similar manner. The incident angle of the beam is still 45.0°, but the index of refraction of crown glass for this wavelength is 1.530.
sin i / sin r = n
where i is the incident angle, r is the angle of refraction, and n is the index of refraction.
sin i = n sin r
sin 45.0° = 1.530 sin r
r = sin⁻¹ (sin 45.0° / 1.530)
r = 0.589°
Therefore, the violet component of light emerges from the prism at an angle of 0.589°.
In summary, the red light and violet light emerge at angles 0.597° and 0.589° respectively from the prism.
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Regarding a string with constant tension T and linear density μ, calculate the ratio of standing wave frequency between adjacent harmonic modes f2/f1,f3/f2,f4/f3 and f5/f4. Consider a string fixed at both ends due to a tension T
and with linear density μ
. A transverse wave on such a string will have a speed v
given by
v
=
√
T
μ
.
The n
th harmonic mode on such a string configuration is given by
f
n
=
n
v
2
L
,
n
=
1
,
2
,
3
,
.
.
.
.
where L
is the length of the string. These harmonic modes correspond to the standing waves with frequency f
n
that can occur on the string.
Answers
The ratio of frequencies for f2/f1, f3/f2, f4/f3, and f5/f4 are 2, 3/2, 4/3, and 5/4 respectively.
The ratio of standing wave frequency between adjacent harmonic modes f2/f1, f3/f2, f4/f3, and f5/f4 can be calculated using the formula for the nth harmonic mode on a string configuration given by f_n = n(v/2L), where v = sqrt(T/μ) and L is the length of the string.
Using this formula, we can calculate the ratio of frequencies as follows:
f2/f1 = (2(v/2L))/(1(v/2L)) = 2
f3/f2 = (3(v/2L))/(2(v/2L)) = 3/2
f4/f3 = (4(v/2L))/(3(v/2L)) = 4/3
f5/f4 = (5(v/2L))/(4(v/2L)) = 5/4
Therefore, the ratio of standing wave frequency between adjacent harmonic modes are 2, 3/2, 4/3, and 5/4 for f2/f1, f3/f2, f4/f3, and f5/f4 respectively.
In conclusion, the ratio of standing wave frequency between adjacent harmonic modes can be calculated using the formula for the nth harmonic mode on a string configuration given by f_n = n(v/2L), where v = √(T/μ) and L is the length of the string. The ratio of frequencies for f2/f1, f3/f2, f4/f3, and f5/f4 are 2, 3/2, 4/3, and 5/4 respectively.
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explain in 2-3 sentences how a genotype determines a phenotype!
Will give b to the best one
Answers
Answer:
Genotypes are determined by tests. Genotype and phenotype sound the same but mean different things. The phenotype is determined by your genotypes and by your genes or traits, like hair color or type, eye shape and color, body and height. Were all unique, even identical twins, based on the way they look or act. Your uniqueness is based on your genetic make-up, that we inherited from our parents.
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Two stars are in a binary system. One is known to have a mass of 1.00 solar masses. If the system has an orbital period of 400 years, and a semi-major axis of 1.34E+10 km, what is the mass of the other star?
Answers
The mass of the other star in the binary system is approximately 0.541 solar masses.
To find the mass of the other star in the binary system, we can use Kepler's Third Law of Planetary Motion, which can be applied to binary star systems. The law states that the square of the orbital period (\(T\)) is proportional to the cube of the semi-major axis (\(a\)) of the orbit. Mathematically, this can be expressed as\(\(T^2 = \frac{4\pi^2}{G(M_1 + M_2)}a^3\), where \(M_1\) and \(M_2\)\) are the masses of the stars,\(\(G\)\) is the gravitational constant, and other variables have their usual meanings.
Given that one star has a mass of 1.00 solar masses, we can substitute the known values into the equation and solve for\(\(M_2\)\). Rearranging the equation, we have\(\(M_2 = \frac{4\pi^2}{G}(\frac{a^3}{T^2}) - M_1\)\).
Plugging in the values for\(\(a\) (1.34E+10 km) and \(T\) (400 years)\), and using the appropriate unit conversions, we can calculate the mass of the other star,\(\(M_2\\), to be approximately 0.541 solar masses.
Therefore, the mass of the other star in the binary system is approximately 0.541 solar masses.
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Objects A and B both start at rest. They both accelerate at the same rate. However, object A accelerates for 3x the time as object B. What is the final speed of object A compared to that of object B
Answers
Answer:
v_Object A = 3v_Object B
OR
1/3v_Object A = v_Object B
Explanation:
Let's see what variables we have in this problem.
Since the objects both start at rest, we have an initial velocity of 0 m/s.
The objects accelerate, so we will have acceleration.
Object A accelerates for 3x the time as Object B, so we have time.
The problem wants us to compare their final speeds, so we have final velocity.
Check what constant acceleration kinematic equation has these variables:
v = v₀ + atLet's create values for the unknown variables and compare the final velocities.
v = ?v₀ = 0 m/s (objects start at rest) a = 5 m/s²t = 10 sSince Object A accelerates for 3x the time as Object B, we can use t = 30 s for Object A.
Let's write the two equations:
v = (0) + (5)(10)v = (0) + (5)(30)Simplify these equations.
v = 50 m/sv = 150 m/sLet's use another set of values to compare the final velocities to see if the velocities differ by 100 m/s or Object A has 3x the final velocity of Object B.
v = ?v₀ = 0 m/s (objects start at rest) a = 3 m/s²t = 7 sWrite the two equations:
v = (0) + (3)(7)v = (0) + (3)(21)Simplify these equations.
v = 21 m/sv = 63 m/sNow we can clearly see that the final velocities are differed by 3x. Object A has 3x the final speed compared to that of Object B.
A Ferris wheel with a diameter
of 40 m makes one revolution
every 20 minutes. What is its
average speed in meter/min?
Answers
Answer:
6.3 m/min
Explanation:
Circumference of a circle = 2πr
r = D/2 = 40m/2 = 20m
C = 2π(20m) = 125.7 m
speed = distance/time = (125.7 m) / (20 min) = 6.3 m/min
A truck with a mass of 2.00 × 103 kilograms is traveling at +19.0 meters/second along a road. It hits a stationary sedan with a mass 9.90 × 102 kilograms. If the truck and the sedan stick together after the collision, what is the final velocity of the two together?
Answers
Answer:
This one's easy
The final velocity of the truck and the sedan together is +7.19 m/s. This can be calculated using the law of conservation of momentum: m1v1 + m2v2 = (m1+m2)vf, where m1 and m2 are the masses of the truck and the sedan respectively, v1 is the velocity of the truck, v2 is the velocity of the sedan (which is 0 in this case) and vf is the final velocity of the truck and the sedan together.
What name did marie curie give to the process by which materials give off rays capable of fogging photographic plates?
Answers
The study of radioactivity by Marie Curie marked a significant turning point in the realm of physics and had a significant influence on scientific knowledge. Now let's get into the specifics.
"Radioactivity" is the term Marie Curie coined to describe the phenomenon whereby materials emit radiation that can fog photographic plates. During her uranium investigation in 1896, she made this discovery. This game-changing discovery opened the door for more research into and comprehension of radioactivity, which resulted in important developments in the field of nuclear physics.
Marie Curie's research on radioactivity served as a springboard for additional nuclear physics research and has profound ramifications for other fields of science and medicine. It resulted in improvements in our knowledge of atomic structure, the creation of radiation therapy for the treatment of cancer, and the eventual exploitation of nuclear energy.
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