The variation of electric field due to a uniformly distributed charge sphere of radius a = 2.5 cm is given below. Find the magnitude of electric field when A. r= 1.5 cm B. r = 3.5 cm C. r = 2.5 cm Gaussian sphere k.Q Gaussian sphere

Q: An extreme skier, starting from rest, coasts down a mountain slope that makes an angle of 25.0° with…

A: Angle between mountain slope and horizontal: θ=25° Coefficient of kinetic friction: μk=0.2 Distance…

Q: A car starts from rest and reaches a velocity of 40 m/s in 10 s, what will its velocity be 5 s…

A:

Q: The brakes of a car provide an acceleration of – 5 m/s2. How long will it take for a car travelling…

A: It will take 4 sec to stop the car.

Q: A car is moving at uniform acceleration. Its velocity

A: Acceleration- The rate of change of velocity of an object with respect to time is called its…

Q: A baseball is thrown vertically upward. Neglecting air resistance what is the velocity of the ball…

A: inityially the base ball is thrown vertically upward.There is no air resistance

Q: Have you kept in mind the person accelerates at the start.

A: In the attached graph , we can see that the person is accelerating for the first 7 sec.

Q: Would an object dropped three times from the same height would hit the ground at the same time?

A: Since, for a freely falling body which is dropped from height(h) and takes time(t) to reach the…

Q: What was its velocity when it was fired?

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Q: 5.0 4.0 3.0 2.0 1.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 Time for 100 km trip (h)

A: From the graph of time-speed given in the question, for each value on horizontal speed axis there…

Q: A wheelchair moves upward on a 7 degree ramp at a speed of 2 m/s what is the horizontal velocity?

A:

Q: A ball dropped from the roof of a building 94 m high will hit the ground with a velocity of _____…

A:

Q: With what velocity a ball must be thrown vertically to reach height 20 m

A: v=Final velocityu=Initial velocitya=g=Acceleration due to gravtiy=9.81 m/s2s=Displacement=20 m

Q: At 3 s the position was 3 meters. At 4 s the position as 5 meters. What is the average velocity?

A:

Q: Which scenario is an example of projectile motion? Rolling a ball across the floor Driving a car An…

A: Required: The example of the projectile motion

Q: What is the velocity of 2 x 4 m/s

A: Velocity is defined as the time rate change of displacement with respect to time.

Q: 15. A rock is dropped from a high tower. Assuming negligible air resistance, which of the following…

A: A rock is dropped from a high tower. Assuming negligible air resistance, which of the following…

Q: Considering the figure attached, which instance has the highest centripetal acceleration?

A: We know that centripetal acceleration = v2r, where v is velocity and r is radius. For A =…

Q: A ball thrown horizontally from the top of a building hits the ground in 0.4 s. If it had been…

A: Given case 1Ball hits the ground in ,t=0.4 s (Time of flight)

Q: The velocity of a baseball 2.00 s after it is thrown vertically upward with a speed of 32.1 m/s is…

A: The given data are: t=2 su=32.1 m/sa=-g=-9.8 m/s2 Here, t is the time, u is the initial speed, and a…

Q: A ball is dropped from the top of a 65-meter tall building. How fast will the velocity be when it…

A: Given data:  Ball is dropped from the top Height of building (h) = 65 m Required: Velocity of the…

Q: A stone is dropped with an initial velocity of 80ft/s.  How fast is it moving 1.5 seconds? If the…

A: Given The initial velocity of the stone is u=80 ft/s. The time travel by the stone is t=1.5 s. The…

Q: An object is dropped from the top of the Burj Dubai which is 830 meters high and name as the tallest…

A:

Q: what is the acceleration of an object thrown vertically down with a speed of 10 m/s

A: Any object thrown vertically downwards is subjected to the force of gravity. Any object moving under…

Q: Malak is ice-skating at the Lloyd Center. What is her final velocity if she accelerates at a rate of…

A: Given : acceleration a = 11.5 m/sec2   time t = 2.5 second  Find :  velocity =?

Q: acceleration of the crate in m/s?

A: Given data:   The mass of crate is: M = 2.49 kg The force applied at an angle is: θ = 27.9o The…

Q: If a rocket is shot and lands 200m away. how long was it in the air and if the initial velocity was…

A: Given data The horizontal range of the rocket is given as R = 200 m. The initial velocity of the…

Q: How far does he run? 96 a 24 m 72 m 96 m

A:

Q: How far away was a lightning strike if thunder is heard 3.86 seconds after seeing the flash? Assume…

A: In a lightning strike, thunder and flash occur simultaneously, but the thunder is heard a few…

Q: A car hits a wall at 45 mph.  That is equivalent to falling from what height and hitting the ground

A: Given : vi = 45 mph = 20.117 m/s vf = 0 m/s

Q: A Ball rolls down an inclined plane with a 20-degree angle starting from rest to a height of…

A:

Q: An airplane reaches a velocity of 80 m/s when it takes off. If the runway is 1 km in length, what…

A: Acceleration can be found by using equation of motion .

Q: A car travelling at 6 m/s acceleration uniformly the car travels 240 meters in 30 seconds

A: Given data :      Initial velocity  =  u     Distance covered  =  s        Time  =  t        To find…

Q: A car travelling at 4 m/s acceleration uniformly the car travels 150 meters in 26 seconds

A: Write the given data. vi=4 m/ss=150 mt=26 s   In this problem, we have to calculate the acceleration…

Q: The average speed of a car

A:

Q: If you were to drop a large log over the edge of the Grand Canyon and it took 3.21 seconds to hit…

A: we use the formula v=u+gt

Q: which of the following is a vector quantity?   speed time  displacement  distance

A: Speed is a scalar quantity, as speed is the rate of change in the distance travelled by the object.

Q: A bullet shot straight up returns to its starting point in 10 s. Ignoring air resistance, what was…

A: Given data: Time taken to return staring point (t) = 10 s Vertical displacement (Δy) = 0 m Required:…

Q: A ball was dropped from the top of the building. If the ball was from a height of 144 meters from…

A: Given value--- initial speed = 0 m/s. height = 3 seconds.  time = 3 sec. We have to find--- speed…

Q: The speed calculated from the distance traveled during an entire trip and the elapsed time is a(an)…

A: given:- The speed calculated from the distance traveled during an entire trip and the elapsed time…

Q: An object starts from rest and accelerates uniformly. If it moves 3 m during the first second, then,…

A: