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A 2.6-kg object hangs at one end of a rope that is attached to a support on a railroad car. When the car accelerates to the right, the rope makes an angle of 5.0° with the vertical, as shown in the figure below. Find the acceleration of the car.m/s2
In a physics lab experiment for the determination of moment of inertia, a team weighs an object and finds a mass of 3.38 kg. What is the moment of inertia of the object
Air "breaks down" when the electric field strength reaches 3*10^6 N/C, causing a spark. How many electrons must be transferred from one disk to the other to create a spark between the disks
An object is shot at 56 m/s horizontally off the roof of a building which is 55 meters above the ground. How long does it take the object to reach the ground in seconds
With the switch in position A, the capacitor becomes charged. After a long time, the capacitor charge approaches q = C ?. Determine the energy of the capacitor U(t) as a function of time t
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -40?C. By how much does her mass increase
How many kilocalories of heat are produced when the brakes are used to bring a 930 kg car to rest from a speed of 102 km/h.
q1. a customer sits in an amusement park ride in which the compartment is to be pulled downward in the negative
A canoe has a velocity of 0.54 m/s southeast relative to the earth. The canoe is on a river that is flowing 0.58 m/s east relative to the earth. Find the direction of the velocity of the canoe relative to the river
A car moving at 37 m/s approaches a stationary whistle that emits 270 Hz sound. The speed of sound is 347 m/s. What is the frequency of sound heard by the driver of the car.
An object starts from rest at time t = 0.00 s and moves in the +x direction with constant acceleration. compute the acceleration of the object
mary beth uses a torque feeler that consists of a meter stick held at the 0 cm end with a weight danglig from various positions along the stick. how much more torque is exerted when it is hung from the 75 cm mark
After falling from rest from a height of 35 m, a 0.45 kg ball rebounds upward, reaching a height of 25 m. If the contact between ball and ground lasted 1.8 ms, illustrate what average force was exerted on the ball?
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