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A 0.010kg bullet is fired straight up at a falling wooden block that has a mass of 2.0kg. The bullet has a speed of 750m/swhen it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for atime t when the collision with the bullet occurs. As a result of the collision, the block with the bullet in it reverses direction, rises and comes to a momentary halt at the top of the building. Find the time t.
A large wooden turntable in the shape of the flat disk has a radius of 2.00 {rm m} and a total mass of 120 {rm kg}. The turntable is initially rotating at 3 {rm rad}/{rm s} about a vertical axis through its center.
You find an unlabeled box of fine needles, and want to determine how thick they are. A standard ruler won't do the job, What is the diameter of the needle
The temperature of a black body is increased by 10.5 percents. By how many percents did the wavelength of the peak change
Two sinusoidal waves of the same frequency travel in the same direction along a string. what is the amplitude (in cm) of the resultant wave
Each of the sources in the drawing emits a frequency of 4.57 multiplied by 1014 Hz, and the speed v is 2.50 106 m/s. Calculate the observed frequency fo in situation A. fo =? Unit
When a car is traveling at 23 m/s on level ground, the stopping distance is found to be 20 m. What is the stopping distance now, as measured along the incline
A large truck collides head-on with a small car. The car is severely damaged as a result of the collision. According to Newton's third law, how do the forces acting between the truck and car compare during the collision?
You are 3.20 m from a plane mirror, holding a camera, and you want to take a photograph of your image in the mirror. find To what distance should the camera be focused
Freight trains can produce only relatively small acceleration and decelerations. What is the final velocity of a freight train that accelerates at a rate of 0.0700 m/s2 for 8.00 min, starting with an initial velocity of 5.00 m/s
In coming to a stop, a car leaves skid marks 77m long on the highway. Assuming a deceleration of 8m/s2, estimate the speed of the car just before braking.
If that ball had been released from the same height, but this time above the surface of the moon, how long would it have taken for the ball to hit the ground
A proton is moving parallel to a uniform electric field. The electric field accelerates the proton and increases its linear momentum to 3.00 10-23 kg·m/s from 1.30 10-23 kg·m/s in a time of 6.80 10-6 s. What is the magnitude of the electric field?
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