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Q. A 35 g bullet moving at 475 m/s strikes a 3 kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 250 m/s. How fast is the bag moving while the bullet exits?
Q. One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26, starting from rest. What is the acceleration because of gravity on that planet? Express your answer in m/s^2.
A flask containing 800 g. of water is heated. If the temperature of the water increases from 27 degrees Celsius to 88 degrees Celsius, how much heat (in joules) did the water absorb.
Cowboy Joe wishes to shoot his assailant by ricocheting a bullet off the mirrored metal plate. To do so, should he simply aim at the mirrored image of his assailant.
In effect, the first circular dark fringe in the diffraction pattern defines the size of the central bright spot on the moon. find the diameter (not the radius) of the central bright spot on the moon.
A runner moving at a constant speed of 11.7 m/s rounds a curve of radius 4.10 m. calculate the acceleration of the runner. (State the magnitude of this acceleration.)
A bicycle wheel is rotating at 45 when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.42.
what is the bullets time in the air. The heat capacity of ice is 2.09 and that of steam is 2.01.
A 20.00 kg wood ball hangs from the 1.10 long wires. The maximum tension the wire can withstand without breaking is 600 N. A 0.710 kg projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectil..
what was the initial speed given to the rock. A light plane is headed due south with the speed of 154 km/h relative to still air. After 1.06 hour, the pilot notices that they have covered only 127km and their direction is not south but southeast (4..
A speeding motorist traveling 100km/h passes a stationary police officer. The officer immediately begins pursuit at a constant acceleration of 12km/h/s (note the mixed units).
A source emits sound uniformly in all directions. A radial line is drawn from this source. On this line, determine the radial positions of two points, 0.786m apart, such that intensity level at one point is 1.72 dB greater than that at the other.
What is the minimum speed you must give the air at the top. find its final kinetic energy.
It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed should such a cylinder have so that the centripetal acceleration at its surface equals the free-fall ..
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