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Two guns, A and B, located at x(A) = 0 and x(B) = 1.5 km , fire at an approaching rocket. Gun A fires at t = 0 ; gun B fires at t = 1.8 microsecs . The detectors on the rocket record the flashes from both guns as simultaneous events. Determine the x component of the rocket's velocity in units of m/s.
If the total momentum of a system is a constant, then we say that the total momentum is conserved. A consequence of Newton’s laws of physics is that the total momentum of a system is conserved whenever the net external force on the system is zero.
A boy uses this string to whirl a 10-kg stone in a horizontal circle of radius 10 m. The boy continuously increases the speed of the stone. At approximately illustrate what speed will the string break?
The pressure in an automobile tire is usually quoted (in the United States) in pounds per square inch (lb/in2), What is the value of the gauge pressure in Pascals
You access the roof of a building and throw a ball to the ground with an initial velocity of 12.0 m/s at an angle of 25.0° below the horizontal. At what time does the ball hit the ground
A simple pendulum with mass m = 1.5 kg and length L = 2.41 m hangs from the ceiling, What is the magnitude of the radial acceleration as the pendulum passes through the equilibrium point
A child sitting at the edge of a swimming pool sees a coin resting on the bottom of the pool. How deep is the pool at the location of the coin
A high diver of mass 65.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. what average upward force did the water exert on her
The peak current through an inductor is 11mA. What is the current if the emf frequency is doubled
An ideal massless spring is hanging vertically. When a 0.45-kg mass is attached to the spring, What is the frequency of the resulting oscillation
A research submarine has a 20-cm-diameter window that is 8.0cm thick. What is the submarine's maximum safe depth in salt water
A fireman, 53.4 m away from a burning building, directs a stream jet of water from a ground level fire hose at an angle of 30 above the horizontal. at what height will the stream of water strike the building
Determined to test the law of gravity for himself, a student walks off a skyscraper 180 m high, stopwatch in hand, and starts his free fall (zero initial velocity).
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