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How do the jogger's average speed and the magnitude of the average velocity compare?
Two pole-vaulters just clear the bar at the same height. The first lands at a speed of 7.84 m/s, while the second lands at a speed of 8.32 m/s. find the speed at which the second vaulter clears the bar
Consider a system consisting of two long, concentric solenoids. The larger solenoid has current running in counter clockwise fashion. Find the magnetic field strength inbetween the solenoids. positive number if it is up
A ball rolls off a table with an initial velocity of 20/ms. The height of the table is 2 meters to the ground. How long does it take the ball to reach the ground
suppose that the springs have somehow not yet compressed to their maximum amount. How much are the springs compressed.
A steel guitar string 50 cm long has a mass density of 1.5 g/m and the tension is 500 N. Find the frequency of the second harmonic
A stone of weight W has specific gravity 2.51. When the stone is suspended from a scale and submerged in water, what is the scale reading in terms of its weight in air
question a lightning bolt may carry a current of 1.00 x 104 a for a short period of time. what is the resulting
One side of our asteroid is constantly illuminated by the Sun while the other side remains in the dark. Do you expect there to be a temperature difference between the light and dark sides? Explain why or why not. If the two sides are at differ..
Suppose a car's brakes can produce an acceleration of -7 m/s2. what is the minimum distance necessary to stop the car
In 1993 a giant 400-kg yo-yo with a radius of 1.5 m was dropped from a crane at height of 57 m, estimate its linear speed at the end of the fall
A 6.3-kg box is being lifted by means of a light rope that is threaded through a single, light, frictionless pulley that is attached to the ceiling. what is the power delivered by the person pulling on the rope
A train is traveling down a straight track at 29 m/s when the engineer applies the brakes, resulting in an acceleration of 1.0 m/s2 as long as the train is in motion. How far does the train move during a 58-s time interval starting at the instant ..
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