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Suppose a person riding on top of a freight car shines a searchlight beam in the direction in which the train is traveling. Compare the speed of the light beam relative to the ground when:
a. The train is at rest.
b. The train is moving.
Please show your work and write (preferably type) legibly.
an undiscovered planet many light-years from earth has one moon which has a nearly circular periodic orbit. if the
A wire is 3.500 m long. After applying a force to one end of the wire, it is now 3.504 m long. Calculate the tensile strain in the wire
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A projectile launched at an angle of theta to the horizontal reaches maximum height h. Find an expression for its horizontal range in terms of h, g, and theta as needed
A 15.0-kg block rests on a horizontal table and is attached to one end of a mass less, horizontal spring. By pulling horizontally on the other end of the spring, someone reasons the block to accelerate uniformly and reach a speed of 5.00 m/s in 0.390..
To look closely at a small object, such as an insect or a crystal, you bring it close to your eye, making the subtended angle and the retinal image as large.
How much heat must you add to a 10 kg bar of steel to increase its temperature 600 degrees Celsius
A tin can is filled with water to a depth of 38cm . A hole 20cm above the bottom of the can produces a stream of water that is directed at an angle of 30? above the horizontal
What is the normal force that the incline exerts on the block. find the acceleration of the block.
A bullet moving at 244 m/s strikes a tree and penetrates a distance of 8.34 mm before stopping. What was the average acceleration of the bullet as it slowed
An ice cream cone is filled with melted vanilla ice cream of density 1.21g/cm3 The cone is 10.1cm long and has a diameter of 6.1 cm at the larger top end. Find the gauge pressure at the bottom of the cone
two metal balls are hung from strings. the first ball 0.09 kg is pulled to the side and released so that it strikes the
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