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You have gone up to the top of the Empire State Building and start throwing pennies down to the street level (you heard something about this on Mythbusters once). As the police drag you away, you do some quick math in your head. If you had thrown the pennies down from the observation deck 321m above street level at an initial velocity of 1.99m/s, determine their speed as they reach the ground. (79.4m/s)
A flat bi-metallic strip consists of alluminium riveted to a strip of iron. When heated, the strip will bend. Which metal will be on the outside of the curve? Why?
The mass of a star is 1.050 x 1031 kilogram and it performs one rotation in 34.70 days. Determine its new period if the diameter suddenly shrinks to 0.670 times its present size
A pendulum swings in a lab room with a period of two seconds. You place that same pendulum on the top of a vertical pole and it swings with a period of 2.2 seconds. How high is the pole?
In a hydraulic lift, the maximum gauge pressure is 14.3 atm. If the diameter of the output line is 23.7 cm, what is the heaviest vehicle that can be lifted
What is the frequency of the photon that could produce this result?
You are driving at night on a highway at a speed of 18.2m/s. All of a sudden you see a deer in the road 38 m ahead. what reaction time is required to avoid hitting the deer
A solid, uniform disk of radius 0.250 m and mass 61.6 kg rolls down a ramp of length 4.60 m that makes an angle of 16° with the horizontal. Find the speed of the disk's center of mass when it reaches the bottom of the ramp
block 1 of mass m1 slides from rest along a frictionless ramp from height h = 3.2 m and then collides with stationary block 2, What is the value of distance d if the collision is elastic
A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle. What vertical height does the puck reach above its starting point
What is the charge of a particle of mass 2 grams for locks in the laboratory? When calculated in an electric field directed downward 500 N/c of intensity
The starship Enterprise speeds by you at a speed of 0.960c. It is measure in your frame to be 100 m long. What will be it's length at rest
steel train rails are laid in 12m long segments placed end to end. the rails are laid on a winter day when their
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