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An unidentified flying object (UFO) flashes across the night sky. A UFO enthusiast on the top of Pike's Peak determines that the length of the UFO is 121 m along the direction of motion. If the UFO ismoving with a speed of 0.534c, how long is the UFO according to its pilot?
A drum major twirls a 93-cm-long, 440g baton about its center of mass at 150rpm. What is the baton's rotational kinetic energy
A 54.00 kg pole vaulter running at 10 m/s vaults over the bar. Her speed while she is above the bar is 1.0 m/s. Avoid air resistance, in addition to any energy absorbed by the pole, and determine her altitude as she crosses the bar.
a car moves at a constant speed on a strait but hilly road. One section has a crest and dip of the same 500 m diameter curve. what is the greatest speed at which the car can move without leaving the road at the top of the first crest
What is the shortest height a plane mirror must be so that a person who is 1.6 meters tall is able to see his or her whole body? plan a ray diagram to support your answer.
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.20 min, find the total vector displacement
On a frictionless, horizontal air table, puck A (with mass 0.250 ) is moving toward puck B (with mass 0.350 ), Calculate the change in the total kinetic energy of the system that occurs during the collision
A large cruise ship of mass 6.70 107 kg has a speed of 13.0 m/s at some instant. How much work is required to stop it
A resistor with 790? is connected to the plates of a charged capacitor with capacitance 4.26?F, What is the electrical power dissipated in the resistor just after the connection is made
1. provide at least three reasons for believing in the accuracy and inaccuracy of sensory information.2. identify and
A 10 kg crate is pulled up a 30 degree incline with a rope parallel to the incline. The tension in the rope is 100 N. what is the acceleration of the crate up the incline
An ion accelerated through a potential difference of 102 V experiences an increase in kinetic energy of 3.01 × 10?17 J
Each cable has a length of l = 2.70 -{rm m}. What is the tension T in each of the cables? Use 9.80- {rm m/s}^2 for the magnitude of the acceleration as a result of gravity.
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