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The spaceship Enterprise 1 is moving directly away from earth at a velocity that an earth-based observer measures to be +0.62c. A sister ship, Enterprise 2, is ahead of Enterprise 1 and is also moving directly away from earth along the same line. The veolcity of Enterprise 2 relative to Enterprise 1 is +0.32c. What is the velocity of Enterprise 2, (in terms of c) as measured by the earth-based observer?
The thrust produced by a single jet engine, m=7300kg, creates a force F=73000N. It takes the jet a distance of d=0.84km to take off. What is the take-off speed of the jet
The flywheel of a motor has a mass of 300 kg and a moment of inertia of 580 kg*m^2 The motor develops a constant torque of 2000 N*m and the flywheel starts from rest. How much work is done by the motor during the first 4.00 revolutions
A puck of mass m = 1.40 kg slides in a circle of radius r = 20.0 cm on a frictionless table while attached to a hanging cylinder of mass M = 2.90 kg by a cord through a hole in the table
An LC circuit is built with a 50mH inductor and an 8.0pF capacitor, The capacitor voltage has its maximum value of 40V at t=0s, What is the inductor current at that time
Three identical uniform meter sticks are placed on the floor. The first stick lies along the y axis from y = 0.320 m to y = 1.32 m. How many revolutions does the drill bit make as it comes up to speed
A rope can withstand 1.0 x 10^3 N of tension. If the rope is being used to pull a 10.0-kg package across a c=frictionless surface, what is the greatest acceleration that will not break the rope
To test the working of a refrigerator you put a container having two liters of water (=2kg) at 50C in its freezer. How much heat has the refrigerator extracted from the water
A clock has a second hand whose tip rubs against the inside of the glass cover. what is the minimum torque that must be applied to the second hand
One mole of neon, a monatomic gas, starts out at conditions of standard temperature and pressure. find the heat added to the gas
Water flowing out of a horizontal pipe emerges through a nozzle. The radius of the pipe is 2.5 cm, and the radius of the nozzle is 0.46 cm. determine the absolute pressure of the water in the pipe
A 1200 kg car carrying four 77 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes the car to bounce on its spring suspension. By how much does the car body rise on its suspension owing to this decrease i..
A 12.0-V battery produces 205mA when it's across a 47.5? load, Find the potential difference across the battery's terminals
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