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Five thousand joules of heat is put into a Carnot engine whose hot and cold reservoirs have temperatures of 480 and 320 K, correspondingly. How much heat is converted into work?
An Atwood machine consists of two masses, = 7.1 and = 8.7 , linked by a cord that passes over a pulley free to rotate about a fixed axis. The pulley is a solid cylinder of radius = 0.40 and mass 0.70 .Determine the magnitude of the acceleration of..
dimensional analysis. velocity v acceleration a time t force f mass m gravity g displacement y.a. is this correct?
A 70 kg teen is riding a popular amusement park ride in which a large cylindrical chamber of diameter 4 meters, is spun along a vertical axis. what torque must have been applied to get it going
A roller coaster car (mass = 988 kg including passengers) is about to roll down a track. At what speed does the car reach the top of the loop
A helicopter lifts a 81 kg astronaut 17 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. How much work is done on the astronaut by the force from the helicopter?
A high-speed lifting mechanism supports a 745-kg object with a steel cable that is 31.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
A vertical ideal spring is mounted on the floor and has a springconstant of 170 N/m. A 0.70-kg block is placed on the spring in twodifferent ways.
A top fuel drag racer with a mass of 600.0kg completes a quarter-mile (402 m) drag race in a time of4.2 s starting from rest. The car's finalspeed is 116 m/s. What is the engine'saverage power output in kW? Neglect friction and airresistance.
The Large Hadron Collider, or LHC, to be completed later this year, accelerates protons around a nearly circular track of circumference 26.66 km to a momentum of up to 3.74e-15 kg m/s, For the same magnetic field as in part (a), what is the momentu..
A transformer is to be used to provide power for a computer disk drive that needs 5.8 V (rms) instead of the 120 V (rms) from the wall outlet. Find the number of turns in the secondary
A high speed train is traveling at a constant 150 m/s ( about300mph) on a straight, horizontal track across the south pole. In What directionis the plumb line on the train deflected
Problem on the velocity of boat
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