What is the power in watts of the heat engine
There are 200 students riding bikes each producing 110W of heat out put which is used for a heat engine which has an efficiency of 44.1% runing between 30c and -5c. what is the power in watts the heat engine.
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Suppose a Carnot refrigerator is used to cool the interior of a food storage locker from room temperature to 5°C. As the temperature of the locker drops, the performance coefficient of the refrigerator.
A billiard ball of mas 0.3kg moves with a speed of 5m/s and collides elastically with a ball of mass 0.2kg moving in the opposite direction with a speed of 3m/s. Show that because momentum is conserved in the rest frame, it is also conserved in a
A 32.0 kg child slides down a long slide in a playground. She starts from rest at a height h1 of 20.00 m. When she is partway down the slide, at a height h2 of 8.00 m, she is moving at a speed of 7.00 m/s. Calculate the mechanical energy lost due
A 115 granite cube slides down a 40 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 245 steel cube at rest. How high above the table should the granite cube be released to give the steel cube a speed
A flower pot falls from the roof and passes in front of a window of height h as it falls to the ground to smash to pieces. If the flower pot takes a time T to pass from top to bottom in front of the window, find the (as-yet unknown) height H from
A small leak develops in her propulsion system and 7.79 g of gas are ejected each second into space with a speed of 797 m/s. She notices the leak 5.91 s after it starts. How much will the gas leak have caused her to move from her original location
What is the work done by the field on the electron?
Point A is located 0.75 m away from a charge of -3.90 x 10-9 C. Point B is located 0.35 m away from the charge. What is the electric potential difference VB - VA between these two points?
In the first-order spectrum, maxima for two different wavelengths are separated on the screen by 2.96 mm. What is the difference between these wavelengths? Express your answer in meters.
(a) Write an expression for U as a function of x, with U in joules and x in meters. (b) What is the maximum positive potential energy?
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