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An innovative power cycle is being designed to operate between heat reservoirs at 150 C and 55 C. What is most nearly its maximum theoretical thermal efficiency?
Obtain the wavelength in vacuum for blue light, whose frequency is 6.253 x 1014 Hz. Express your answer in nanometers (1 nm = 10?9 m)
a collimated gamma ray beam consists of equal numbers of 0.1 mev and 1.0 mev photons. if the beam enters a 5 cm thick
Two in-phase loudspeakers are some distance apart. They emit sound with a frequency of 1 kHz. What beat frequency do you observe
a 5.92 box sits at rest at the bottom of a ramp that is 8.06 long and that is inclined at 35.0 above the horizontal.
1. a 10.0 cm radius piston compresses a gas isothermally from a height of 15.0 cm to 2.50 cm at a constant pressure of
A model rocket blasts off and moves upward with an acceleration of 11m/s^2 until it reaches a height of 28m, What is the maximum height attained by the rocket
A box, initially at rest on the ground, is lifted straight upin the air by a rope, moving straight up at constant speed. When it's gotten pretty high off the ground, the rope is released,and the box falls back to the ground. Sketch a graph of the ..
A catcher catches a 145 baseball traveling horizontally at 32.0. what average force did the ball exert on the catcher
A 67.6 kg person jumps from rest off a 2.91 m-high tower straight down into the water. Neglect air resistance during the descent. Determine the magnitude of the average force
An old-fashioned single-play vinyl record rotates on a turntable at 45.0 rpm. Determine what the angular velocity
A generating station is producing 2.00 106 W of power that is to be sent to a small town located 8.0 km away. Find the power used to heat the wires if the power is transmitted at 1300 V
A circuit contains a 4.50-nF capacitor and a 4.00-mH inductor. By what factor does this angular frequency change if a 1.00-kilo ohms resistor is connected in series with the capacitor and the inductor
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