Which of the following is an almost reversible process?
a. The explosion of hydrogen and oxygen to form water.
b. Heat transfer through thick insulation.
c. The adiabatic free expansion of a gas.
d. A slow isothermal compression of a gas.
e. A slow leakage of gas into an empty chamber through a small hole in a membrane.
D
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Waves on a String: A wave whose wavelength is 0.500 m is traveling down a 500-m long wire whose total mass is 25 kg and is under a tension of 2000 N.(a) What is the speed of the wave on the wire?(b) Find the frequency of this wave.
What will be an ideal response?
For a body emitting blackbody radiation, the total power emitted is proportional to the 4th power of the body's absolute temperature: (T in kelvins) and the wavelength of the emitted EM radiation that has the highest intensity is inversely proportional to the body's absolute temperature according to: ( in meters, T in kelvins) Assume an object is emitting blackbody radiation. A body in a room at
300 K is heated to 3,000 K. The amount of energy radiated each second by the body increases by a factor of a. 10. b. 100. c. 1,000. d. 10,000. e. 100,000.
As Curtiss thought, our Milky Way is now known to be quite similar to the nearby Andromeda Galaxy, M-31
Indicate whether the statement is true or false
Suppose that you measure the position of a chair using a meter stick and you record the distance of the center of the seat from the wall. Which of the following measurements is the most reasonable?
1.1.043 860 564 2 m 2.1.043 860 m 3.1 m 4.1.04 m