A reversible engine operating between 500 K and 300 K has the same efficiency as a reversible engine operating between 400 K and what lower temperature?
A) 200 K
B) 220 K
C) 240 K
D) 260 K
E) 280 K
C
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Liquid metallic hydrogen is found in the interior(s) of
a. Jupiter. b. Saturn. c. Jupiter and Saturn. d. neither Jupiter nor Saturn.
Matter Waves: A proton that is moving freely has a wavelength of 0.600 pm. (mproton = 1.67 × 10-27 kg, e = 1.60 × 10-19 C, h = 6.626 × 10-34 J ? s)(a) What is its momentum?(b) What is its speed?(c) What potential difference would it have been accelerated through, starting from rest, to reach this speed?
What will be an ideal response?
The idea in fission-bomb design is to
A) form a supercritical mass from one or more subcritical masses. B) bring neutrons and subcritical uranium together. C) both of these D) neither of these
Specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C After the 1 kg block of ice melts, the amount of heat required to raise its temperature to 10 °C is
a. 2,000 J b. 4,000 J c. 20,000 J d. 40,000 J e. 334,000 J