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 __________
Fill in the blank(s) with correct word
40,000 J
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A(n) _______________star is any star that changes its brightness significantly and repeatedly
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The number of different kinds of leptons, including antiparticles as different, is
A) 4. B) 6. C) 8. D) 2. E) 12.
Which of the following statements is true of white dwarfs?
A) Some of them are among the hottest stars known. B) Few of them are positioned in the upper-right corner of the Hertzsprung-Russell (H-R) diagram. C) They have high luminosities. D) They have a very big surface area from which they radiate energy.
Molecular Speeds: If the temperature of an ideal gas is increased from 20°C to 40°C, by what percent does the speed of the molecules increase?
A. 3% B. 30% C. 70% D. 100%