Latent Heats: The melting point of aluminum is 660°C, its latent heat of fusion is 4.00 × 105 J/kg, and its specific heat is 900J/kg ? K. How much heat must be added to 500 g of aluminum originally at 27°C to completely melt it?
A. 485 kJ
B. 395 kJ
C. 273 kJ
D. 147 kJ
E. 14 kJ
Answer: A
You might also like to view...
The dust in the interstellar medium can make distant stars look redder than they really are
a. True b. False Indicate whether the statement is true or false
The movement of a pool ball, after being struck by a cue, is an example of
A) Newton's first law of motion. B) Newton's second law of motion. C) Newton's third law of motion. D) the universal law of gravitation. E) conservation of momentum.
A velocity selector uses a fixed electric field of magnitude E and the magnetic field is varied to select particles of various energies. If a magnetic field of magnitude B is used to select a particle of a certain energy and mass, what magnitude of magnetic field is needed to select a particle of equal mass but twice the energy?
a. 0.50 B b. 1.4 B c. 2.0 B d. 0.71 B e. 1.7 B
Two campers wish to start a fire during the day. One camper is nearsighted and one is farsighted. Whose glasses should be used to focus the Sun's rays onto some paper to start the fire?
1.either camper’s 2.the nearsighted camper’s 3.the farsighted camper’s