Heat is added to a 2.0 kg piece of ice at a rate of 793.0 kW. How long will it take for the ice to melt if it was initially at 0.00°C? (The latent heat of fusion for water is 334 kJ/kg and its latent heat of vaporization is 2260 kJ/kg.)
A) 0.84 s
B) 530,000 s
C) 4.7 s
D) 670 s
A
You might also like to view...
The force that accelerates the orange and apple system featured in your textbook is actually supplied by the
A) apple. B) orange. C) floor.
On what basis did Herschel think he had found a comet?
A) The object appeared as a small greenish disk in his telescope. B) It appeared to be moving slightly night by night. C) No star appeared in that position on his charts. D) It was not a point of light, like a star should appear. E) All of the above are correct.
A typical source of infrared radiation is
A) magnetized particles vibrating in iron and certain other metals. B) charged particles moving within the nucleus. C) electrons moving along a metal antenna. D) thermal vibrations of molecules. E) electrons orbiting the nucleus in atoms.
Neglecting friction, a ball rolling along a horizontal plane will
1) accelerate indefinitely. 2) roll until the force used to roll it was used up. 3) roll indefinitely at a constant speed. This illustrates 4) the basic principle that a body requires a push or pull to keep it moving. 5) inertia. 6) the law of net force.