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 The 1 kg block of ice melts into water. The amount of heat absorbed by the ice as it melts is

a. 2,000 J.
b. 4,000 J.
c. 20,000 J.
d. 40,000 J.
e. 334,000 J.


e

Physics & Space Science

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Duff states that equal masses of all substances have equal changes in internal energy when they have equal changes in temperature. Javan states that the change in internal energy is equal to a constant times the change in temperature for every ?T, no matter how large or how small ?T is, but that the constant is different for different substances. Which one, if either, is correct?

A. Neither, because the specific heat depends on the substance and may vary with temperature. B. Neither, because a change of state may involve release or absorption of latent heat. C. Neither because a substance may do work during a temperature change. D. All of the statements above are correct. E. Only statements (a) and (b) are correct.

Physics & Space Science

When we say that an electromagnetic field is "quantized," we mean that it

A) is allowed to have only certain particular values of total energy. B) it fills up a region of space. C) it is really made of particles known as electrons. D) it is really made of particles known as photons. E) it vibrates at one particular frequency.

Physics & Space Science

Plane mirrors produce images which

A) are always smaller than the actual object. B) are always larger than the actual object. C) are always the same size as the actual object. D) could be smaller or the same size as the actual object, depending on the placement of the object. E) could be larger or the same size as the actual object, depending on the placement of the object.

Physics & Space Science

The person who first explained the photoelectric effect was __________

Fill in the blank(s) with correct word

Physics & Space Science