A substance most commonly emits heat energy by the process of
A) conduction.
B) convection.
C) radiation.
D) none of the above
Answer: C
You might also like to view...
The coefficient of linear expansion for brass is 19. × 10-6 K-1. What is its coefficient of volume expansion?
A) 5.7 × 10-5 K-1 B) 8 × 10-18 K-1 C) 57. × 10-5 K-1 D) 3.8 × 10-6 K-1 E) 38. × 10-6 K-1
Scientists were led to postulate the existence of the neutrino in order to
A) maintain the conservation of energy and of momentum in beta decay. B) provide a mechanism for quark production. C) account for alpha decay. D) explain the intense radiation emitted by quasars.
As a monochromatic light ray is transmitted through an air-to-glass boundary, what happens to the wavelength?
a. increases b. decreases c. remains unchanged d. approaches zero value
A solid object is made of two materials, one material having density of 2000 kg/m3 and the other having density of 6000 kg/m3 . If the object contains equal masses of the materials, what is its average density?
a. 3000 kg/m3 c. 5000 kg/m3 b. 3200 kg/m3 d. more information is needed