Answer Happy

1. If you accidently touch a hot dish from the oven and burn your fingers the reason heat was transferred to your fingers from the sheet is A. radiation. B. convection. 0 C. conduction. D. vaporization. O E. evaporation.

1. By what factor does the rate of heat transfer by conduction change when all spatial dimensions are doubled? A. 2 O B. 4 O a C. 1/2 o D. 1/4 O E. 1

= 1. The ratio of the heat radiated by a body at the temperature T1 = 20°C compared to when the body is at the temperature T2 = 40°C is A. 0.0625 B. 0.25 O C. 0.77 D. 1.29