Question

5.

Conduction best takes place in

Group of answer choices

solids  

fluids

liquids

gases

vacuum

6.

A 300 g block of an unknown metal is heated from 20^o C to 170^o C. This takes 2430 calories of heat. What is the specific heat of this metal?

Group of answer choices

0.11 cal/g ^oC

0.093 cal/g ^oC

0.031cal/g ^oC

0.054 cal/g ^oC

0.22 cal/g ^oC

7.

What is the Fahrenheit temperature scale reading of 15^o C?

Group of answer choices

68^o F

59^o F

112^o F

86^o F

104^o F

8.

The lowest possible temperature is:                                                           

Group of answer choices

0^o C

− 273^o F

− 100^o C

0 K

0^o F

9.

A heat engine discards 750 calories from a supply of 1000 calories. What is the efficiency of this engine?

Group of answer choices

25%

60%

30%

75%

50%

10.

The transfer of heat that does not require material medium is called

Group of answer choices

convection

radiation

phase change

conduction

circulation

Answer 1