3a Thermo

Question 1

1 CHU = 1400 ft lbs

Is the amount of energy req’d to raise

Answer 1

1 lb of water by 1 degrees centigrade

Centigrade heat unit

Question 2

0 degrees kelvin

In centigrade ?

Answer 2

-273 degrees

Question 3

1 calorie is equal to

Answer 3

4 joules

Question 4

Centigrade to Fahrenheit

Answer 4

X 1.8 + 32

Question 5

Fahrenheit to centigrade

Answer 5

-32 X 0.55

Question 6

By adding impurities to water

Answer 6

Melting point will decrease and boiling point increase

Question 7

Heat is dedicated as

Answer 7

Energy in transit

Question 8

In a heat pump

Answer 8

The pump operates in both directions

Question 9

What does temp of a body mean?

Answer 9

It’s hotness

Question 10

1 BTU = 778 ft lbs

Energy req’d to raise the temp of

Answer 10

1 lb of water by 1 degrees Fahrenheit

BTU = British thermal unit

Question 11

What does temp of a body mean?

Answer 11

It’s hotness

Question 12

What is 1 BTU / lb in joules per kg?

2326. Joules per kilo

2329 joules per kilo

1 BTU equals?
1058 joules
1055 joules

Answer 12

2326 joules per kilo

1055 joules

Question 13

Complete cycle where the net heat supplied is equal to the work done plus a change in internal enemy is?

Answer 13

First law of thermodynamics