Properties Of Mass And Theory

Question 1

Energy

Answer 1

Ability to effect change in matter

Question 2

Mass

Answer 2

Quantity of a material

Question 3

Weight

Answer 3

Gravitational force exerted on an object. Quantity inc, Gravitational force inc.

Question 4

Density

Answer 4

Amount of a substance in a given amount of space (lb/ft3)

Question 5

Specific volume

Answer 5

Volume of specific amount of gas under standard conditions
The inverse of density. Higher the specific volume, lower the density.

Question 6

Specific gravity

Answer 6

Ratio of a volume of liquid or solid compared to the mass of an equal volume of water. Specific gravity of water = 1

Question 7

Relative density

Answer 7

The ratio of the mass of a volume of gas compared to an equal amount of hydrogen

Question 8

Potential energy

Answer 8

Stored energy. Eg, electrical energy in a battery.

Question 9

Kinetic energy

Answer 9

Energy doing work. Ex, a battery lighting a buld

Question 10

Specific volume of air

Answer 10

13.454ft3

Question 11

Acceleration constant

Answer 11

32.2ft/s2

Question 12

1 hp = ___foot-power?

Answer 12

550 foot power/second

Question 13

Calculate power

Answer 13

Work/time
P= ft-lb/s

Question 14

Convert power to hp

Answer 14

P = ft-lb/s x 1hp/550ft-lb/s

Question 15

Our air is made up of:

Answer 15

78% nitrogen
21% oxygen
1% other

Question 16

Bar

Answer 16

Unit of pressure equal to 14.5 psia, approx 1 atmosphere

Question 17

Metering devices fall under which 2 categories?

Answer 17

Fixed and modulating