Answer:Height = 30 inches
Mass of water / Volume of water x Gravity constant for Earth x Density of Water. This cancels out to give us mass/volume, which is then cancelling mass, giving us the final unit of length/area (in this case inches).
Explanation:
Height = 30 inches.
Units cancelled:
30/30 x 9.8 x 0.9971 = 30/39.97
The final units are in inches!
2. Determine the weight (in pounds) that an ice cube at 32°F will displace when placed in water at 75°F.
Weight of ice cube / Volume of water x Gravity constant for Earth x Density of Ice = Weight displaced by ice cube in pounds
Weight of ice cube / Volume of water x Gravity constant for Earth x Density of Ice = 0.5/75 x 32 x 0.92 = 0.5/22.67
The final units are in pounds!
3. Determine the mass (in grams) of an ice cube at 32°F when placed in water at 75°F (assume no change in volume).
Mass of Ice Cube / Volume of Water x Gravity constant for Earth x Density of Ice = Mass of ice cube in grams
Mass of Ice Cube / Volume of Water x Gravity constant for Earth x Density of Ice = 0.5/75 x 32 x 0.92 = 15/22.67
The final units are in grams!
Answer:
a)
, b)
, c)
, d)
, e) 
Explanation:
a) The coefficient of performance of the reversible refrigeration cycle is:


The temperature of the hot reservoir is:



b) The coefficient of performance is:


c) The temperature of the hot reservoir can be determined with the help of the following relation:






d) The coefficient of performance is:


e) The temperature of the cold reservoir is:



