1. A freezer has a coefficient of performance of 2.40 and can convert 1.80 kg of water at 25 degree C to ice at -5 degree c in 1 hr.
a. The heat removed per hour is ------------ and
b. The electrical energy consumed per hour is---------
2. Divers are sealed in deep-dive research vessel on the deck of the mother ship and lowered to a depth of 4000 m into the ocean. The density of sea water = 1.00 x 103 kg/m3
a. the force of the water on a 30.5 cm diameter port window is ------------N or --------atm
3. A solid uranium cylinder weighs 91.53 N in air and 86.63 N when submerged in water.
a. The volume of the cylinder is ----------mt^3
b. The density of uranium is---------kg/mt^3
4. On each heartbeat, about 70 cm^3 of blood is forced from a human heart at an average pressure of approx 105 mm Hg.
a. If the heart beats 70 times per minute, the average power output of the heart is ---------- watts