Your answer is incorrect. an empty swimming pool needs to be filled to the top. the pool is shaped like a cylinder with a diameter of 8 m and a depth of 1.6 m . suppose water is pumped into the pool at a rate of 11 m3 per hour. how many hours will it take to fill the empty pool? use the value 3.14 for π , and round your answer to the nearest hour. do not round any intermediate computations.

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

Select the three ways that the parallel-plate capacitor differs from a car battery.

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?