An object is thrown upwards with a speed of 16 m/s. how long does it take it to reach a height of 7.0 m on the way up?

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.

5400 j of energy are given off when a 50 g of aluminum pan changes temperature. does the temperature of the pan increase or decrease and by how much

A500-watt vacuum cleaner is plugged into a 120-volt outlet and used for 30 minutes. how much current runs through the vacuum? 900,000 amps 60,000 amps 4.2 amps 0.24 amps