Physics, 05.12.2019 05:31 reearamrup27
Aball is thrown upwards from the edge of a cliff. the horizontal velocity and vertical velocity are both 20m/s the distance from the ball to the bottom of the cliff is 100m/s. how high does the ball go? how long does it take the ball to hit the ground, from the time it leaves the child's hand?
Answers: 2
Physics, 22.06.2019 12:50
Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.
Answers: 2
Physics, 22.06.2019 15:20
Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.
Answers: 3
Physics, 22.06.2019 23:00
During the past 150 years in the united states, how did energy consumption compare to population growth
Answers: 1
Aball is thrown upwards from the edge of a cliff. the horizontal velocity and vertical velocity are...
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