Physics, 07.03.2021 20:00 shymitch32
A football (450 g) falls vertically from rest onto the ground from a height of 5.0 m. If the force that compresses the ball when it hits the ground is (100 N). What is the amount of compression of the ball? Draw explanatory diagram
Answers: 2
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An object has a weight of 500 on earth what is the mass of this object
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Physics, 22.06.2019 18:00
Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
Answers: 3
Physics, 23.06.2019 04:31
A90db sound wave strikes an eardrum whose area is 5.0×10^-5m^2. how much energy is absorbed by the eardrum per second
Answers: 1
Physics, 23.06.2019 05:00
Two cans on a sunny window one black and the other white construct and explanation of the effect of sun will have on both cans over a two hour period?
Answers: 1
A football (450 g) falls vertically from rest onto the ground from a height of 5.0 m. If the force t...
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