Physics, 10.09.2019 03:30, lauryngrace37
Atennis ball is dropped from a height of 10.0 m. it rebounds off the floor and comes up to a height of only 4.00 m on its first rebound. (ignore the small amount of time the ball is in contact with the floor.) (a) determine the ball’s speed just before it hits the floor on the way down. (b) determine the ball’s speed as it leaves the floor on its way up to its first rebound height. (c) how long is the ball in the air from the time it is dropped until the time it reaches its maximum height on the first rebound?
Answers: 2
Physics, 22.06.2019 06:20, lolweapon
Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.
Answers: 1
Physics, 22.06.2019 09:50, ggcampos
Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c. the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors
Answers: 1
Physics, 22.06.2019 21:30, missy9225
A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.
Answers: 2
Atennis ball is dropped from a height of 10.0 m. it rebounds off the floor and comes up to a height...
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