Physics, 22.07.2019 07:20 alliemeade1
Aball is dropped from a cliff which is 200 m above the ground below. 1. what is the final velocity of the ball when it hits thee ground below 2. how long does it take for the ball to hit the ground?
Answers: 1
Physics, 22.06.2019 03:30, annikacorrea
Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec
Answers: 1
Physics, 22.06.2019 11:30, genyjoannerubiera
A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?
Answers: 2
Physics, 22.06.2019 12:30, lmolder1329
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
Answers: 1
Aball is dropped from a cliff which is 200 m above the ground below. 1. what is the final velocity o...
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