The total power supplied to a lift motor is 5000w. in a test the motor transfers 12000 kj of energy in 20s to the gravitational potential energy store of the lift. calculate how much energy is supplied by the motor by the current through it in 20s

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

Does anyone have the answers to online physics course plato course physics, semester a v3.0

Acar travels 40m in 8 seconds find the car speed