Physics, 25.01.2021 05:20, englishwiz28

Think of a hydropower dam. How is electrical energy produced from potential and kinetic energy?

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Physics, 21.06.2019 22:50, sarahfsakrani

Aplane takes off from an airport and flies to town a, located d1 = 215 km from the airport in the direction 20.0° north of east. the plane then flies to town b, located d2 = 230 km at 30.0° west of north from town a. use graphical methods to determine the distance and direction from town b to the airport. (enter the distance in km and the direction in degrees south of west.)

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Physics, 22.06.2019 04:50, andrewsaul04

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

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Physics, 22.06.2019 17:00, StupidFatChipmunk

What equation is used to calculate the weight of an object on a plant ?

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Physics, 23.06.2019 03:00, blancademarco1994

A75-hp (shaft output) motor that has an efficiency of 91.0 percent is worn out and is to be replaced by a high-efficiency motor that has an efficiency of 95.4 percent. the motor operates 4368 hours a year at a load factor of 0.75. taking the cost of electricity to be $0.12/kwh, determine the amount of energy and money saved as a result of installing the high-efficiency motor instead of the standard motor. also, determine the simple payback period if the pu