a washing machine uses 750 watts of power and costs $0.15 per kilowatt-hour. How much does it cost to run a washing machine for two hours? Round your answer to the nearest cent.

A rock rolls from the top of the hill to the bottom. The total energy of the rock at top isn't the same as the sum of its energy at the bottom which statement best explains this situation

At the top of the hill, the ball has 100 J of potential energy. Explain what happens to Mechanical Energy, Kinetic Energy and Potential Energy as the ball rolls down and reaches the bottom.

A common technique used to measure the force constant k of a spring is the following: Hang the spring vertically, then allow a mass m to stretch it a distance d from the equilibrium position under the action of the "load" m g.

Two liquids are mixed and bubbles form. Is this a chemical or physical change? Explain.

When the driver touches A Car steering wheel on a hot day heat is transferred to the driver's Hands by

The magnitudes of the vertical and horizontal components of a vector are 11 and 17 centimeters respectively. Find the magnitude of the vector and the angle from the horizontal axis.

A rectangular coil with sides 0.10 m by 0.25 m has 500 turns of wire. It is rotated about its long axis in a magnetic field of 0.58 T directed perpendicular to the rotation axis.

Stars set about how many minutes earlier each day? A. 8 B. 6 C. 4 D. 2

Whose atomic theory explains how atoms emit and absorb light

Closed clusters are groups of closely grouped stars that are located along the spiral disk of a galaxy. a. True b. False