Kelly is sledding on a snowy hill in the winter. The energy the sled has as it slides down the hill is a form of

A.

chemical energy.

B.

potential energy.

C.

mechanical energy.

D.

electrical energy.

Which of the following observations demonstrates the differences between speed of light and speed of sound? (Note, they are all true, but which one represents the difference in the speed?)) A.

Look at the advertisement. A poster that reads, "There's more to resistors than resistance. If you're really serious about cost, be serious about quality." with tools. Which persuasive media technique is used in this advertisement

An output gear has 10 teeth and an input gear has 40 teeth. What is the mechanical advantage of his gear combination? Is force or speed multiplied in this example?

An electric fan spinning with an angular speed of 13 rad/s has a kinetic energy of 4.6 j. what is the moment of inertia of the fan?

How would the speed of a planet be different if its orbit were a circle instead of an eclipse?

Which is a disadvantage of using wind as an energy source? Check all that apply. It may be unreliable. It is not naturally occurring. It produces a lot of waste. It requires wires to carry electricity. It generates large amounts of electricity.

One step in the production of hydroelectric power involves

A pot is heated on a stove. The water begins to boil rabidly. Which explains why the water is boiling fast?

A galvanometer can be calibrated to read electric A) current B) Voltage C) either of these D) neither of these

Why do responsible consumers use credit and credit cards?