You did an experiment to find out how the mass of a toy car affected its speed down a ramp. An example or examples of
controlled variables in the experiment could include the:

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above