What does an electromagnet do?

Name five (5) things.

A model hydroelectric power station produces just enough electric power to light a 6.0 W lamp. The model is found to be 80% efficient at converting the potential energy store of the water into electrical work.

Hint: This problem requires a train of logic. (1) Analyze force diagram, (2) use Newton's Laws, and (3) solve the equations of motion. A block starts from rest at a height of 3.9 m on a fixed inclined plane. The acceleration of gravity is 9.8 m/s 2.

Which of the following materials is an insulator against electric current? A. A silver spoon B. Aluminum foil C. A copper penny D. A glass pane

What type of bond does a water molecule form? Explain why it forms this type of bond.

Consider a nuclear power plant, its transmission lines, and everything it provides energy to as a closed system. Which of the following is then true for the system?

You push a 5-kg box across the floor with a force of 25N. How far do you have to push the box to do 63J of work?

The amount of gravity between 1kg of lead and Earth is ___ the amount of gravity between 1kg of marshmallows and Earth. a. greater than b. less than c. the same as d. none of the above

What is the best way to dry a thermometer servsafe?

What is a sphygmomanometer?

What part of a circuit has the main job of conducting the electricity?