A trunk is dragged 3 m across an attic floor by a force of 2 N. The work done on the trunk is joules. Assuming the floor to be level, the gain in potential energy is joules.

What stores energy for a quick release in a cell?

During football practice, a football is kicked with a speed of 22 m/s at an angle of 60.0° relative to the positive x direction.

If you observe people moving by you at very high speed, you will say that their time runs slowly, their lengths are contracted in the direction of motion, and their masses are increased from their rest masses. What will they say about you?

How are the electric field lines around a positive charge affected when a second positive charge is near it?

How does the electric force between two charged particles change if the distance between them is decreased by a factor of 3?

Which best states the author's argument in catching sun rays? no power source is clean, free, and renewable. it costs too much to use solar energy for power. the use of solar energy can cause blackouts in big cities.

A possible means of space flight is to place a perfectly reflectingaluminized sheet into orbit around the Earth and then use the lightfrom the Sun to push this "solar sail." Suppose a sail of area5.

An electric circuit consists of a variable resistor connected to a source of constant potential difference. If the resistance of the resistor is doubled, then

What would happen if an electron was added to an atom

Is a stick living, non living or Dead?