The energy obtained by an object when it gains or loses electrons is what?

If her racket pushed on the ball for a distance of 0.13 m, what was the average acceleration of the ball during her serve?

A car radio draws 0.18 A of current in the autos 12-V electrical system. (a) How much electric power does the radio use? (b) What is the effective resistance of the radio?

3. Why can't most therapists and counsellors prescribe drugs? Wouldn't that be a good thing?

A scientist performs an experiment on an unknown element. She finds that the element forms an ionic bond with beryllium (Be) but not with lithium (Li). She concludes that the unknown element must belong in group 2 of the periodic table.

Which of the following transport mechanisms utilizes energy? a. diffusion b. osmosis c. facilitated diffusion d. endocytosis go to previous question. go to next question. review answer selection

Which statement is true of a concave lens?

Calculate the power rating of a home appliance (in kilowatts) that uses 8 amps of current when plugged into a 120-volt outlet.

If one newton of force accelerates a block at 1m/s^2. predict what the acceleration would be if we applied twice the force to a very light container with 4 blocks in it

What is the difference between an ordinary piece of iron and iron magnet?

The cooled lava pools on the surface of a crater are called what? 1. Craters 2. Terrae 3. Maria 4. Reoglith