Which of these is true regarding weight but not mass? question 1 options: a. weight is based on density, mass is not. b. weight is proportional to volume, mass is not. c. weight changes based on inertia, mass does not. d. weight changes depending on distance from the earth, mass does not. save

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

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?