A 0.2-kg model rocket is loaded with 0.75 kg of rocket fuel. After launch, the rocket rises at a constant rate of 4 m/s, but the rocket fuel is dissipated at a rate of 0.15 kg/s. Find the work done in propelling the rocket 16 m above the ground. (Use 9.8 m/s2 for g.)

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

What is the rate of change in a objects position?