A copper wire of length 25.0 cm is in a magnetic field of 0.36 T. If it has a mass of 11.0 g, what is the minimum current through the wire that would cause a magnetic force equal to its weight? 12 A 0.48 A 1.2 A 0.75 A 3.3 A

8. A stone is dropped from a 1000 foot cliff. How long does it take to hit the ground? (Use acceleration a(t) = -32 feet per second squared).

You start out by driving 60 miles south in 4 hours and 18 minutes, and then you stop and park for a while. Finally you drive another 45 miles north in 2 hours and 33 minutes. The average velocity for your entire trip was 1.75 miles per hour to the south. How much time did you spend parked?     0 hours 51 minutes     8 hours 33 minutes     1 hours 42 minutes     3 hours 25 minutes

Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that one such plate has an average speed of 3.21 cm/year. Hint a. What distance does it move in 1.71 s at this speed in nanometers? It moves a distance of nm. b. What is its speed in kilometers per million years? Its speed is km/million years.

Do fast, just answer.