How is a magnetic field generated?

What type of energy is released when a firecracker explodes

If a bottlel filled with water 25c and freezes at - 5c the waters tempreture drop what is the sign of the systems q, w,ΔE

Toward which direction does a NW wind blow?

While an airplane is in flight, four forces act on it. Thrust is caused by the airplane's propellers pushing through the surrounding air, pulling the airplane forward. Drag is caused by the air smacking into the plane's surface, pushing it backward.

How many coulombs of positive charge are there in 47.0 gm of plutonium, given its atomic mass is 244 and that each plutonium atom has 96 protons? (enter answer to three significant figures and in the exponent form: Example, 1.38e5)

Because the moon rotates once for each revolution around Earth, Choose one answer. a. you see some phases more than others. b. a different side of the moon faces Earth each day. c. you never see the far side of the moon.

Planet A takes 1 year to go around its star at an average of 1 A. U. distance. Planet B is 4 A. U. from the star. Calculate how long Planet B takes to orbit.

Average mass of a toy car (small, hot wheels) ?

A pwc capsizes. what is the best way to roll the pwc to turn it upright?

Which biome has the most extreme conditions