Why does electrical current always flow from areas of negative charge to areas of positive charge?

How does a steam engine do work? (a) steam enters a cylinder and pushes a piston. (b) steam expands and spins an axle. (c) steam turns a turbine. (d) steam causes wheels to turn.

To provide the pulse of energy needed for an intense bass, some car stereo systems add capacitors. One system uses a 2.4F capacitor charged to 24 V, double the normal 12 V provided by the car's battery.

Meteoroids usually come from?

The maximum pressure variations the human ear can withstand are about how much above and below atmospheric pressure?

Find the sum of two vectors: x = 5m 60° and y = 6m 150°

An aircraft has a liftoff speed of 33 m/s. What is the minimum constant acceleration an airplane must have to reach that takeoff speed if the runway is only 240 m long?

Select the sentence that best describes why copper and some other metals are good conductors.

If your traveling at 65 miles per hour, how many feet will you be traveling in one second?

Use a (t) = - 32 feet per second per second as the acceleration due to gravity. (Neglect air resistance.

Which planet has a tilted axis of rotation similar to that of Earth, which means it has seasons? Select one: a. Jupiter b. Uranus c. Mars d. Neptune