In order for a length of copper wire or a loop of copper wire to have a magnetic field, what must they have flowing through them?

What is required for an electric charge to flow through a wire? a) zero resistance in the wire b) a balance of electric potential c) high resistance in the wire d) a difference in electric potential

A modern electric car carries a battery with a 300~/text{MJ} (3 / times 10^{8}~/text{Joule}) 300 MJ (3*10 8 Joule) energy capacity. If the power used by the car while traveling at a steady pace of 25 / frac{m}{s}25 s m is measured to be 17.

Suppose you are asked to find the area of a rectangle that is 2.1-cm wide by 5.6-cm long. Your calculator answer would be 11.76 cm². Now suppose you are asked to enter the answer to two significant figures.

Review the following observations: Substance A changes a solution to green when mixed with Bromothymol blue indicator. Substance B changes a solution of red onion water to green. Substance C changes Turmeric water orange.

You slide a coffee mug across the table. The mug slides to the east and slows down while sliding. Which of the following statements best describes the net force acting on it? O The net force is zero. O The net force is directed east.

What is the mid-atlantic ridge? how many miles does it stretch?

A basketball player jumps straight up for a ball. To do this, he lowers his body 0.260 m and then accelerates through this distance by forcefully straightening his legs. This player leaves the floor with a vertical velocity sufficient to carry him 0.

Why does Mars have moons even when its mass is small?

During the forging process for a steel sword, the blacksmith places a hot iron blank into a cold bucket of water. Which of the following happens? A. The water molecules move faster. B. The steel molecules move faster. C.

If you are trying to balance a seesaw and you have a higher mass on the left, should the mass on the right be placed at a greater distance or lower distance to balance it? Why?