An electric heater works by passing a current of 100 A through a coiled metal wire, making it red hot. If the resistance of the wire is 1.1 ohms, what voltage must be applied to it

Which explains why the sky appears blue on a sunny day? A. Colors of light with longer wavelengths scatter too far for the eye to detect. B. Blue light scatters in all directions more than other colors of light. C.

Explain why it may make more sense to colonize on Venus, rather than Mars.

Suppose you are an observer standing on the Moon, looking back at Earth. If the moon is in the waxingquarter phase, what phase of the Earth would you see? A. waxing quarter B. full C. new D. waning quarter E. none; the Earth doesn't have phases

Name one type of technology that utilizes magnetism to function.

An unfingered guitar string is 0.68 m long and is tuned to play E above middle C (330 Hz). a) How far from the end of this string must a fret (and your finger) be placed to play A above middle C (440 Hz) ?

Consider what happens at the moment when the block leaves the surface of the globe. Which of the following statements are correct? - The net acceleration of the block is directed straight down.

A mechanic pushes a 3.00 ✕ 103-kg car from rest to a speed of v, doing 4,680 j of work in the process. during this time, the car moves 26.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Explain how latitude determines wind patterns

What is the difference between contact forces and forces that act through a force field?

Suppose two parallel-plate capacitors have the same charge Q. but the area of capacitor 1 is A and the area of capacitor 2 is 2A. 1.