Which of the following is needed to create an electromagnet?

a motor

electrical resistance

electric current

battery

Jax went to the vet and the scale reads 9 pounds. what does this mean?

A horizontal uniform board of weight 125N and length 4 m is supported by vertical chains at each end. A person weighing 500N sitting on the board. Thr tension in the right chain is 250N. How far from left of the end person is sitting

Energy is what makes matter do

If you have the p (charge per volume) value for a thick charged insulating cylindrical shell how do you find the linear density?

One side of the moon always faces Earth because the time it takes the moon to spin on its axis is blank the time it takes the moon to travel around Earth.

What is the density of cylindrical (coin) object if it has a mass of 0.69 kg, and a radius of 0.03 m, along with a thickness of 0.003 m?

A horse canters away from its trainer in a straight line, moving 37 m away in 9.1 s. It then turns abruptly and gallops halfway back in 1.8 s. Calculate its average speed for the entire trip. Express your answer using two significant figures.

A 13,000 N car starts at rest and rolls down a hill froma height of 10 m. It then moves across a level surfaceand collides with a light spring-loaded guardrail.

Convert 52.3 weeks into days 367.5 days 366.1 days 450 days

From the earth, the moon subtends an angle of approximately 0.5°. If the distance to the moon is approximately 240,000 miles, find an approximation for the diameter of the moon accurate to the nearest hundred miles.