A bicyclist was moving at a rate of 8 m/s, and then sped up to 10 m/s. If the cyclist has a mass of 120 kg, how much work was needed to increase his velocity? (Hint: Use the work-kinetic energy theorem.)

How is an electromagnet different from a bar magnet? A) Only a bar magnet has a magnetic field. B) Only an electromagnet attracts materials made of iron.

State Einsiein's equation of photoelectric effect and what conservation principle does Einstein's equation represent

A person bounces up and down on a trampoline, while always staying in contact with it. The motion is simple harmonic motion, and it takes 1.90 s to complete one cycle. The height of each bounce above the equilibrium position is 45.0 cm.

How many particles are there in 111.6 g of iron?

Large vehicles need more room to make turns. when you approach an intersection and see a truck ahead signaling a right turn, you should stay next to the truck, close to the curbside, until the turn is completed.

1. At one time, people thought that heat was a substance called

How are magnet'so magnetic force and magnetic field different

Ahmed saw all of these things as he walked to school this morning. Which one is an example of a force pushing downward toward the ground? A. A bird sat on a telephone wire. B. A woman moved her child from one place to another in a wagon. C.

What types of mediums are involved in the energy transfer

When two frequencies are added together, the beat frequency and the average frequency are an octave apart?