What determines how many electrons will leave a piece of metal in the photoelectric effect

1. If the wire is disconnected from the battery what two things will happen

Explain the difference between a fuse and a circuit breaker. If you were designing a circuit for a reading lamp, would you include a fuse, a circuit breaker, or neither? Explain your answer.

Explain the advantages and disadvantages of using concentric circles in describing the solar system to an elementary school child.

How does the force on the rifle compare with the force on the bullet, and why?

Gases will diffuse from a region of higher concentration to a region of lower concentration. why don't the gases in the earth's atmosphere escape into the near-vacuum of space?

Which of the following do not involve a direction? Check all that apply. A. Time B. Velocity C. Distance D. Acceleration

What does deltaX mean in physics?

Which activity involves using fossil fuels directly or indirectly? 1) eating fresh fruit for a snack 2) cooking hot dogs on a campfire 3) using crayons to color 4) walking to school

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction