Physics, 02.10.2019 04:00 mcky65

Abeam of light hits a sheet of metal. if it has enough energy, electrons break free from the metal sheet.

which choice correctly describes the behavior of light in this situation?

1. in this situation, light behaves as a particle colliding with another object. this is because increasing the energy in the light beam releases more electrons from the metal, but does not increase the energy carried by each electron.

2. in this situation, light behaves as a particle colliding with another object. this is because increasing the energy in the light beam increases the energy carried by each electron but does not increase the number of electrons released.

3.in this case, light acts like a wave because it requires the total energy of a wave to dislodge the electron. increasing the energy in the light beam releases more electrons and increases the energy carried by each electron.

4.in this case, light acts like a wave because it requires the total energy of a wave to dislodge the electron. increasing the energy in the light beam doesn’t releases any more electrons but it does increase the energy carried by each electron.

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 07:50

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.

Answers: 2

Answer

Physics, 22.06.2019 09:00

This is really important 1.which of the following prefixes represents the largest value? (2 points)gigahectorkilomilli2.which of the following types of graphs is best for plotting the mean, median, and mode of data? (2 points)bar graphbox-and-whiskercircle graphstem-and-leaf

Answers: 1

Answer

Physics, 22.06.2019 18:30

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.

Answers: 1

Answer

Physics, 23.06.2019 05:10

How do the forces acting on a boat compare to the force acting on a plane ?

Answers: 2

Answer

You know the right answer?

Abeam of light hits a sheet of metal. if it has enough energy, electrons break free from the metal s...

Questions

Physics, 16.12.2020 23:30

If it takes 50 J of work to climb a set of stairs, how fast would you have to climb them to use 5 watts of power?...