Question

A photon of red light (wavelength = 700 nm) and a Ping Pong ball (mass=2.10 x 10⁻³ kg) have the same momentum. At what speed is the ball moving?

Answer 1

To find the speed of the Ping Pong ball, we'll equate its momentum to that of the photons and solve for its velocity using the formula momentum = mass x velocity.

Step-by-step explanation:

The momentum of a photon is given by the equation p = h/λ, where p is the momentum, h is Planck's constant, and λ is the wavelength. To find the speed of the Ping Pong ball, we'll equate its momentum to that of the photons.

Using the given wavelength of the red light (700 nm) and the momentum equation, we can calculate the momentum of the photon. Then we can equate it to the momentum of the Ping Pong ball and solve for its speed using the formula momentum = mass x velocity.