Energy Problems

Front

Light has characteristics of both a wave and a ____________.

Back

photon

Front

What is the frequency of UV light that has an energy of 2.39 × 10^-18 J?

Back

3.60 x 10^15 Hz

Front

Calculate the energy of a gamma ray photon whose frequency is 5.02 x 10^20 Hz.

Back

3.33 x 10^-13 J

Front

What is the energy of an X-ray with a frequency of 1.00 x 10^17 Hz?

Back

6.63 x 10^-17 J

Front

A joule is:

Back

a SI unit of measurement for energy

Front

What is the relationship between energy and frequency of a photon?

Back

Energy (E) is directly proportional to frequency (f): E = hf, where h is Planck's constant.

Front

What is Planck's constant?

Back

Planck's constant (h) is approximately 6.63 x 10^-34 J·s.

Front

How do you calculate the energy of a photon?

Back

Energy (E) = Planck's constant (h) × frequency (f).

Front

What is the speed of light in a vacuum?

Back

The speed of light (c) is approximately 3.00 x 10^8 m/s.

Front

What is the formula to find frequency from energy?

Back

Frequency (f) = Energy (E) / Planck's constant (h).