What is the energy of an electromagnetic wave that has a frequency of 8.0 x 1015 Hz? Use the equation E = hf, where h = 6.626 x 10-34 J•s.
A. 5.3 x 1018 J
B. 1.2 x 1049
C. 1.2 x 10-49 J
D. 5.3 x 10-18 j

Write a question about how changing temperature affects the gas inside the sports ball

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy