The period of a certain wave is 20 seconds. What is the frequency of this wave? 0.05 waves/sec 10 waves/sec It depends on the medium. It depends on the speed of the wave.

A student jumps off a sled toward the West after it stops at the bottom of an icy hill. Based on the law of action-reaction, in what direction will the sled move as the student jumps off? East North South West

How do you calculate volume in an object?

Which of the following statements is true in the case of a collision? OA. Increased impact time will increase the impact force. OB. Reduced impact velocity will increase the impact force. Ос. Reduced impact mass will increase the impact force.

The chart shows the temperatures of four different substances. Another substance has less kinetic energy than substance Z but more kinetic energy than substance X.

These are his friends. Is that an observation or an inference?

Which of the following is the correct SI unit measuring amount of material contained in a solid sphere Kilograms Tons Ounces Pounds

Consider a particle with initial velocity v⃗ that has magnitude 12.0 m/s and is directed 60.0 degrees above the negative x axis. What is the x component v⃗ x of v⃗? What is the y component v⃗ y of v⃗?

Which is heavier, the earth or the moon

if the separation between two masses is doubled, does the gravitational force between them increase or decrease? By what factor?

A model rocket is fired vertically upward from rest. Its acceleration for the first three seconds is a (t) = 66 t, at which time the fuel is exhausted and it becomes a freely "falling" body.