Honey bees beat their wings, making a buzzing sound at a frequency of 2.3 * 10Æ hertz. What is the period of a bee's wing beat?

a. 4.3x10^-3

b. 2.6 x10^-3

c. 4.0 x10^3

d. 2.6x10^3 seconds

What is transmitted by all waves? energy mass matter sound

An object at rest has no net force acting on it. True False

British physicist j. j. thomson was the first to identify the a. atomic theory. b. proton. c. neutron. d. electron.

What is an important difference between nanotechnology and microtechnology? A. Nanotechnology shows results of quantum mechanics, but microtechnology does not. B. Microtechnology shows results of quantum mechanics, but nanotechnology does not. C.

To demonstrate an elastic collision, a teacher places a tennis ball on the floor. She wants to hit the ball so that the following conditions are satisfied. 1. After collision, the tennis ball should roll with the velocity of the ball that hit it 2.

What are the steps that are important to take for your safety during an earthquake? a. stay away from walls and windows c. stay away from electrical and gas lines b. get under a desk or table d. all of the above

You have an open air column of length 1.40 m in air at 24.2 °C. What is the frequency of the third harmonic?

Why do we use average force while solving momentum problems? How is net force related to the momentum of the object?

If you had a positive 8 score on the sit-an-reach test you

65 million years ago there was a mass extinction that is best known for killing the dinosaurs. There was also a large deposit of dust that contained substances only found in asteroids.