Under the doppler effect, if the source of a wave is moving, it must be changing the frequency of the wave. true false

b. A force 100N makes an angle of Ø with the x axis and has a y component of 30 N. Find both the x and y component of the force and the angle Ø.

What would your average speed have to be in order to complete the race in 4.5 hours? Give your answer in kilometers per hour. 38.4 kilometer race

What information can you use to calculate the empirical formula of a compound

If the mass of an object is doubled, it's gravitational force will:

Which example best represents translational kenetic energy

Which reaction obeys the law of conservation of mass?

Smaller bits of rock that pass through the atmosphere and slam into Earth's surface are called a. asteroids. b. meteors. c. meteorites. d. meteoroids.

What is the conversion from 1.2 mm to m

Which sentence contains italicized words that are used as an infinitive phrase? A. Kelly went to the grocery store. B. Tom went there for some flour. C. Mark wanted to go, but not today. D. Jane parked her car behind a truck.

The difference in electric potential between a thunder cloud and the ground is 1.53 108 V. Electrons move from the ground which is at a lower potential to the cloud which is at a higher potential.