Which statement does not explain the concept of the doppler effect? the answer is: as a sound source moves away from a stationary object, the sound waves are compressed, increasing the pitch. why? do i just have the question wrong i am so confused i thought that as a sound source moved away, the sound waves don't compress decreasing the pitch?

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical