A speaker fixed to a moving platform moves toward a wall, emitting a steady sound with a frequency of 250 hz. A person on the platform right next to the speaker detects the sound waves reflected off the wall and those emitted by the speaker.

Find the number if 3.7% of it is 37% of 37.

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.

If you constantly work its possible that you will become burned out at your job?