Why do I hear a loud sound when I put my ear against the wall and knock

How do you describe the motion of an object?

Which of the following would be useful to show the growth rate of plants at verying temperatures? A. bar graph B. frequency table C. circle graph D. line graph

5) Students use a balance to determine the mass of a marble is 7.5 grams. A graduated bottle contains 10.0 milliliters of water.

An object has a mass of 120 kg on the moon. What is the force of gravity acting on the object on the moon?

Which observation would be evidence that heat was transferred by radiation? a. a person feels colder when the wind is blowing. b. a pan on a stove heats up the food placed in it. c. warm air in the kitchen rises to the second floor of the house. d.

If two waves in the same space interfere completely destructively, which of the following occurs? A. The amplitude decreases. B. The amplitude increases. C. The wave speed increases. D. The wave speed decreases.

An electric force exists between which pair of objects? Check all that apply. A) a neutral object and a negative object two negative objects B) a neutral object and a positive object C) two positive objects D) a negative object and a positive object

A person jogs 40 km in 32 minutes then 20 km in 22 minutes and finally 10 km in 16 minutes what is his average speed in in per minute

Write a sentence describing the relationship between volume and time

For two different inertial frames of reference would acceleration and change in velocity be different? How would energy be affected?