Which best describes the motion of air particles when a sound wave passes through them?
a.
the particles move together and apart perpendicular to the direction of the wave.
b.
air particles move parallel to the sound waves
c.
the particles move perpendicular to the direction of the wave.
d.
the particles move both perpendicular and parallel to the direction of the wave.

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

Which of the following is the result of the nuclear weak force? the instability of large nuclei the repelling force between positively charged protons the structure of the atom certain types of nuclear decay

What is a possible result of higher air temperature caused by global warming