Because of the doppler effect, sounds coming from a moving source

question 6 options:

a seem louder than if the source were not moving.

b are of a higher frequency if the source is moving away from the observer.

c have a lower frequency if the source is moving toward the observer.

d have a higher frequency if the source is moving toward the observer.

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.