Just a little something to kick off your summer :D

Which quantities are scalars? choose all that apply a. distance b. speed c. acceleration d. velocity

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

The discovery of the electron as a subatomic particle was a result of