Determine the density in kg/m3 of a solid whose mass is 40g and whose dimensions in cm are 30×4×3

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?

=force × distance a. work b. velocity c. pressure d. momentum

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.