At a distance of 15.0 m from a sound source, the intensity level is 60.0 db. what is the intensity level (in decibels) at a point 2.00 m from the source if the source radiates equally in all directions?

Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)

What is the increase in density of a medium due to wave travel?

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow