An object with a mass of 11 kg accelerates 7.4 m/s2 with an unknown force applied to it. What is the net force?

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than