If a concave mirror has a focal length of 10.0 cm, what is the image distance of a pen that is placed upright 5.00 cm from the mirror? 10.0 cm
-10.0 cm
-5.00 cm
5.00 cm

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

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

Newtons view of arrangement of the universe