. A point light source is kept in front of a convex mirror at a distance of 40 cm. The focal length of
the mirror is 40 cm. Find the position of image.

If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?