A system of lenses has light passing through a converging lens and then through a diverging lens. An object is 1.70 cm to the left of the converging lens, the lenses are 4.30 cm apart, and the focal length of the converging lens is 1.00 cm. Required:
Draw the ray diagram for the image formed by this system of lenses.

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

Which notation is used to represent an alpha particle? a. b. c. d.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final