Answer the short answer questions 1. A tree 20 m high is located 40 m from the converging lens of focal length 8.0 cm.
(a) Calculate the distance from the lens to the image.
(b) Calculate the magnification.
(c) Calculate the height of the image of the tree.

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational