. How is a refracting telescope similar to a compound microscope? Both instruments have a convex objective lens and a convex eyepiece lens. Both instruments use mirrors to gather light and lenses to enlarge images. Both instruments are used to enlarge small objects.

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same