Which best describes what happens when light reaches opaque materials?

a) all the light pass thru

b) no light pass thru

c) some light pass thru and some reflects

d) the light is mostly absorbed and some bounces off in mant directions

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?

If steel is more dense that lake water, why can a boat float

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight