12. A solar heater uses energy from the Sun to heat water. The panels of the heater are painted black.
Why is this?

Apassenger walks toward the rear of a moving train. describe her motion as seen from a reference point on the train. then describe it from a reference point on the ground

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?

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)