Aspring has a spring constant of 48 n/m. the end of the spring hangs 8 m above the ground. how much weight can be placed on the spring so that the end of the spring is 2 m above the ground?

96 n
288 n
384 n
480 n

Why is alchemy not considered to be a science ?

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?

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c