PLEASE HELP Which of the following shows the kinetic form of mechanical energy?

A. Pedaling a bicycle
B. Holding a basketball
C. Lying on the ground
D. Watching television

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?