10 pts. if an electromagnetic wave has a frequency of 8 ⋅ 10^14 h z , what is its wavelength? use λ=v/f. the speed of light is 3 ⋅ 10^8 m/s.

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

What object a collides with object b and bounces back its final momentum is?