Acrowbar 28in long is pivoted 6in from the end what force must be applied at the long end in order to lift a 400 lb object at the short end

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?