A golfer hits a golf ball horizontally off an elevator tee. The ball lands in the fairy’s at 280m away. The ball is hit with an initial velocity of 52.7m/s. What is the height above the fairway of the tee?

Arowboat passenger uses an oar to push the boat off the dock by exerting a force of 40n for 3.0s. what impulse acts on the boat.

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem