A crate weighing 250 N is pulled up a 20° incline by a rope with a tension of 200 N. If the crate moves 5 m up the incline, what was the work done on the crate by the rope? (T remains constant throughout)

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )