The speed of a boat in still water is 20 mph. it travels from one pier to another with the current in 4 hours and back against the current in 6 hours and 40 minutes. if the distance between piers is 100 miles, what is the speed of the current

Match each scenario to the form of energy it represents

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) ! : )

The particles that are found in the nucleus of an atom are