An 5 kg object is 6 meters up a hill. Find potential energy.

Which subatomic particle has a negative charge

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

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) ! : )