Which form of erosion would be the slowest?
A.
the flow of water creating a valley
B.
wind causing the sand in a desert to form a dune
C.
some of the sand on a beach washing out to sea
D.
a wind storm blowing dust to the south

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) ! : )