Suppose you have two chains available to suspend an object in the air. let’s also say that you can arrange the suspension however you like. which arrangement would cause the least amount of tension on the chain or chains? a. image 3 b. image 4 c. image 2 d. image 1

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) ! : )