Why would we expect protogalactic clouds with relatively high density to form an elliptical galaxy rather than a spiral galaxy? A. The higher density allows the protogalactic cloud to cool slower
B. The higher density increases the gravitational potential energy
C. The higher density allows the protogalactic cloud to cool faster
D. The higher density increases the total angular momentum

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) ! : )