High-level clouds usually occur above 20,000 ft. which is the best description of the clouds’ appearance? a. thin and composed of rain b. heap like and composed of rain c. puffy and composed of ice crystals d. thin and composed of ice crystals

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) ! : )