10.(a) At what water depth is the pressure twice atmospheric pressure? (b) What is the pressure at the bottom of the 11-km-deep in the ocean? Take
atmospheric pressure as 100 kPa and the density of water as 1000 kg/m3.​

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) ! : )