A block of mass 12.0 kg rests on a horizontal surface. The coefficient of static friction between the surfaces is 0.450. What is the maximum possible force that can be applied to the block before it begins to move?

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) ! : )