A 2 kg object moves in a circle of radius 4 m at a constant speed of 3 m/s. A net force of
4.5 N acts on the object.
What is the magnitude of the angular mo-
mentum || | || of the object with respect to an
axis perpendicular to the circle and through
its center?

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) ! : )