The formula below, newton's law of cooling, allows us to calculate the temperature of an object as it cools. t = r + (t0 − r)e-kt t = temperature of the object after t minutes t0 = initial temperature r = temperature of the surroundings k = cooling rate (depends on the object and conditions) suppose the temperature in denver, colorado was 55°f when a 5°f arctic cold front moved over the state. using k = 0.012, how long would it take a puddle of water to freeze? (recall that water freezes at 32°f.)