I'm in a test i need answers asap which statement about forces is true?
a. forces are defined by strength but not direction
b. forces are defined by direction but not strength
c. forces are defined by both strength and direction
d. forces act only on objects that are in contact

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) ! : )