This is a math/Physics Project that i have to do for my Pre Calc Class, if

fran

New member
anyone can help it will be great? A fast-food restaurant wants a special container to hold tea. the restaurant wishes to quickly cool the tea from 100 degrees C and keep the liquid between 43 degree C and 55 Degrees C as long as possible. The restaurant has three containers

1. the Hot Cup Company has a container that reduces the temperature of a liquid from 100 Degrees C to 38 Degrees in 30 minutes by maintaining a constant temperature of 21 Degree C

2. the Warm Cup Company has a container that reduces the temperature of a liquid from 100 Degrees C to 43 Degrees in 25 minutes by maintaining a constant temperature of 16 Degree C

3. the Boiling Cup Company has a container that reduces the temperature of a liquid from 100 Degrees C to 49 Degrees in 20 minutes by maintaining a constant temperature of 18 Degree C

You need to recommend which container the restaurant should purchase:

Use Newton's law of cooling to find a function relating the temperature of the liquid over the time for each container. U(t)=T+(U0 - T) e^tk
 
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