Friday

July 25, 2014

July 25, 2014

Posted by **piper** on Thursday, April 8, 2010 at 11:04am.

H = 4 + 16e-.02t

How fast is the water cooling initially? After 10 minutes? Include units in your answer

- Math -
**Reiny**, Thursday, April 8, 2010 at 11:13amDo you have a typo?

Should it not be H = 4 + 16e^(-.02t) ?

if so, then ....

dH/dt = - .32e^(-.02t)

Initially means t = 0

dH/dt = -.32e^0 = - .32° / minute

when t=10

dH/dt = -.32e^(-.2) = -.26° / min

check my arithmetic

**Related Questions**

math - 1. With time, t, in minutes, the temperature, H, in degrees Celsius, of a...

physics - A refrigerator has a coefficient of performance of 2.25, runs on an ...

physics - A refrigerator has a coefficient of performance of 2.25, runs on an ...

Math - on a day when the air temperature is 34 degrees celsius, a can of soft ...

Math - Is this correct? The inside of your refrigerator might be set to a ...

physics - A Pyrex flask in a refrigerator at -8 degrees Celsius is filled to the...

Chemistry - A portable electric water heater transfers 255 watts (W) of power to...

Science - Is the answer 26 celsius? Is it possible that the temp is greater than...

physics - Suppose that you want to freeze 1.2 kg of water for a party, and only ...

physics - A sealed glass bottle containing air at atmospheric pressure (101kPa) ...