Tuesday

March 31, 2015

March 31, 2015

Posted by **Sejul** on Sunday, September 2, 2012 at 2:55pm.

The storage freezer maintains a temperature of -10 degrees F.

Pork changes from solid to a thawed state at 30 degrees F and has the following properties:

Heat Capacity "c" (frozen) = 0.50 BTU/(lb x F degrees)

"c" thawed = 1.2 BTU/(lb. x F degrees)

Heat of fusion (hf) = 125 BTU/lb.

How many BTUs does it take to bring the roast to a tasty 200 degrees F?

- Science -
**DrBob222**, Sunday, September 2, 2012 at 6:47pmq1 is heat from -10 to 30

q1 = mass x specific heat of frozen x (Tfinal-Tinitial)

q2 = heat at 30 to thaw at 30.

q2 = mass x heat fusion

q3 = heat from 30 to 200

q3 = mass x specific heat of thawed x (Tfinal-Tinitial)

Total heat = q1 + q2 + q3

**Answer this Question**

**Related Questions**

Science - BTUs Please help - Although I vaguely see DrBob222's concept, I still ...

Physics - I understand there is a relationship between pressure & temperature in...

Science - Why does the temperature remain constant around 0 degrees C and 100 ...

Algebra - A temperature of 30 degrees F is equivalent to 271.89 degrees K, while...

Physics - On planet X, the alien residents use a temperature scale in which they...

Physics - 1). A hot iron horseshoe (mass=.40kg), just forged, is dropped into 1....

Physics - The graph shows the temperature versus time relationship for 2kg of ...

Math - This expression 1.8C + 32, show how to convert from degrees Celcius to ...

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

Calculus - The temperature of a cup of Starbucks coffee at time t (in minutes) ...