New Reply

The total quantity of heat received by the soup

 
Share Thread
Jun17-12, 06:10 AM   #1
 

The total quantity of heat received by the soup


1. The problem statement, all variables and given/known data
frozen soup of a mass of 0,40kg enters a microwave at -15°C. after 6 minutes the soup eaches a ° of 75°C
SHC of soup at solid state : c = 2100J/kg°C
SHC of liquid soup : c = 4200K/kg°C
SLH of fusion of soup : Lf = 330 000J/kg
melting point of soup : 0°C
THE QUESTION : WHAT IS THE TOTAL QUANTITY OF HEAT RECEIVED BY THE SOUP ?

2. Relevant equations
E = mcΔt
E= mL

3. The attempt at a solution
E = mcΔT
= 0,4 x 2100 x 15
=12600 J

E = mL
= 0,4 x 330 000
=132000J

E = mcΔT
= 0,4 x 4200 x 75
=126000

Etot = 132,000 + 12600 + 126000
=270600 J

teachers answer : 2 671 000 J
i have no idea how to get to it i am in my 5th year at the european school
1. The problem statement, all variables and given/known data



2. Relevant equations



3. The attempt at a solution
PhysOrg.com science news on PhysOrg.com

>> New language discovery reveals linguistic insights
>> US official: Solar plane to help ground energy use (Update)
>> Four microphones, computer algorithm enough to produce 3-D model of simple, convex room
Jun17-12, 03:39 PM   #2
 
mms0101,

I can't see anything wrong with your answer.

Ratch
Jun18-12, 05:18 AM   #3
 
Recognitions:
Gold Membership Gold Member
You're right, teach is wrong. Sure that was his answer?
Jun18-12, 03:28 PM   #4
 

The total quantity of heat received by the soup


ill go talk to him tomorrow as i have another answer to do with circuits that mismatch his ill let you know :) thank you anyway
New Reply

Tags
energy, heat, questions, shc

Similar discussions for: The total quantity of heat received by the soup
Thread Forum Replies
[SOLVED] Quantity of Heat/Specific Heat Water+Iron Introductory Physics Homework 3
How much water, initially at 20C, could be boiled by this quantity of heat Introductory Physics Homework 9
quantity of heat absorbed or released... Biology, Chemistry & Other Homework 1
quantity of heat Introductory Physics Homework 2
Generated Heat Quantity Introductory Physics Homework 14