# Physics

The water from two buckets is mixed together. One bucket contains 5kg of water at 20 degrees Celsius and the other contains 1kg of water at 80 degrees Celsius.

What is the final temperature of the mixture, assuming no heat is lost to the surroundings?

A. 30 degrees Celsius
B. 50 degrees Celsius
C. 60 degrees Celsius
D. 70 degrees Celsius

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1. heat in = 5 (T-20)C
heat out = 1 (80 -T)C
so
5 T - 100 = 80 - T

6 T - 180

T = 30

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3. Question

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