Electrostatics> A beaker contains 200 g of water. The wat...

A beaker contains 200 g of water. The water equivalent of beaker is 20 gm. The initial temperature of water in the beaker is 20°C. If 440 g of hot water at 92°C is poured in, then the final temperature, will be nearest to: (neglect heat loss)
(1) 58°C (2) 68°C (3) 73°C (4) none

rahul , 10 Years ago

Grade 10

1 Answers

Abhinav

Last Activity: 10 Years ago

knowing that no heat is lost

using $Q=ms\bigtriangleup t$

we can write

$(200+20)\times s\times (x-20) +440\times s\times (x-92)=0$

where $x$ is final temperature

so, $x$ =68^oC

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Electrostatics> A beaker contains 200 g of water. The wat...

A beaker contains 200 g of water. The water equivalent of beaker is 20 gm. The initial temperature of water in the beaker is 20°C. If 440 g of hot water at 92°C is poured in, then the final temperature, will be nearest to: (neglect heat loss)(1) 58°C (2) 68°C (3) 73°C (4) none

rahul , 10 Years ago

Abhinav

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