Friday
March 27, 2015

Homework Help: physics

Posted by Akbar on Thursday, April 26, 2012 at 4:41pm.

A 34 g glass thermometer reads 21.6C before it is placed in 135 mL of water. When the water and thermometer come to equilibrium, the thermometer reads 38.7C. What was the original temperature of the water?


I need help on this please could someone please help out.Thank you!

Physics - bobpursley, Tuesday, April 24, 2012 at 5:53pm

the sum of heats gained is zero.

massglass*specheatglass*(21.6-38.7)+135*specheatwater*(Ti-38.6)=0

solve for Ti

Physics - Akbar, Tuesday, April 24, 2012 at 6:58pm

I got 15.43 degree Celsius but its wrong. I don't know why please help. Thank you!

physics - bobpursley, Wednesday, April 25, 2012 at 12:14pm

well, it is wrong, you know the final answer is between 21.6 and 38.7C

Let me see your calculations, including what you used as specific heats of glass and water.

physics - Akbar, Wednesday, April 25, 2012 at 12:36pm

This is how I did it:

(.034)(840)(21.6-38.7)+135(4186)(Ti-38.6)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - A 34 g glass thermometer reads 21.6C before it is placed in 135 mL of...
Physics Please someone help please - A 34 g glass thermometer reads 21.6C ...
physics - A 34 g glass thermometer reads 21.6C before it is placed in 135 mL of...
physics - A 34 g glass thermometer reads 21.6C before it is placed in 135 mL of...
physics - A thermometer of mass 0.0550 kg and of specific heat 0.837 kJ/kgK ...
thermodynamics - A thermometer of mass 0.0550 kg and of specific heat 0.837 kJ/...
physics - When an immersion glass thermometer is used to measure the temperature...
engineering - A thermometer is used to measure the temperature of a gas flow ...
algebra - A thermometer is guaranteed to give a temperature no more than 1.2 ...
Math - Express each statement using an inequality involving absolute value.Do ...

Members