Homework Help: physics

Posted by chx on Monday, January 23, 2012 at 3:23am.

A thermometer of mass 0.0550 kg and of specific heat 0.837 kJ/kg•K reads 15.0°C. It is then completely immersed in 0.300 kg of water, and it comes to the same final temperature as the water. If the thermometer reads 44.0 °C, what was the temperature of the water before the insertion of the thermometer?

physics - drwls, Monday, January 23, 2012 at 5:45am
The temperature of the water will drop as heat is added to the thermometer as it reaches an equilibrium temperature.

The specific heat of the water is 4.18 kJ/Kg*K

heat gained by thermometer
= heat lost by water

0.055*(0.837)(44 - 15) = 0.300*(4.18)(T - 44)

1.335 = 1.254 (T-44)
T - 44 = 1.08
T = 45.08 C is the initial water temperature

Answer this Question

Related Questions

thermodynamics - A thermometer of mass 0.0550 kg and of specific heat 0.837 kJ/...
physics - What mass (in grams) of steam at 100°C must be mixed with 341 g of...
thermal physics - What mass (in grams) of steam at 100°C must be mixed with ...
thermal physics - What mass (in grams) of steam at 100°C must be mixed with ...
Physics - A mass of 4.77 kg of chilled water at 0C is placed in a freezer ...
PHysics-almost complete! - In a physics lab experiment, a student immersed 205 ...
Physics, almost have it! - In a physics lab experiment, a student immersed 205 ...
Chemistry - You take 2 liters of water at 20 degrees Celsius and remove heat at ...
PHYSICS _ please help - A metal block of volume 1 * 10^3 cm^3 is suspended from ...
physics - When an immersion glass thermometer is used to measure the temperature...

For Further Reading

First Name:
School Subject:
Answer: