Two large containers A and B of the same size are filled with different fluids. The fluids in containers A and B are maintained at 0 C and 100 C, respectively. A small metal bar, whose initial temperature is 100 C, is lowered into container A. After 1 minute the temperature of the bar is 90 C. After 2 minutes the bar is removed and instantly transferred to the other container. After 1 minute in container B the temperature of the bar rises 10 C. How long, measured from the start of the entire process, will it take the bar to reach 99.9 C?

Solution Summary

This shows how to determine how long it will take for a container to reach a given temperature.

Let y represent the temperature in fahrenheit of an object in a room whose temperature is kept at a constant 60 degrees. If the object cools from 100 degrees to 90 degrees in 10 minute, how long will it take for its temperature to decrease to 80 degrees?

What is the temperature coefficient? What is the appropriate equation for the temperature coefficient? Why is it relevant to animal physiology? What does it tell us about ectotherm metabolic rate and temperature?

If a cup of coffee has temperature 95 degrees Celsius in a room where the temperature is 20 degrees Celsius, then according to Newton's Law of Cooling, the temperature of the coffee after t minutes is T(t)=20+75e^(-t/50). What is the average temperature of the coffee during the first half hour?

The temperature of a chemical reaction is given by the formula: T(t) = 8e-0.3(t-2)^2 + 7, where T is the temperature and t is the time in seconds since the reaction was started.
a) Draw a neat graph showing the reaction temperature during the first eight seconds of the reaction.
b) What is the maximum temperature reached dur

2. A 2kg copper pot contains 8 kg of water. Both are initially at 20°C. If heat is added so that the temperature is now 80°C, determine the amount of heat is put into each material; the copper and the water.
3. If we have 500ml of water, how many joules of energy will be required to change the temperature from 25°C to 95°

A 0.039 kg aluminum bullet traveling at 420 m/s strikes an armor plate and comes to a stop. If all its energy is converted to heat that is absorbed by the bullet, what is the bullet's temperaturechange in degrees Celsius?

A sample of gas occupies 234 mL at 3.56 atm and 79.0 degrees C. The volume change to 438 mL and the pressure is changed to 2.92 atm. What is the new temperature in Kelvin?
A. 28.0
B. 0.00824
C. 541
D. -273
E. 0.00436

The temperature, in degrees Celsius, of the water in a pond is a differentiable function W of time t. The table below shows the water temperature as recorded every 3 days over a 15-day period.
(Chart is in attachment)
a) Use the date from the table to find an approximation for W'(12). Show the computations that lead to you

Each of two bodies has a heat capacity given, in the temperature range of interest, by
C = A + BT
• Where A = 8.0 J/K and B = 0.02 J/K2.
If the two bodies are initially at temperatures: T10 = 400.0 K and T20 = 200.0 K, and if they are brought into thermal contact, what is the final temperature and what is the change in entr