This diagram shows two closed, insulated compartments, where no energy can escape. Both compartments contain water of equal volume but varying temperatures of 50°C and 25°C respectively.
If the temperature of the water measuring 50°C decreased by 5°C, the temperature of the water measuring 25°C would
Required
2 points
2
Question 2
2.
What is always the direction of heat transfer?
Required
2 points
2
Question 3
3.
A celebrity chef is looking for a metal-plated pan that she can heat to as high a temperature as possible for a given input of energy. Her different pan options are copper, iron, and aluminum. All of the pans have the same mass. Observe the specific heat capacities of the metals shown in the table below. Which metal pan should the chef choose because it undergoes the largest temperature change for a given input of energy?
Required
2 points
2
Question 4
4.
During a lab, a student stirs crushed ice into warm water. How will this system behave, according to the second law of thermodynamics?
Required
2 points
2
Question 5
5.
The diagram shows a copper cylinder being heated by a Bunsen burner. Point A is at the heat source. In which direction will the heat flow?