A scoop of ice cream is placed on top of a warm piece of pie in a bowl.
Which statements about the scenario are true?
(Select all that apply.)
the pies energy will destroy a portion of the ice creams energy
the overall amount of energy in the bowl will neither increase nor decrease
the pie will decrease in energy
the ice cream will increase energy
please help
Assuming that the bowl is a perfect insulator, and does not absorb any of the energies involved, then only A is false. No energy is destroyed.
C and D certainly will occur.
If the bowl interacts with the pie and ice cream, then depending on its temperature, it might affect things in several ways.
thank you (:
From the given options, the following statements are true:
- The pie will decrease in energy: The warm pie will transfer some of its heat energy to the cooler ice cream, causing the pie to cool down and lose energy.
- The overall amount of energy in the bowl will neither increase nor decrease: Energy is conserved in a closed system, meaning that energy cannot be created or destroyed, only transferred or transformed. In this scenario, the energy transfer between the pie and ice cream results in a net zero change in the overall amount of energy in the bowl.
- The ice cream will increase energy: As the warm pie transfers some of its heat energy to the cold ice cream, the ice cream will gain energy and start to melt or become warmer.
To determine which statements are true, let's examine the energy transfers and changes in this scenario:
1. "The pie's energy will destroy a portion of the ice cream's energy."
This statement is not true. Energy cannot be destroyed; it can only be transferred or converted from one form to another. In this scenario, the transfer of energy between the pie and ice cream will occur but not destroy any portion of energy.
2. "The overall amount of energy in the bowl will neither increase nor decrease."
This statement is true. According to the law of conservation of energy, the total amount of energy in a closed system (such as the bowl with pie and ice cream) remains constant. Energy can be transferred between objects, but the total energy within the system remains unchanged.
3. "The pie will decrease in energy."
This statement is true. As the warm pie comes into contact with the cooler ice cream, heat energy will transfer from the pie to the ice cream until they both reach a thermal equilibrium. As a result, the pie will lose energy, specifically in the form of heat.
4. "The ice cream will increase energy."
This statement is not true. Since the ice cream is colder than the pie, heat energy will transfer from the pie to the ice cream until they both reach the same temperature. The ice cream may gain energy in the form of heat, but it will not increase its overall energy.
In summary, the correct statements are:
- The overall amount of energy in the bowl will neither increase nor decrease.
- The pie will decrease in energy.