To determine the direction of heat flow in each scenario, we need to understand that heat always flows from a higher temperature to a lower temperature until thermal equilibrium is reached. Let’s analyze each scenario:
Scenario A:
- Object 1: Lotion at [tex]\(27^{\circ} C\)[/tex]
- Object 2: Skin at [tex]\(37^{\circ} C\)[/tex]
Since [tex]\(37^{\circ} C\)[/tex] (Skin) is higher than [tex]\(27^{\circ} C\)[/tex] (Lotion), heat will flow from the skin to the lotion.
Direction: Skin to Lotion
Scenario B:
- Object 1: Lasagna at [tex]\(170^{\circ} C\)[/tex]
- Object 2: Plate at [tex]\(20^{\circ} C\)[/tex]
Since [tex]\(170^{\circ} C\)[/tex] (Lasagna) is higher than [tex]\(20^{\circ} C\)[/tex] (Plate), heat will flow from the lasagna to the plate.
Direction: Lasagna to Plate
Scenario C:
- Object 1: Ocean water at [tex]\(25^{\circ} C\)[/tex]
- Object 2: Lava at [tex]\(950^{\circ} C\)[/tex]
Since [tex]\(950^{\circ} C\)[/tex] (Lava) is higher than [tex]\(25^{\circ} C\)[/tex] (Ocean water), heat will flow from the lava to the ocean water.
Direction: Lava to Ocean water
Scenario D:
- Object 1: Eggs at [tex]\(2^{\circ} C\)[/tex]
- Object 2: Sidewalk at [tex]\(80^{\circ} C\)[/tex]
Since [tex]\(80^{\circ} C\)[/tex] (Sidewalk) is higher than [tex]\(2^{\circ} C\)[/tex] (Eggs), heat will flow from the sidewalk to the eggs.
Direction: Sidewalk to Eggs
So, the directions of heat flow for each scenario are:
Scenario A: Skin to Lotion
Scenario B: Lasagna to Plate
Scenario C: Lava to Ocean water
Scenario D: Sidewalk to Eggs
