In an isolated system where two blocks come into contact, heat will flow from the hotter block to the cooler block until they reach thermal equilibrium (the same temperature).
In this scenario, Block 1 starts at 40 degrees Celsius and Block 2 starts at 20 degrees Celsius.
The ending temperature will be somewhere between these two temperatures. To find the equilibrium temperature, you can use the formula for conservation of energy, but given the context and the options presented, we can deduce what the final temperature could reasonably be.
The correct choice must reflect a final temperature where both blocks reach the same temperature.
- A. Block 1: 50 degrees Celsius, Block 2: 20 degrees Celsius (not equal)
- B. Block 1: 70 degrees Celsius, Block 2: 70 degrees Celsius (not possible, as Block 1 starts at 40°C)
- C. Block 1: 20 degrees Celsius, Block 2: 50 degrees Celsius (not equal, and also impossible)
- D. Block 1: 30 degrees Celsius, Block 2: 30 degrees Celsius (both equal)
Since D is the only choice where the temperatures are equal (and the only feasible ending temperature that is between 20°C and 40°C), the correct answer is:
D. Block 1: 30 degrees Celsius, Block 2: 30 degrees Celsius.
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