URGENT!!! A sample of platinum was heated from 31.0°C to 51.0°C, and it took 62.2 calories of heat to do so. What was the mass of the piece of platinum?

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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