Answer:
21.49 hrs
Explanation:
it is the longest day of daylight due to Alaska being closest to the au. at the time
Given:
The mass of the copper cylinder is: m = 76.8 g = 0.0768 kg
The change in the temperature is: T = 86.5 deg C - 19.5 deg C = 67 deg C
The specific heat is: c = 0.092 cal/g.C
To find:
Heat energy needed to heat the copper cylinder.
Explanation:
The specific heat is defined as the amount of heat energy needed to raise the temperature of a substance by one degree celcius.
The expression relating heat Q, mass m, specific heat c and temperature difference T is:

Substitute the values in the above equation, we get:

Final answer:
473.40 calories of heat is required to heat the copper cylinder.
The speed should be slower at the top of the ramp and gain speed toward the bottom of the ramp
"The quick brown fox jumped over the lazy dog."
I get 36 .