A 5-g coin is dropped from a 300-m building.If it reaches a terminal velocity of 45 m/s,and the rest of the energy is converted to heating the coin,what is the change in temperature (in $\degree$C)of the coin? (The specific heat of copper is 387 J/kg.$\degree$C. )
A)9
B)2
C)5
D)21
E)0.5

Question

Quizplus · Accepted Answer

The change in temperature can be calculated using the formula: ΔT = (mgh - 0.5mv^2) / (mc), where m is mass, g is gravity, h is height, v is velocity, and c is specific heat. Plugging in the values, ΔT = (0.005 * 9.8 * 300 - 0.5 * 0.005 * 45^2) / (0.005 * 387) ≈ 5°C.

A 5-G Coin Is Dropped from a 300-M Building °\degree° C)of the Coin? (The Specific Heat of Copper Is 387

A 5-G Coin Is Dropped from a 300-M Building $\degree$ C)of the Coin? (The Specific Heat of Copper Is 387