A piece of copper of mass 110 g is being drilled through with a ¹/₂" electric drill.The drill operates at 35.0 W and takes 25.0 s to bore through the copper.If all the energy from the drill heats the copper,find the copper's increase in temperature.c_copper = 387 J/kg⋅°C.

Question

Quizplus · Accepted Answer

The amount of energy transferred to the copper can be calculated using the formula:

Energy = Power x Time

Energy = 35.0 W x 25.0 s = 875 J

The specific heat capacity of copper is given as c = 387 J/kg⋅°C. To find the increase in temperature of the copper, we use the formula:

Energy = mass x c x ΔT

Rearranging the formula, we can find ΔT as:

ΔT = Energy / (mass x c)

Substituting the given values, we get:

ΔT = 875 J / (0.110 kg x 387 J/kg⋅°C) = 20.6 C°

Therefore, the increase in temperature of the copper is 20.6 C°. The correct choice is C).

A Piece of Copper of Mass 110 G Is Being