Question

A metal sphere cools in a room at 30°C. At T = 70°C, dT/dt = −1.6°C/min. Find C.

Options

• −0.04

• −0.16

• −1.6

• −0.08

Answer 1

−0.04

Explanation:

Substituting values into Newton’s cooling equation gives C = −0.04 min⁻¹.