An aluminum electric tea kettle with a mass of 500 g is heated with a 500-W heating coil

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Thermodynamics · Thermodynamics

Problem

An aluminum electric tea kettle with a mass of 500 g is heated with a 500-W heating coil. How long will it take to heat up 1.0 kg of water from

18^\circ\text{C}

98^\circ\text{C}

in the tea kettle? The specific heat of aluminum is

900 \text{ J/kg} \cdot \text{K}

and that of water is

4186 \text{ J/kg} \cdot \text{K}

. (a) 5.0 minutes (b) 7.0 minutes (c) 12 minutes (d) 15 minutes