A block of glass initially at absorbs of energy

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

250\,\text{g}

block of glass initially at

20^{\circ}\!\text{C}

absorbs

18\,\text{kJ}

of energy. The specific heat of glass is

840\,\text{J\,kg}^{-1}\,^{\circ}\!\text{C}^{-1}

. What is the approximate final temperature of the block? (a)

92^{\circ}\!\text{C}

(b)

41^{\circ}\!\text{C}

(c)

106^{\circ}\!\text{C}

(d)

86^{\circ}\!\text{C}