Physics

Problem

Students heat a

0.25\,\text{kg}

sample of water with a

150\,\text{W}

electric heater for

200\,\text{s}

. The temperature of the water rises by

25^{\circ}\text{C}

. What is the percent error of the students’ experimentally determined specific heat compared with the accepted value of

4.18\times10^{3}\,\text{J}\,(\text{kg}\cdot\text{K})^{-1}

? a)

21\%

5.9\%

15\%

12\%