Physics

Problem

A workshop machine works at

500\,\text{W}

for the first

2\,\text{minutes}

and then at

1.5\,\text{kW}

for the next

30\,\text{s}

. Find the total work done during the whole period. a)

6.0 \times 10^{4}\,\text{J}

1.05 \times 10^{5}\,\text{J}

1.50 \times 10^{5}\,\text{J}

9.0 \times 10^{4}\,\text{J}