I've had some complaints about the quizzes being too easy, so I thought of this one to raise the stakes a little......

This one is about calorimetry, measuring RF power by warming up water with it. You put a load in 1 liter of water and apply power for 2 minutes, then measure a temperature rise of 30 deg C. What is the power in watts?

118

437

856

1046

Answer: 1046 watts. power(W) = (m(ml) * dT(deg C) * 4.184) / t(sec)