The power of our microwave transmitters is about 15 mw. what is the approximate power of a typical microwave oven?

A typical microwave oven produces effective output power in the range of 400 W - 1200 W.

A microwave oven is one of the daily used kitchen appliances which uses EM microwaves for heat generation and is used in reheating, quick heating or even in cooking food. It needs AC power input and the effective output power generated is always less than the consumed power.

Microwave ovens use magnetron tube for generation of microwaves with frequencies nearly 2450 MHz. Compact microwaves have a power output range of 600-800 W and larger models output power between 850 W and 1650 W.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

there are no contact forces mentioned on the list of choices that you've provided.