Estimations!

Estimation is hard. I worked with Callie on some of these, and between the two of us, we figured some things out.

For the TV, I assumed the voltage to be 120V as it would plug into a basic electrical outlet. I then tried to draw on knowledge of an LED light to estimate current. Using the basic P=IV function, I came up with 85 watts.

I used basically the same process for the computer, as it still might use an electrical outlet (120 V), so the power would be about the same.

For the car, it was a bit more difficult as I tried to first determine work in Joules, then used a random unit of time (1 hour), as we weren't given anything to go on. I assumed the mass of a car to be about 2000 kg. to find acceleration, I just estimated values based on what I know about driving...

For the motorcycle, I used the same process, but changed the mass to be about 500 kg.

For the fridge, I used a similar process as for the TV, but since the fridge is a larger appliance, I used 220V for the voltage.

Since a standard microwave is around 1000 watts, it's probably safe to estimate an oven is between 1000 and 5,000 watts, as it is a lot bigger.

For the radio, I assumed it was around the same as the computer, but its power might be a little less, as the computer does a lot more tasks. From what I determined earlier, I estimate the radio is about 50 watts.