The surface of the sun has a temp of 5500degrees c and temp of deep space is 3.0k find a and b. ? the surface of the sun has a temperature of 5500 degrees c and the temperature of deep space is 3.0 k. a)find the entropy increase produced by the sun in one day, given that it radiates heat at the rate of 3.80x10^26 w. b) how much work could have been done if this heat had been used to run an ideal heat engine?

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

The current through a 10 ohm resistor is 1.2 amperes.what is the potential difference across the resistor?