You can only carried forward any loss over $3,000, not carry over $3,000. You would claim your $20,000 losses in 2013. However, only $3,000 would be deductible. The remaining $17,000 in losses would carry forward to 2014.
The answer is 0.0166666666667. We assume you are converting between hertz and RPM. The SI derived unit for frequency is the hertz. 1 hertz is equal to 60 RPM. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between hertz and RPM. Type in your own numbers in the form to convert the units! You can do the reverse unit conversion from RPM to hertz, or enter any two units below: I'm feeling lucky, show me some random units.
If you allow the car to drive around and I think it will eventually put the charge back in the battery. Here's a chart showing some auto alternator curves. If you run the car at cruising speed (not idle) then you will hit 1500 RPM or more and this chart indicates you can get 50, 100, or more amps from it. Even if you get 50Amps a typcail car battery is maybe 60 Amp hours so you could charge the whole bettery with an hours driving.