A5.0 ohm resistor, a 10 ohm resistor and a 15.0 ohm resistor are connected in parallel with a battery. the current through the 5.0 ohm resistor is 2.4 amperes. calculate the amount of electrical energy expended

The consumption of fossil fuels could be

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped