An incandescent lightbulb has a power of 60 W in an efficiency of 1.7% a CFL bulb has the power of 18 W in an efficiency of 8.5% how much energy is used in the incandescent bulb is left on for 12 hours

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.