An F note has a frequency of 698.46 Hz. Calculate its wavelength in meters. Sound travels at 343 m/s

Question 3 options:

2.04 m

0.491 m

2.04 ft

0.491 ft

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Which transition by an electron will release the greatest amount of energy? oa ob oc od

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?