If the visible light spectrum is from 400 nm to 700 would light with an energy of 2.79*10-19) be visible with the naked eye?

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b.colder climates near the equator c.large waves on the cost of europe d.warm climates in northern europe