In the 1660s, who discovered that color is a direct function of light by passing sunlight through a prism and observing the bands of spectrum of colors?

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?