Calculate the frequency of an electromagnetic wave with a wavelength of 3,000 m. The speed of light is 3 x10^8 m/s.

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

Can you receive a shock severe enough to prevent you from releasing the wire from an ordinary outlet with dry hands? a. no b. yes explain