Draw the force body diagram of car in a circular path moving to south-east. include four items: centripetal force, centrifugal force, velocity and centripetal acceleration.

What is the frequency of a light wave with a wavelength of 620nm

The two required components for a generator

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?