According to the bohr model of the hydrogen atom, visible radiations of light from atoms are directly due to electrons jumping from an inner orbit to an outer orbit. ejection of protons from the nucleus. electrons falling from an outer orbit to an inner orbit. rotation of electrons in their orbits.

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

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?