A narrow, monochromatic beam of light has a wavelength in a vacuum of 0.3.10^-12m A. determine the period, frequency of that light in a vacuum
B. calculate the speed and wavelength of that light as it travels through a transparent medium with a refractive index of 1.2

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?

True or false graphs must include scales that increase by the same amount

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.