Maurice directs a beam of light on a sheet of glass at an angle of 51°. what is the angle of refraction in the glass? the refractive index of glass is 1.46. a. 22° b. 29° c. 32° d. 36°

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?

Place me with this question is my last question

Which is not true of the intertropical convergence zone? a) it features heavy precipitation b) it's where the trade winds collidec) it's a high-pressure zone with sinking air d) it is also known as the doldrums