Define the refraction index of a medium..
whatt do you mean by the
that the critical angle
glass is 42°​

True or false: the revolution of the earth creates day and night as it rotates around the sun

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward

Work = force × a. work b. energy c. distance d. momentum