If the critical angle of for the internal reflection inside a certain transparent material is found to be 48 degrees. What is the index of refraction of the material. (Air is outside the material refractive index of air=1.00)

d

explanation:

i think the answer is d. but im not sure!

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2

show the wavelengths of a wave. show the crests of a wave.