A ray of light traveling in diamond is incident on a block of sodium chloride at an angle of 20° from the normal. The angle of refraction of this ray in the sodium chloride is closest to A)
50°

B)
13°

C)
35°

D)
33°

answer: i don't know the answer good luck

explanation:

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.