Why does light refract when entering a different medium of propagation?

Explanation:

When the light travels through other medium than air, the light travels at different speed from the speed of light. The speed of the light in material is related to index of refraction.

Hence, light have different speeds in different medium and also, will have different wavelength in different mediums.

The change in speed which occurs when the light propagates from one medium to the another is responsible for bending of the light which is known as refraction.

multiply 2kg by latent heat of vap

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.