Answer:
b) The light slows down and it changes direction towards the perpendicular.
Explanation:
Light travels at different speed in different mediums.
Refractive index is equal to velocity of the light 'c' in empty space divided by the velocity 'v' in the substance.
Or ,
n = c/v.
Light travels at a slower speed in water as compared to air because there are more number of interfering molecules in the path of the light in case of water as compared to liquid.
<u>When a light travels from lower denser medium say water to higher denser medium say water, it bends towards the perpendicular as its speed reduces in that medium.</u>
Answer:
There are six major nutrients: Carbohydrates (CHO), Lipids (fats), Proteins, Vitamins, Minerals, Water.
Explanation:
The resulting positive amplitude of the two waves after the superimposition is 4.30 cm.
<h3>
Amplitude of the waves</h3>
The amplitude of the waves is the maximum displacement of the wave. This is the vertical position of the wave measured from the zero origin.
After the superimposition of the two similar waves, the resulting amplitude will be less than the initial amplitude of the wave with the highest vertical height since the superimposition creates destructive interference.
Resulting amplitude of the two waves is calculated as;
A = 5.4 cm - 1.10 cm
A = 4.30 cm
Thus, the resulting positive amplitude of the two waves after the superimposition is 4.30 cm.
Learn more about amplitude of waves here: brainly.com/question/25699025
Answer:
The angle of elevation of the Sun = 41.8°
Explanation:
Let the angle of elevation of the sun be θ
Using trigonometric relations,
Tan θ = opp/adj
opp = the height of the Washington Tower = 555 ft
adj = the length of the shadow = 620 ft
Tan θ = (555/620) = 0.8952
θ = Tan⁻¹ (0.8952) = 41.8°
Hence, the angle of elevation of the Sun = 41.8°
When light goes from one medium to another, it changes angle. This is why it will look bent.
