Answer:
Option (B) is true
Explanation:
refractive index of water = n1
refractive index of air = na = 1
refractive index of oil = n2
When the ray goes from water to air
Use Snell's law
Let the angle of incidence is i
n1 Sin i = na x Sin r
For total internal reflection, r = 90°
n1 x Sin i = 1 x Sin 90
Sin i = 1 / n1 .... (1)
For water oil interface
angle of incidence is i and let the angle of refraction is r.
n1 x Sin i = n2 x Sin r
n1 x / 1 n1 = n2 Sin r (from equation (1)
Sinr = 1/n2
Answer:
The general shape of a frequency distribution. For many data sets, statisticians use this information to determine whether there is a “normal” distribution of values. In normal distributions, the mean, median, and mode are the same. Whether the distribution is symmetrical or skewed in a certain direction. If the data is skewed to the right, this shows the mean will be greater than the median. Similarly, if the data is skewed left, the mean will be less than the median. The symmetry, or asymmetry, of the chart can help statisticians calculate probability. The modality of the data set. This means how many peaks exist in the data. For normal distributions, there will be one peak, or mode, in the data set.
Explanation:
i just got it right on edgenuity :)
Heya!!
For calculate aceleration, let's applicate second law of Newton:
⇒ Being:
→ F = Force = 12 N
→ m = Mass = 3 kg
→ a = aceleration = ?
Lets replace according formula and leave the "a" alone:
Result:
The aceleration of the object is of <u>4 m/s²</u>
If the light is traveling straight up, then it hits the interface (surface
or boundary) between water and air perpendicularly (90° to the surface).
This direction is the direction of the 'normal' to the surface. So the
angle of incidence is zero, and that means the angle of refraction is
also zero. The light just keeps going in the same direction when it
emerges into the air, and is not bent.
However, its speed increases in air, and that means its wavelength
also becomes longer than it was in the water.
