Answer:
Wavelength = 489.52 nm
Explanation:
Given that the wavelength of the light = 633 nm
The time taken by the light in unknown liquid = 1.38 ns
Also,
1 ns = 10⁻⁹ s
So, t = 1.38 × 10⁻⁹ s
Also,
Distance = 32.0 cm = 0.32 m ( 1 cm = 0.01 m)
<u>So, speed of the light in the liquid = Distance / Time = 0.32 / 1.38 × 10⁻⁹ m/s = 2.32 × 10⁸ m/s</u>
Frequency of the light does not change when light travels from one medium to another. So,
So,
<u>Wavelength = 489.52 nm</u>
Answer: It is the product of the (force)multiplied by the (perpendicular) distance from the line of action of the force to the pivot
Explanation:
A fire because you feed it wood, it lives longer but if you give it a drink, water, then it dies.
In the equation for the gravitational force between two objects, the distance quantity or measurement must be squared. The formula for calculation the gravitational force between two objects is F = G*m1*m2/d^2. F is the gravitational force between the two objects. G is the constant gravity, m1 is the first object's mass, m2 is the second object's mass, and d is the distance between the two objects<span>.</span>
If light is moving inside the glass, it will be reflected when the angle of incidence is above the critical angle of the material, which is given by
where
is the refractive index of air
is the refractive index of this type of glass
If we plug the numbers into the equation, we find
So, light will be reflected inside the glass when the angle is equal or greater than this value.