Answer:
ν = 5.45 x 10¹⁴ Hz
Explanation:
given,
wavelength of light = 550 nm
= 550 x 10⁻⁹ m
speed of light = 1.96 x 10⁸ m/s
speed of sound = 3 x 10⁸ m/s
frequency of the light = ?
we know.
frequency of the light in the liquid is same as the frequency of the light in the air.
ν is the frequency of light
ν = 5.45 x 10¹⁴ Hz
Hence, the frequency of light in the liquid is equal to ν = 5.45 x 10¹⁴ Hz
Answer:
(a). The acceleration is 8.3 rad/s².
(b). The time is 3.0 sec.
Explanation:
Given that,
Rotation = 20.0 times
Time = 5.00 sec
We need to calculate the angular frequency
Using formula of angular frequency
put the value into the formula
We need to calculate the angular displacement
Using formula of angular displacement
We need to calculate the angular acceleration
Using equation of angular motion
Negative sign shows the opposite direction of the motion.
The acceleration is 8.3 rad/s².
We need to calculate the time
Using equation of angular motion
The time is 3.0 sec.
Hence, (a). The acceleration is 8.3 rad/s².
(b). The time is 3.0 sec.
Answer:
a. It became deeper by a factor of 3.
Explanation:
What we have is water flowing down a river with constant width. The water slows from speed v to v3 over a shirt distance
Using the equation of continuity
A1V1 = A2V2 ----1
A1 is the area of rectangle
V1 is the velocity of water
Area of rectangle = length x width
We rewrite equation 1 as
λ1w1v1 = λ2w2v2
We have w1 = w2
λ1v1 = λ2v2
λ1*v1 = λ2*v/3
λ1 = λ2/3
So it becomes deeper by a factor of 3
