Answer:
![a=4\ m/s^2](https://tex.z-dn.net/?f=a%3D4%5C%20m%2Fs%5E2)
Explanation:
Given that,
Radius, r = 2 m
Velocity, v = 1 m/s
We need to find the magnitude of the centripetal acceleration. The formula for the centripetal acceleration is given by :
![a=\dfrac{v^2}{r}\\\\a=\dfrac{(2)^2}{1}\\\\=4\ m/s^2](https://tex.z-dn.net/?f=a%3D%5Cdfrac%7Bv%5E2%7D%7Br%7D%5C%5C%5C%5Ca%3D%5Cdfrac%7B%282%29%5E2%7D%7B1%7D%5C%5C%5C%5C%3D4%5C%20m%2Fs%5E2)
So, the magnitude of centripetal acceleration is
.
As per the question the color of laser light is given as red.
If we arrange all the electromagnetic waves in the decreasing order of frequency ,then the electromagnetic spectrum contains gamma ray as the first which is followed by all other electromagnetic waves according to their frequency.
The visible light ranges from 400 nm to 700 nm which contains sunlight i.e white colors with it's constituent colors starting from violet to red. The red color is the longest wavelength part of the visible region.
The wavelength of visible light is longer than ultraviolet wave but smaller than infrared radiation. Except the bisible region,the color of radiation is invisible to eye.
As per the question the color of emiited laser radiation is red .Hence it must lie in the visible region of the electromagnetic spectrum.
A bird in the hand is worth two in the bush
or
actions speak louder than words
or
her bark is worse than her bite
i hope this helps these are examples of aphorism
Answer:
You will hear the note E₆
Explanation:
We know that:
Your speed = 88m/s
Original frequency = 1,046 Hz
Sound speed = 340 m/s
The Doppler effect says that:
![f' = \frac{v \pm v0 }{v \mp vs}*f](https://tex.z-dn.net/?f=f%27%20%3D%20%5Cfrac%7Bv%20%5Cpm%20v0%20%7D%7Bv%20%5Cmp%20vs%7D%2Af)
Where:
f = original frequency
f' = new frequency
v = velocity of the sound wave
v0 = your velocity
vs = velocity of the source, in this case, the source is the diva, we assume that she does not move, so vs = 0.
Replacing the values that we know in the equation we have:
![f' = \frac{340 m/s + 88m/s}{340 m/s} *1,046 Hz = 1,316.73 Hz](https://tex.z-dn.net/?f=f%27%20%3D%20%5Cfrac%7B340%20m%2Fs%20%2B%2088m%2Fs%7D%7B340%20m%2Fs%7D%20%2A1%2C046%20Hz%20%3D%201%2C316.73%20Hz)
This frequency is close to the note E₆ (1,318.5 Hz)
pitch goes up on approach ... Doppler effect