<h2>
Answer:</h2>
If a car is rounding a flat curve, it experiences a centripetal force that pulls it towards the center of the circle it is rotating in.
Now,
The centripetal force can be balanced by the centrifugal force caused due to the acceleration of the body at the high speed which counters the centripetal force and in turn <u>prevents the car from slipping down the curve.</u>
So,
If the car doesn't hit the gas then the <em><u>car will fall down from the curve</u></em> as the Centripetal force will exceed the Centrifugal force of the car.
However, if the car doesn't hit the brake then the <em><u>car will maintain it's position on the flat curve</u></em> track as the centrifugal force will counter the effect of centripetal force directed towards the center.
The third one sliding friction
Explanation:
Answer:
![\mu = \frac{r (2\pi f)^{2}}{g}](https://tex.z-dn.net/?f=%5Cmu%20%3D%20%5Cfrac%7Br%20%282%5Cpi%20f%29%5E%7B2%7D%7D%7Bg%7D)
Explanation:
= normal force acting on the coin
Normal force in the upward direction balances the weight of the coin, hence
![N = mg](https://tex.z-dn.net/?f=N%20%3D%20mg)
= frequency of rotation
Angular velocity of turntable is hence given as
![w = 2\pi f](https://tex.z-dn.net/?f=w%20%3D%202%5Cpi%20f)
= distance from the axis of rotation
= minimum coefficient of static friction
static frictional force is given as
![f = \mu N\\f = \mu mg](https://tex.z-dn.net/?f=f%20%3D%20%5Cmu%20N%5C%5Cf%20%3D%20%5Cmu%20mg)
The static frictional force provides the necessary centripetal force , hence
Centripetal force = Static frictional force
![m r w^{2} = \mu mg\\r w^{2} = \mu g\\\\\mu = \frac{r w^{2}}{g} \\\mu = \frac{r (2\pi f)^{2}}{g}](https://tex.z-dn.net/?f=m%20r%20w%5E%7B2%7D%20%3D%20%5Cmu%20mg%5C%5Cr%20w%5E%7B2%7D%20%3D%20%5Cmu%20g%5C%5C%5C%5C%5Cmu%20%3D%20%5Cfrac%7Br%20w%5E%7B2%7D%7D%7Bg%7D%20%5C%5C%5Cmu%20%3D%20%5Cfrac%7Br%20%282%5Cpi%20f%29%5E%7B2%7D%7D%7Bg%7D)
Photon is a quantum of light or a single packet/particle of light at a given wavelength.
Answer: Option B
<u>Explanation:
</u>
It is known that light has dual nature of wave as well as particles. Light waves can behave in wave nature as well as in particle nature depending upon the situation. So the light waves are assumed in different views to easily understand the nature of light waves.
There are several models proposed to simplify the nature of light. Among the several assumptions, one of the most prominent observations are that light waves or quantum of light are termed as photons which are made up of single packet/particles of light in a given wavelength.