Correct answer choice is :
A) From A to B is known as the wavelength and changing the pitch of the note will change its length.
Explanation:
The amount or quantity of period within two things, points, lines, etc. the state or fact of existing separate in space, as of one thing from another; remoteness. a linear amount of space: Seven miles is a distance too great to walk in an hour. Distance is a scalar quantity describing the interval in two points. It is just the measure of the interval.
It is a field of study that make direct use of phenomena that is "quantum-mechanincal", such as superposition and entanglement. It's used to perform operations on data
Answer:
The moment of inertia about the rotation axis is 117.45 kg-m²
Explanation:
Given that,
Mass of one child = 16 kg
Mass of second child = 24 kg
Suppose a playground toy has two seats, each 6.1 kg, attached to very light rods of length r = 1.5 m.
We need to calculate the moment of inertia
Using formula of moment of inertia
![I=I_{1}+I_{2}](https://tex.z-dn.net/?f=I%3DI_%7B1%7D%2BI_%7B2%7D)
![I=(m+m_{1})\times r^2+(m+m_{2})\times r^2](https://tex.z-dn.net/?f=I%3D%28m%2Bm_%7B1%7D%29%5Ctimes%20r%5E2%2B%28m%2Bm_%7B2%7D%29%5Ctimes%20r%5E2)
m = mass of seat
m₁ =mass of one child
m₂ = mass of second child
r = radius of rod
Put the value into the formula
![I=(16+6.1)\times(1.5)^2+(24+6.1)\times(1.5)^2](https://tex.z-dn.net/?f=I%3D%2816%2B6.1%29%5Ctimes%281.5%29%5E2%2B%2824%2B6.1%29%5Ctimes%281.5%29%5E2)
![I=117.45\ kg-m^2](https://tex.z-dn.net/?f=I%3D117.45%5C%20kg-m%5E2)
Hence, The moment of inertia about the rotation axis is 117.45 kg-m²
The greater the cross-sectional area of an object, the greater the amount of air resistance it encounters since it collides with more air molecules. ... It will have to accelerate for a longer period of time before there is enough upward air resistance to balance the downward force of gravity.