Double
Explanation:
Since the period T of a pendulum is given by
![T = 2\pi \sqrt{\dfrac{l}{g}}](https://tex.z-dn.net/?f=T%20%3D%202%5Cpi%20%5Csqrt%7B%5Cdfrac%7Bl%7D%7Bg%7D%7D)
By increasing the length of the pendulum by 4, the period becomes
![T' = 2\pi \sqrt{\dfrac{4l}{g}} = 2\left(2\pi \sqrt{\dfrac{l}{g}}\right) = 2T](https://tex.z-dn.net/?f=T%27%20%3D%202%5Cpi%20%5Csqrt%7B%5Cdfrac%7B4l%7D%7Bg%7D%7D%20%3D%202%5Cleft%282%5Cpi%20%5Csqrt%7B%5Cdfrac%7Bl%7D%7Bg%7D%7D%5Cright%29%20%3D%202T)
You can see that the period doubles when we increase the length by a factor of 4.
Answer:
The Moon's distance from the Earth varies during its orbit
Explanation:
The correct statement is ,The Moon's distance from the Earth varies during its orbit.
Important point regarding moon:
1 .Moon is a natural satellite of the earth.
2. Moon is the fifth largest satellite in solar system.
3.Second densest satellite in solar system.
4.Moon rotates about earth.
5.Moon is an astronomical body .
<em>Important thing is that all unitless quantity is dimensionless quantity. .</em><em>A</em><em> dimensionless physical quantity may have an unit</em>
A place that is cold because of an increase in altitude has a mountain area climate or simply, mountain climate. An area that is high in altitude typically has a colder temperature because of the increased amount of rainfall they have. Also, air tends to cool as it rises in temperature.
Answer:
Basketball
Explanation:
Basketball was invented to keep athletes warm in the winter.