Answer:
The spring constant of the spring is 180 N/m.
Explanation:
It is given that,
Mass of the block, m = 0.42 kg
The block is pulled so that the spring stretches for 2.1 cm relative to its unstained length.
When the block is released, it moves with an acceleration of
. We need to find the spring constant of the spring. For a block to be in equilibrium, the net force is given by :
![kx=ma](https://tex.z-dn.net/?f=kx%3Dma)
k is spring constant of the spring
![k=\dfrac{ma}{x}\\\\k=\dfrac{0.42\times 9}{2.1\times 10^{-2}}\\\\k=180\ N/m](https://tex.z-dn.net/?f=k%3D%5Cdfrac%7Bma%7D%7Bx%7D%5C%5C%5C%5Ck%3D%5Cdfrac%7B0.42%5Ctimes%209%7D%7B2.1%5Ctimes%2010%5E%7B-2%7D%7D%5C%5C%5C%5Ck%3D180%5C%20N%2Fm)
So, the spring constant of the spring is 180 N/m.
The frequency of the red light is 428 terahertz. To get the value of the red light's frequency, use the formula F = velocity/wavelength. The velocity of light is 3.00 x 10^8 m/s. For easier computation, convert 700.5 nanometers to meter. 1 nanometer is equal to 1 x 10^-9 meters. 700.5 nanometers is equal to 7.005 x 10^-7 meters. Divide the velocity 3.00 x 10^8m/s by wavelength 7.005 x 10^-7 meters. The result will be 4.28 x 10^14 Hertz or 428 terahertz.
<h3><u>Answer;</u></h3>
It has allowed for faster transmission of Internet signals.
<h3><u>Explanation</u>;</h3>
- <em><u>Fiber optics technology is a technology that uses glass threads to transmit data. </u></em>A fiber optic cable is made of a bundle of glass threads each capable of transmitting messages modulated onto light waves.
This technology has a number of advantages over electrical transmission which includes;
- <em><u>Extremely high band width; it can transmit a higher volume of data per unit time compared to other means.</u></em>
- <em><u>Long distance; data can be transmitted over long distance compared to copper cables.</u></em>
- <em><u>It has allowed faster transmission of data such as internet signals.</u></em>
- <em><u>Low security risk and</u></em>
- <em><u>Resistance to electromagnetic interference among others.</u></em>
The sine of an angle is (opposite side) / (hypotenuse) .
Multiply each side by (hypotenuse, and you have
Opposite side = (hypotenuse) x (sine of the angle) .
Sin(12°) = 0.2079...
Opposite side = (52 m) x (0.2079)
= 10.81 meters .