Answer:
Explanation:
Speed of light is the product of its wavelength and frequency, expressed as
S=fw
Where s represent speed, f is frequency while w is wavelength
Making f the subject of the formula then
f=s/w
Substituting 2.99x10^8 m/s for s and 3.012x10^-12 m for w then
Therefore, the frequency equals to
The answer to this question is dropping it on a hard surface.
Answer:
The electrical resistance of an object is a measure of its opposition to the flow of electric current.
Answer:
Explanation:
The Work-Energy Theorem is applied herein:
The number of turns needed to stop the grindstone is:
![n = \frac{(15\,kg)\cdot (0.186\,m)^{2}\cdot [(1.83\,\frac{rev}{min} )\cdot (\frac{2\pi\,rad}{1\,rev} )\cdot (\frac{1\,min}{60\,s} )]^{2}}{4\cdot (0.80)\cdot (8.82\,N)\cdot(0.186\,m)\cdot 2\pi}](https://tex.z-dn.net/?f=n%20%3D%20%5Cfrac%7B%2815%5C%2Ckg%29%5Ccdot%20%280.186%5C%2Cm%29%5E%7B2%7D%5Ccdot%20%5B%281.83%5C%2C%5Cfrac%7Brev%7D%7Bmin%7D%20%29%5Ccdot%20%28%5Cfrac%7B2%5Cpi%5C%2Crad%7D%7B1%5C%2Crev%7D%20%29%5Ccdot%20%28%5Cfrac%7B1%5C%2Cmin%7D%7B60%5C%2Cs%7D%20%29%5D%5E%7B2%7D%7D%7B4%5Ccdot%20%280.80%29%5Ccdot%20%288.82%5C%2CN%29%5Ccdot%280.186%5C%2Cm%29%5Ccdot%202%5Cpi%7D)
Answer:
The paper does not catch fire when wrapped around aluminium pipe because aluminium absorbs the heat, so paper does not attain its ignition temperature.
Explanation:
