Answer:
B. X-rays
Explanation:
From the given choices, x-rays will have the highest energy of the given waves.
The energy of electromagnetic waves is highly dependent on their frequency and wavelength.
Electromagnetic waves with a high frequency and small wavelength will have higher energy compared to those with low frequency and high wavelength.
X-rays are one the most energetic waves on the periodic table. They have a very high frequency and low wavelength.
I think the answer is A.........
Answer:
frequency or wavelength
Explanation:
this is why the electromagnetic spectrum has a decreasing wavelength and increasing frequency
No, not exactly. They jiggle and tremble and vibrate a lot, but
they always basically stay in very nearly the same place.
It's like if you're allowed to go anywhere you want in your jail cell,
you wouldn't exactly call that "moving about freely".
Answer:
The minimum inductance needed is 2.78 H
Explanation:
Given;
frequency of the AC, f = 26.5 Hz
the root mean square voltage in the circuit,
= 41.2 V
the maximum current in the circuit, I₀ = 126 mA
The root mean square current is given by;
![I_{rms} = \frac{I_o}{\sqrt{2} } \\\\I_{rms} = \frac{126*10^{-3}}{\sqrt{2} }\\\\I_{rms} =0.0891 \ A](https://tex.z-dn.net/?f=I_%7Brms%7D%20%3D%20%5Cfrac%7BI_o%7D%7B%5Csqrt%7B2%7D%20%7D%20%5C%5C%5C%5CI_%7Brms%7D%20%20%3D%20%5Cfrac%7B126%2A10%5E%7B-3%7D%7D%7B%5Csqrt%7B2%7D%20%7D%5C%5C%5C%5CI_%7Brms%7D%20%20%3D0.0891%20%5C%20A)
The inductive reactance is given by;
![X_l = \frac{V_{rms}}{I_{rms}} \\\\X_l= \frac{41.2}{0.0891}\\\\X_l = 462.4 \ ohms](https://tex.z-dn.net/?f=X_l%20%3D%20%5Cfrac%7BV_%7Brms%7D%7D%7BI_%7Brms%7D%7D%20%5C%5C%5C%5CX_l%3D%20%5Cfrac%7B41.2%7D%7B0.0891%7D%5C%5C%5C%5CX_l%20%3D%20462.4%20%5C%20ohms)
The minimum inductance needed is given by;
![X_l = \omega L\\\\X_l = 2\pi fL\\\\L = \frac{X_l}{2\pi f}\\\\L = \frac{462.4}{2\pi *26.5}\\\\L = 2.78 \ H](https://tex.z-dn.net/?f=X_l%20%3D%20%5Comega%20L%5C%5C%5C%5CX_l%20%3D%202%5Cpi%20%20fL%5C%5C%5C%5CL%20%3D%20%5Cfrac%7BX_l%7D%7B2%5Cpi%20f%7D%5C%5C%5C%5CL%20%3D%20%5Cfrac%7B462.4%7D%7B2%5Cpi%20%2A26.5%7D%5C%5C%5C%5CL%20%3D%202.78%20%5C%20H)
Therefore, the minimum inductance needed is 2.78 H