Answer:
AM(amplitude modulation) and FM(frequency modulation)
Explanation:
A radio frequency band is a small adjacent section of the radio spectrum frequencies, whereby channels are usually used or set aside to be used.
They are usually of two different bands called AM which is known as amplitude modulation and FM which is known as frequency modulation
Answer:
please give me brainlist and follow
Explanation:
Formula for number of images formed by two plane mirrors incident at an angle θ is n = 360∘θ. If n is even, the number of images is n-1, if n is an odd number of images.
The angles of incidence with respect to the normal will the x-rays reflect from the crystal will be
16.60 degrees. Given: wavelength of X-rays, λ= 0.120 nm
Distance, d=0.21 nm
According to Bragg’s diffraction law: nλ = 2dsinθ
thus, 0.120 = 2*0.21sinθ
or θ =
(0.120/2*0.21)
or θ = 16.60 degrees.
Radon is a radioactive element which give alpha rays= HeRn→ Po +<span>He
</span>you can use the measurement of radio activity intensity of the alpha rays to give you an idea of the amount of Radon
Answer:
It's Ptolemy
Explanation:
He thought the Earth was the universe's center and everything revolved around us.