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Thanks i got itA geostationary satellite moves above the equator in the same direction as earth's rotation with a period of 24 hours. It orbits 36000 km above the surface of the Earth.
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Thanks i got itA geostationary satellite moves above the equator in the same direction as earth's rotation with a period of 24 hours. It orbits 36000 km above the surface of the Earth.
okay..and on the decreasing part of the graph(V against x) ..would the gradient would be a curve or a line with positive gradient??E = -dV/dx - use the gradient of electric potential graph to plot the graph for electric field strength.
Curve, with a negative gradient(which decreases).okay..and on the decreasing part of the graph(V against x) ..would the gradient would be a curve or a line with positive gradient??
It is actually the P.E that is 3.2mJ
But we use K.E formula because
K.E + P.E = constant at any instant [Law of conservation of energy]
Hope you got the point!
It changes 3000 times per second because the frequency of signal is 3kHz. The frequency of carrier wave changes in synchrony with displacement of the signal. . .A sinusodial carrier wave has amplitude 12 volts and frequency 600 kHz.
The frequency of the carrier wave changes by 25 kHz per volt.
The carrier wave is to be used for the transmission of a signal of frequency 3 kHz and amplitude 2 volts.
For the frequency modulated carrier wave, state
1) the amplitude
2) the maximum frequency
3) the minimum frequency
4) the number of times per second that the frequency of the carrier wave changes from the maximum to minimum and then back to maximum value.
how to solve part 4 ?
Some devices in our homes work on direct current, so a.c has to be rectified & smoothed before it's use to run electrical devices.one disadvantage of using ac current
im nt abl to post the link PLEASE smbdy help in q.3 (b)(ii) w08 p4!!! plsss
The marking scheme i had in that the que and ms values were diff. thanks for the correct ms bt i need to know the way R --> P is calculaed?Q2 (b) (iii) the last line (R --> P)
wel i can guess some
it has been said in the above part of the question that the needle is oscilating with a maximaum(total) ditance of 22mm.
and we know that the formula fr measuring the displacement(x) of the oscillating object is X= Xo(coswt)
here Xo is the maximum displacement frm mean position!!
so in the case y =acoswt
a is the maximum displacement (amplitude)
total distance as stated is 22mm so the amplitude will be itx half (22/2)
=11mm
fr second part we are to calculate the angular velociTy, w
the frmula is w = 2πf
w= 2π(4.5) f= 4.5 as stated in question w= 28.3 Ans
its givn y=acos wt in the qs when actually it is y=asin wt?????????????? isnt it??
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