




Card 26 / 33:
extremely low frequency (ELF)
electromagnetic radiation with wavelengths usually in the range of 0 to 300 Hz, but also about 1kHz

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Questions & Answers
how to prove that Newton's law of universal gravitation F = GmM
______
R²
sir dose it apply to the human system
prove that the centrimental force Fc= M1V²
_________
r
prove that centripetal force Fc = MV²
______
r
Kaka
how lesers can transmit information
griffts bridge derivative
please explain; when a glass rod is rubbed with silk, it becomes positive and the silk becomes negative yet both attracts dust. does dust have third types of charge that is attracted to both positive and negative
what is a conductor
Timothy
no....I said below me ...... nothing below .....ok?
dust particles contains both positive and negative charge particles
Mbutene
corona charge can verify
Stephen
when pressure increases the temperature remain what?
CT scanners do not detect details smaller than about 0.5 mm. Is this limitation due to the wavelength of x rays? Explain.
The Critical Angle Derivation
So the critical angle is defined as the angle of incidence that provides an angle of refraction of 90degrees. Make particular note that the critical angle is an angle of incidence value. For the waterair boundary, the critical angle is 48.6degrees.
dude.....next time Google it
pls who can give the definition of relative density?
Temiloluwa
the ratio of the density of a substance to the density of a standard, usually water for a liquid or solid, and air for a gas.
Chidalu
it is the product of mass ×velocity of an object
Chidalu
how do I
highlight a sentence]p? I select the sentence but get options like copy or web search but no highlight. tks. src
then you can edit your work anyway you want
Wat is the relationship between Instataneous velocity
Instantaneous velocity is defined as the rate of change of position for a time interval which is almost equal to zero
Astronomy
The potential in a region between x= 0 and x = 6.00 m
lis V= a+ bx, where a = 10.0 V and b = 7.00 V/m.
Determine (a) the potential atx=0, 3.00 m, and 6.00 m
and (b) the magnitude and direction of the electric
ficld at x =0, 3.00 m, and 6.00 m.
Source:
OpenStax, College physics. OpenStax CNX. Jul 27, 2015 Download for free at http://legacy.cnx.org/content/col11406/1.9
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