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When white wave passes by a semi-transparent solid, or liquid or gas, it's spectrum have certain dark lines or bands, such spectrum is known as absorption spectrum (of the substance by which light is passed).
(i) Substances in atomic state produce line absorption spectra. Polyatomic substances such as H2, CO2 and KMnO4 produce band absorption spectrum.
(ii) Absorption spectra of sodium vapor have two (yellow lines) wavelengths D1 (5890Å) and D2(5896 Å)
Formers used for winding coils are ceramic or glass, because they are stable. Copper wire with silver plating is used up to 50 M Hz. Lit wire produces lower RF resistance than soli
CPH has mass and velocity. What is its De Broglie wavelength? Answer; since I told before, the wavelength of CPH is equal of electromagnetic wavelength when it is growing.
gauss law
Q. Two wires of same material and same length have resistances 5 and 10 respectively. Find the ratio of radii of the two wires. R = ρl / A = ρl / πr 2 R 1 = ρl / A = ρl
a transformer has a primary coil with 200 turns, and a secondary coil with 2000 turns. The input voltage is 120 VAC, and runs at 1800 watts. What is the output voltage?
If and show that they constitute a possible electromagnetic field.
what is elastic collision
Neutron is a fundamental particle carrying: (1)A charge of +1 unit and a mass of 1 unit (2)No charge and a mass of 1 unit (3)No charge and no mass (4) A charg of -1
A spring is held vertically downward and a current is passed through it . Then the length of the spring : A . increases B. decreases C . does not change D the spring osc
Satellite Motion A satellite is acted upon through the force of gravity and this force does accelerate it towards the Earth. Within the absence of gravity a satellite would mov
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