Why is spectral intensity not diminished by the distance from the source of radiation?
What will be an ideal response?
Spectral intensity refers to radiation affected by temperature and wavelength or
frequency and not by distance from the source. Therefore it is not diminished by
the distance from the source.
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The electronegativity of the inert-gas atoms is equal to:
(a) undefined (b) 0 (c) 1 (d) 2
Radioactive Decay: Given that the half-life for radium-226 is 1600 y, how long is the "quarter-life" (that is, the time for the radiation to decay to one-fourth of its initial level)?
Fill in the blank(s) with the appropriate word(s).
The principle of conservation of momentum
A. is valid only for perfectly inelastic collisions B. is valid only for perfectly elastic collisions C. is valid for all collisions D. is valid only if the net external force acting on the system is zero E. states that it is impossible to change the momentum of an object
A rectangular coil of 100 turns measures 40.0 cm by 20.0 cm. This coil is placed next to an electromagnet which is switched on, increasing the magnetic field through the coil from zero to 0.800 T in 50.0 ms. If the resistance of the coil is 2.0 ohms, what are the induced voltage and current in the coil?