Using the velocity transformation formula, calculate the speed in the "rest frame" of a particle which is seen to be moving at c in a "moving frame"
What will be an ideal response?
u = (v+u')/(1+vu"/c2 ) = (v+c)/(1+vc/c2 ) = c(v+c)/(c+v) = c
Light speed in one frame will be light speed in all inertial frames.
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A candle emits what kind of spectrum?
A. blueshifted B. emission-line C. absorption-line D. continuous E. redshifted
An H-R diagram for a globular cluster will show a horizontal branch—a line of stars above the main-sequence but to the left of the subgiants and red giants. Which of the following statements about these horizontal branch stars is true?
A) They have inert (non-burning) carbon cores. B) Their sole source of energy is hydrogen shell burning. C) They generate energy through both hydrogen fusion and helium fusion. D) In a particular star cluster, all horizontal branch stars have the same spectral type.
What letters are commonly used to designate the subshells L = 0, 1, 2, 3, and 4?
What will be an ideal response?
The element barium should produce compounds most similar to those of
a. sodium. b. nitrogen. c. carbon. d. calcium.