Telescopes observing in the far ultraviolet can work from high-flying aircraft
Indicate whether the statement is true or false
F
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Having nothing to do with trigonometry, ________ parallaxes use the width of absorption lines to estimate the star's luminosity and size and distance
A) bolometric B) photometric C) spectroscopic D) holographic E) videometric
What is the de Broglie wavelength for a proton (m = 1.67 × 10^?27 kg) moving at a speed of 2.9 × 10^6 m/s? (h = 6.63 × 10^?34 J?s)
a. 6.84E–14 m b. 2.06E–14 m c. 2.29E–13 m d. 1.37E–13 m e. 3.82E–13 m
Why does light follow the Inverse Square Law?
A: Every object that emits light has some intrinsic brightness (luminosity) but its apparent brightness changes with distance B: An object emits light in all directions around it and the light is diluted through spheres around the light source C: The intensity of the light drops off with the square of the distance D: The inverse square comes from the 3D nature of space around a light source E: All of the above
The Balmer series is formed by electron transitions in hydrogen that
A) are between the n = 1 and n = 3 shells. B) end on the n = 2 shell. C) end on the n = 1 shell. D) begin on the n = 1 shell. E) begin on the n = 2 shell.