Calculate the ground state energy of a harmonic oscillator with a classical frequency of 3.68 × 1015 Hz. (1 eV = 1.60 × 10-19 J, h = 1.055 × 10-34 J ? s, h = 6.626 × 10-34 J ? s)
A) 7.62 eV
B) 15.2 eV
C) 11.4 eV
D) 5.71 eV
A
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Stellar parallax is the shift seen across a baseline of 2 AU rather than 1 AU
Indicate whether the statement is true or false
If a cord has negligible mass, the force exerted at one end is transmitted undiminished to each adjacent piece of cord along the entire length to the other end
Indicate whether the statement is true or false
An airplane flying horizontally with a speed of 500 km/h at a height of 800 m drops a crate of supplies (see the following figure). If the parachute fails to open, how far in front of the release point does the crate hit the ground?
What will most likely be the long-term future of the MWG?
(More than one answer possible.)
A.In a few trillion years, all the stars, gas, and dust of the MWG will be consumed by the supermassive black hole at the galaxy's core. This will be a bad day.
B.As time goes by there will be greater and greater enrichment of the heavier elements. Stars that form from the enriched ISM will have higher levels of metallicity.
C.In a few billion years, the MWG and Andromeda galaxy (M31) will merge. During the merger, great tidal streams of stars will be drawn out of both galaxies. Ultimately, the two spiral galaxies will blend into a single galaxy.