The diagram below shows the radial velocity curve of a double-line spectroscopic binary. Based on this radial velocity curve, which of the following statements is correct?
a.
Star A is twice the mass of star B.
b.
Star B is twice the mass of star A.
c.
Star A is ten times the mass of star B.
d.
Star B is ten times the mass of star A.
e.
Star A and Star B have the same mass.
B
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Double-Slit Interference: A two-slit arrangement with 60.3 ?m separation between the slits is illuminated with 537.0-nm wavelength light. If a viewing screen is located 2.14 m from the slits, find the distance on the screen from the first dark fringe on one side of the central maximum to the second dark fringe on the other side.
A. 57.2 mm B. 38.1 mm C. 76.3 mm D. 26.9 mm
Where would you least expect to find an ionization nebula?
A) in the galactic disk B) near a hot, young star C) in a spiral arm D) in the halo of our galaxy
Assume that a uniform magnetic field is directed into this page. If an electron is released with an initial velocity directed from the bottom edge to the top edge of the page, which of the following describes the direction of the resultant force acting on the electron?
a. out of the page b. to the right c. to the left d. into the page
Stars of what magnitude are just barely visible to the unaided eye?
a. 4 b. 6 c. 2 d. 0