What observation made of other stars seems to suggest the solar nebula theory is correct?
a. Stars are found to exist more often in binaries than by themselves.
b. Protostars are seen to radiate much of their light at infrared wavelengths.
c. Nearby stars tend to be low-mass red dwarfs.
d. Young stars are found to have hot disks that surround them.
d
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Conversion of Units: Express 50 mi/h in units of meters per second. (1 mi = 1609 m)
A. 49 m/s B. 2.2 m/s C. 22 m/s D. 45 m/s
We say that the Moon is gibbous when
A) it appears to be more than half illuminated, but not full. B) it appears to be less than half illuminated, but not new. C) it is exactly half illuminated. D) we see a thin crescent of light. E) the Moon is visible in the morning.
A hollow cylindrical (inner radius = 1.0 mm, outer radius = 3.0 mm) conductor carries a current of 80 A parallel to its axis. This current is uniformly distributed over a cross section of the conductor. Determine the magnitude of the magnetic field at a point that is 2.0 mm from the axis of the conductor
a. 8.0 mT b. 3.0 mT c. 5.3 mT d. 16 mT e. 1.2 mT
The direction of the rotation of Venus is exceptional because it is in a(n) ________ direction
Fill in the blank(s) with correct word