A 2.00 kg pendulum bob on a string 1.50 m long, is released with a velocity of 3.00 m/s when the support string makes an angle of 45.0 degrees with the vertical. What is the tension in the string at the bottom of the swing?
A. 53.5 N
B. 49.8 N
C. 43.1 N
D. 37.5 N
E. 30.2 N
C. 43.1 N
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Wien's Law: What is the surface temperature of a star, if its radiation peak occurs at a frequency of 1.06 × 1015 Hz? (c = 3.00 × 108 m/s, and the constant in Wien's law is 0.00290 m ? K)
A. 17,000 K B. 14,500 K C. 19,000 K D. 20,400 K E. 10,200 K
The radial velocity curve of a star with an extrasolar planet is a plot of
A) radial velocity against luminosity B) radial velocity against brightness C) radial velocity against distance D) radial velocity against time
Given the basic building blocks of planets are widespread and the same laws of physics operate everywhere, we would expect
A) we have not detected any other planetary systems so we have no way of knowing B) other planetary systems to be identical to our own with the same number and types of planets as our own solar system C) other planetary systems to be laid out in a similar manner to our own with inner rocky terrestrial planets and outer gaseous Jovian planets D) other planetary systems to be very different than our own because the detailed conditions that existed in our own solar nebula are unlikely to have been replicated elsewhere
Main sequence stars have radii ranging from about 0.03 solar radius to 30 solar radius
Indicate whether the statement is true or false