What is the smallest mass a newborn star can have?
A) 8 times the mass of Jupiter
B) 80 times the mass of Jupiter
C) 800 times the mass of Jupiter
D) about 1/80 the mass of our Sun
E) about 1/800 the mass of our Sun
B
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Work-Energy Theorem: How much work must be done by frictional forces in slowing a 1000-kg car from 26.1 m/s to rest?
A. 3.41 × 105 J B. 2.73 × 105 J C. 4.09 × 105 J D. 4.77 × 105 J
Transformers: An ideal transformer has 60 turns on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary,(a) what voltage is present in the secondary?(b) what current is present in the secondary?
Fill in the blank(s) with the appropriate word(s).
Below is a radial velocity curve for a spectroscopic binary. Which of the stars is most massive? ____________________
The coefficient of static friction between Teflon and scrambled eggs is about 0.1. What is the smallest tilt angle from the horizontal that will cause the eggs to slide across the surface of a tilted Teflon-coated pan?
A. 0.002° B. 5.7° C. 15° D. 33° E. Other (specify)