the majority of the stars we see in the sky are
What will be an ideal response?
main sequence stars
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What kind of planets are most easily detected using the Doppler method?
A) high mass planets far from their host star B) low mass planets far from their host star C) low mass planets close to their host star D) high mass planets close to their host star E) planets that have been ejected from their systems
A mass of 355 g hangs from one end of a string that goes over a pulley with a moment of inertia of 0.0125 kg?m2 and a radius of 15.0 cm. A mass of 680 g hangs from the other end
When the masses are released, the larger mass accelerates downward, the lighter mass accelerates upward, and the pulley turns without the string slipping on the pulley. What is the acceleration of the masses? A) 2.00 m/s2 B) 3.82 m/s2 C) 2.87 m/s2 D) 5.74 m/s2 E) 7.78 m/s2
Compared to the spirals, elliptical galaxies tend to be more dusty
Indicate whether the statement is true or false
A flashlight draws 0.133 A from a 3.0-V battery pack. In 2.0 minutes
(a) how much charge flows from the battery, (b) how much energy does the battery supply, and (c) how many electrons have passed any point in the circuit every second?