Describe the distance and composition of the Alpha Centauri system
What will be an ideal response?
The Alpha Centauri system is composed of three stars. This system includes the closest star to Earth (other than the Sun). The closest star is called Proxima Centauri and has a parallax of 0.77 arc second which is 1.3 pc or 4.3 light-years.
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Explain why it would be better to obtain stellar parallax for stars if we could observe from the planet Mars instead of the Earth
What will be an ideal response?
The resolving power of a telescope is affected by the property of light called
A. refraction. B. attenuation. C. diffraction. D. reflection. E. seeing.
A woman walks briskly at 2.0 m/s how much wile will it take her to walk one mile?
A. 8.3 min B. 13.4 min C. 21.7 min D. 30.0 Min
A violin with string length 32 cm and string density 1.5 g/cm resonates with the first overtone from a 2.0-m long organ pipe with one end closed and the other end open. What is the tension in the string?
A) 1000 N B) 110 N C) 450 N D) 4100 N E) 56 N