Which of the following is left behind when a star dies?
A) A black hole
B) A red giant
C) A gray dwarf
D) A yellow node
A
Physics & Space Science
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Hydrogen lines are strongest in class A stars
Indicate whether the statement is true or false
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Draw and label a simple diagram of the following:
a. a refracting telescope b. a reflecting telescope What will be an ideal response?
Physics & Space Science
Convert 14°C to K
A) 46 K B) 100 K C) 187 K D) 287 K E) 474 K
Physics & Space Science
Waves propagate at 4.0 m/s along a stretched string. The end of the string is vibrated up and down once every 3.0 s. What is the wavelength of the waves that travel along the string?
a. 3.0 m c. 6.0 m b. 12 m d. 2.7 m
Physics & Space Science