It is possible that life exists on orphan planets, even though they do not orbit a star
Indicate whether the statement is true or false
TRUE
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The upper limit to the mass of a white dwarf is 1.4 solar masses
Indicate whether the statement is true or false
As measured from the Earth, a spacecraft is moving at speed 0.80c toward a second spacecraft moving at speed 0.60c back toward the first spacecraft. What is the speed of the first spacecraft as viewed from the second spacecraft?
a. 0.81c b. 0.95c c. 0.38c d. 0.20c
The ________ represents the complete range of frequencies of light energy from radio waves to cosmic rays
A) electromagnetic spectrum B) electron configuration C) probability cloud D) frequency dependence E) spectroscopic model
Which of the following wavelengths is common to a 10 cm tube open at both ends and a 15 cm tube open at one end and closed at the other?
1.60 cm 2.30 cm 3.20 cm 4.15 cm 5.5 cm 6.Two of the above 7.Three of the above 8.None of the above