A mercury manometer measures a pressure of 200 mmHg. What is this pressure in atm?
A. 0.204
B. 0.263
C. 0.301
D. 0.325
E. 0.375
B. 0.263
Physics & Space Science
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What is the approximate mass of a 1-cm2 column of air that extends from sea level to the top of the atmosphere?
A) 1 g B) 1 kg C) 10 kg D) 100 kg
Physics & Space Science
As a star like the Sun exhausts hydrogen in its core, the outer layers of the star become hotter and more luminous
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
Explain how the shifting spectral lines of spectroscopic binaries let us find their periods
What will be an ideal response?
Physics & Space Science
A laser beam strikes a plane mirror's reflecting surface with an angle of incidence of 43°. What is the angle between the incident ray and the reflected ray?
A) 43° B) 86° C) 45° D) 90° E) 0°
Physics & Space Science