At what temperature would the root mean square speed of oxygen molecules, O2, be if oxygen behaves like an ideal gas? The mass of one O2 molecule is 5.312 × 10-26 kg, and the Boltzmann constant is 1.38 × 10-23 J/K
A) 0.251 K
B) 2090 K
C) 6270 K
D) 1.52 × 1023 K
A
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The cosmic background radiation corresponds to a blackbody at a temperature of 2.726 kelvins
a. True b. False Indicate whether the statement is true or false
The index of refraction for red light in water is 1.331 and for blue light is 1.340 . If a ray of white light enters the water at an angle of incidence of 83.00°, what are the underwater angles of refraction for the blue and red components of the light?
The accelerating force of the wind on a small 250-kg sailboat is 707 N northeast. If the drag of the keel is 500 N acting west, what is the acceleration of the boat?
a. 1.5 m/s2 due east c. 3.0 m/s2 northeast b. 2.5 m/s2 due north d. 2.0 m/s2 due north
A Christmas ornament made from a thin hollow glass sphere hangs from a small hook at its surface. It is observed to oscillate with a frequency of 2.50 Hz
What is the radius of the ornament? The moment of inertia of a hollow sphere of mass M and radius R about a point on its edge is 5MR2/3. A) 1.84 cm B) 3.68 cm C) 2.39 cm D) 3.98 cm E) 4.69 cm