A rigid cylinder (15 cm radius, 15 cm height) contains nitrogen gas 
at standard temperature and pressure. What is the total translational kinetic energy of the gas molecules in the cylinder?
A. 1.6 kJ
B. 0.51 kJ
C. 0.86 kJ
D. 2.7 kJ
D. 2.7 kJ
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An object 3.4 mm tall is placed 25 cm from the vertex of a convex spherical mirror. The radius of curvature of the mirror has a magnitude of 52 cm. (a) How far is the image from the vertex of the mirror? (b) What is the height of the image?
What will be an ideal response?
Most of the carbon dioxide on the Earth
A) is dissolved in the oceans, forming carbonate rocks B) has frozen out in the polar regions C) has escaped into space D) is still present in the atmosphere
The greenhouse effect is the
A) generation of heat in the outer layers of the Earth's atmosphere due to absorption of short wavelength radiation B) generation of heat in the ozone layer due to the absorption of ultraviolet radiation C) release of heat by volcanism along tectonic plate boundaries D) trapping of infrared radiation from the Earth's surface by greenhouse gases like carbon dioxide, methane, and water
The position of a cart that is oscillating on a spring is given by the equation x = (12.3 cm) cos[(1.26 s-1)t]. When t = 0.805 s, what are the (a) velocity and (b) acceleration of the cart?
What will be an ideal response?