A gas consists of particles of mass 3.00 × 10-26 kg. What is the pressure in a gas of these particles if there are 2.00 × 1025 particles per cubic meter of gas and the rms speed of the particles is 400 m/s?
A)
1.01 × 105 N/m2
B)
1.60 × 104 N/m2
C)
9.60 × 104 N/m2
D)
4.80 × 104 N/m2
E)
3.20 × 104 N/m2
E
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A spherical conducting shell has a uniform surface charge density of 
What is its radius if the electric field 1.5 m from its center is 17 N/C outward?
A. 3.9 cm B. 4.7 cm C. 3.2 cm D. 9.5 cm E. 6.4 cm
Which of the following can make a string of carbon atoms a living thing?
A) The ability of carbon to act as a living thing independently B) The ability of oxygen to act as a living thing when combined with carbon C) The transmission of information from one carbon molecule to another D) The transfer of electrons from one carbon molecule to another
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What will be an ideal response?
The average molecular translational kinetic energy of a molecule in an ideal gas is
A.
kBT.B.
RT.C.
kBT.D.
RT.E.
kBT, where n = number of internal degrees of freedom.