For a pair of dice, how many microstates are there that result in the macrostate of rolling a 7?
a. 1
b. 5
c. 6
d. 7
e. 36
c
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The human body can withstand an acceleration of 10 g under certain conditions. What net force would produce this acceleration for a 50-kg person?
A) 500 N B) 2500 N C) 5000 N D) 25,000 N E) none of the above
How can astronomers measure the composition of an extrasolar planet's atmosphere?
A) by measuring how brightly the planet glows in infrared light B) by measuring the Doppler shift of the host star C) by comparing spectra for when the planet is in transit or eclipse with spectra taken at other times D) by measuring the composition of the host star; the planet must have formed from the same initial material
A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current of 24 A distributed uniformly across its cross section. A long wire which is coaxial with the cylinder carries an equal current in the opposite direction. What is the magnitude of the magnetic field 3.0 mm from the axis?
a. 0.82 mT b. 0.93 mT c. 0.70 mT d. 0.58 mT e. 0.40 mT
If you add 700 kJ of heat to 700 g of water at 70.0°C, how much water is left in the container? The latent heat of vaporization of water is 22.6 × 105 J/kg
A) 429 g B) 258 g C) 340 g D) 600 g E) none