The value 1.38 × 10^?23 J/K is known as:
a. the universal gas constant. b. Boltzmann's constant.
c. Avogadro's number. d. the molar specific.
b
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Consider a Carnot cycle starting at the state of highest pressure and smallest volume. Call the isothermal expansion that starts at this state step 1, the adiabatic expansion which follows step 2, the isothermal compression that then follows step 3, and the adiabatic compression which returns the system to the initial state step 4 . In which step does the entropy of the system increase?
a. 1 b. 2 c. 3 d. 4
Consider a situation where two moving objects collide, stick to each other, and move off together. Linear momentum is definitely conserved
Indicate whether the statement is true or false
A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = ?2.3 N/C, Ey = Ez = 0. If the position and velocity of the particle at t = 0 are given by x = y = z = 0 and vz = 20 m/s, vx = vy = 0, what is the distance from the origin to the particle at t = 2.0 s?
A. 60 m B. 54 m C. 69 m D. 78 m E. 3.2 m
Equal wavelength waves of amplitude 0.25 m and 0.10 m interfere with one another. What is the resulting minimum amplitude that can result?
a. 0.15 m c. 0 m b. 0.10 m d. –0.40 m