If the temperature of a volume of ideal gas increases for 100°C to 200°C, what happens to the average kinetic energy of the molecules?

a. It halves. b. It doubles.
c. It increases but less that double. d. It increases more than double.


c

Physics & Space Science

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A block is projected with speed v across a horizontal surface and slides to a stop due to friction. The same block is then projected with the same speed v up an incline where is slides to a stop due to friction. In which case did the total mechanical energy of the block decrease the least?

a. This problem cannot be solved since it was not indicated whether the horizontal surface and the incline both had the same coefficient of kinetic friction. b. The case on the horizontal surface had the least decrease in total mechanical energy. c. The case on the inclined surface had the least decrease in total mechanical energy. d. In both cases the decrease in mechanical energy was the same.

Physics & Space Science

A charged particle (mass = M, charge = Q > 0) moves in a region of space where the magnetic field has a constant magnitude of B and a downward direction. What is the magnetic force on the particle at an instant when it is moving horizontally toward the north with a speed V?

a. QVB toward the east b. Zero c. QVB toward the west d. QVB upward e. QVB toward the south

Physics & Space Science

Applying the Tragedy of the Commons principle to the human population of Earth, we might phrase it "population growth and consumption benefit the few, while the costs are borne by all of society

" What evidence is there supporting this view? What evidence is there contradicting this view?

Physics & Space Science

One time constant after an RL circuit has its switch closed, how does the current I in it compare to the maximum current Imax that occurs for this circuit?

a. I > Imax/2 b. I = Imax/2 c. I < Imax/2 d. Without knowing R and L, this cannot be determined.

Physics & Space Science