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What is the speed of a longitudinal wave in argon at 293 K?
A standing wave of frequency 1100 Hz in a column of methane at 293 K produces nodes that are 20 cm apart.
.The molar mass of iodine is 127 g. A standing wave in iodine vapor at 400 K produces nodes that are 6.77 cm apart when the frequency is 1000 Hz.
An open glass tube of uniform cross-section is bent into the shape of an L. One arm is immersed in a liquid of density p, and the other arm of length I remains.
Prove that the number of particles striking a unit area of the wall of the container in unit time is equal to N(w)/4V .
In practice, r cannot be made greater than about 10, because if r is larger, then the rise in temperature upon compression of the mixture of gasoline .
The compression ratio of a diesel engine is much larger than that of a gasoline engine, because there is no preignition as only air is being compressed.
All processes are quasi-static, and Cr is constant. Prove that the thermal efficiency of an engine performing this cycle.
Prove that the thermal efficiency of an engine performing this cycle.
Assuming constant heat capacities, show that the thermal efficiency is ? =1 - ? (V1/V2)-1 / (P3/P2) - 1.
Indicate which parts of the cycle involve heat flow into the gas, and calculate the amount of heat flowing into the gas in one cycle.
The helium is now expanded adiabatically to 3 K. How much work is done, and what is the new internal energy?
The battery remains at constant temperature by receiving heat from the outside air.
If the body remains at constant pressure, show that the time for the temperature of the body to change from TI to T2.
Completely surrounding the helium can are walls maintained at the temperature of liquid nitrogen (77.35 K).
Assuming that all the energy supplied was radiated and that the radiation from the glass tube is negligible, calculate the melting temperature of copper.
The solar constant is the incident energy per unit of time on a unit area of a surface placed at right angles to a sunbeam just outside the earth's atmosphere.
A stream of air moves with a speed w. Assume that a mass m of air is stopped adiabatically by an obstacle.
What is the height of the air column when mercury starts to spill over the top of the cylinder?
Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end.
A cylindrical cocktail glass 15 em high and 35 cm2 in cross section contains water up to the 10-cm mark.
What temperature must the air in the larger bulb be raised in order that the pressure be doubled?
A thick-walled insulated metal chamber contains ni, moles of helium at high pressure Pi.
Prove that the work done by an ideal gas with constant heat capacities during a quasi-static adiabatic expansion.