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Show that the pressure exerted by a Fermi gas at absolute zero is
Consider a building whose annual air-conditioning load is estimated to be 120,000 kWh in an area where the unit cost of electricity is $.10/kWh.
The heating and airflow ducts to and from the room are circular 0.30m in diameter, the room is 3mx4.5x6m and the air flow needs to be changed every 12 minutes
Consider the system of 20g (0.1 mole) sample of liquid mercury at 1bar of pressure in an open beaker. Given the data below calculate the change in entropy
The speed of sound in ether (25 deg C, 1 atm) is 976 m/s. What is the wavelength in ether produced by a tuning fork oscillating at 1000 Hz?
A coil of 100 turns is penetrated by a flux of 0.050 Wb in 0.021 s. Determine the numerical value of the average induced emf.
Consider a sample of CaO(s) at 298K and 1 atm. Does the Gibbs energy of the sample increase, decrease of remain the same
A copper piece of mass 10g is suspended by a vertical spring. The spring elongates 1cm over its natural length to keep the piece in equilibrium.
How much work would be required to move a +50e-6 test charge from a point midway between them to a point closer to either of the charges?
On planet Tehar, the free fall acceleration is the same as that on Earth but there is also strong downward electric field with the field being uniform
A hot body cools from 90 degree celcius to 80 degree celcius in 5 minutes when placed in a room of temperature 30 deg C
Show that the decrease of amplitude is the same for each cycle of oscillation.
The air temperature above coastal areas is profoundly influenced by the large specific heat capacity of water. How large of a volume of air can be cooled
A person removes a 10.5 kg stereo amplifier from a shelf that is 1.82 m high. The amplifier is lowered at a constant speed to a height of 0.75 m.
Find by integration its moment of inertia about an axis perpencicular to the rod at its center of mass.
Consider a 2-level system with an energy splitting between the upper and lower level. Using Boltzmann statistics, show that the heat capacity of the 2-level
A 1.0x10^-3 kg spider is hanging vertically by a thread that has a Young's modulus of 4.5x10^9 N/m^2 and a radius of 13x 10^-6.
If the object barely floats, with the top surface ot the wood level with the surface of the water, find the ratio of the volumes, Vw/Va.
A piece of glass has a temperature of 85.4C. Liquid that has a temperature of 43.0C is poured over the glass, completely covering it, and the temperature
Assuming the block slides back down the plane, how fast will it be going when it returns to the bottom?
A 2-kW baseboard electric resistance heater in a vacant room is turned on and kept on for 15 min. The mass of the air in the room is 75 kg, and the room
The generator at a power plant produces AC at 24,000 Volts. A transformer steps this up to 345,000 Volts for transmission over power lines.
The specific heat of a gas at a constant pressure is 1.70 times the specific heat at a constant volume. Find the specific heat at a constant pressure.
A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.190 and the push imparts.
If the block, after coming to rest at B, slipped along BC, what is the velocity at C. ignore the friction along the surface BC and assume the bottom.