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For the isomerization of n-butane to isobutene we have G= -RT LnK where R= 1.9872 and K= (isobutene)/(n-butane) The temperature dependent Gibbs free energy (in calories) for isobutene and nbutane ar
A 1900 kg car rounds a curve of radius 70 m banked at an angle of 12 °. What is the magnitude of the friction force required for the car to travel at 86 km/h
At what point on the x-axis is the magnetic field zero if the two currents are in the same direction?
The Fermi level lies 0.520 eV above the valence band in a sample of silicon at 300k. This should be a p type material. Find the majority and minority carrier concentrations.
What is the anguar momentum of the disk if it rotates about a parallel axis through its perimeter at the same angular velocity?
A 8.5 kg object undergoes an acceleration of 2.3 m/s2. a) What is the magnitude of the resultant force acting on it?
If you assume the atmosphere to be pure carbon dioxide, calculate the compressibility factor at the surface of Venus. Also determine the volume of 10 kg of carbon dioxide vapor at the surface of Ven
The final pressure is 1 bar. Determine the final temperature and volume if the exergy destruction is 15 kJ. Is the ammonia before or after this process an ideal gas? Give your answers and your reaso
A heat transfer from the system also occurs at a temperature of 1000 K. There are no other heat transfers. If no internal irreversibilities are present, determing the thermal efficiency.
If the inlet is at the above pressure and saturated vapor, calculate the isentropic efficiency if the exit is at 1 bar and quality X = .75.
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 6.12 m and, in starting, rotates according to Theta = 0.30 t 2. where t is in seconds and Theta is in radians. t = 5.42 s
A wheel (radius 0.6 m) is rolling on a horizontal surface with a center of mass acceleration of 0.7 m/s2. If the force applied to the center of the wheel is 44.903 N and the wheel has a mass of 6.44
Suppose that you save for retirement by contributing the same amount each month from your 25th birthday until your 65th birthday, in an account that pays a steady 6% annual interest, compounded mon
The air above water is cooled as a result of the water absorbing heat from the air. The density of air is 1.29 kg/m3 and the specific heat of air is 1000 J/kg oC. How large a volume of air would be c
Fixed to the origin is a charge q = -0.320 nC. Is there a location, including the effects of gravi- ty, where a proton can be in equilibrium? Explain. If so, what is that location and is it a stable
A certain black box contains unknown resistances and sources of emfs connected in an unknown way such that (1) a 10 n resistor accrpss the terminals draws 1.0A and (2) and 18n resistor draws .60A. W
What is the current throught the ammeter? What is the direction of current through the inner solenoid compared to the outer? Is it in the same or the opposite direction?
A) What time interval must the synchronized space station clocks register between the shuttle's departure from earth and its arrival at Pluto if the advertisement is true? B) what is the shuttle's
To obtain maximum magnification and an image that can be seen clearly by a normal eye, where should the object be placed?
At what frequency should this cord be vibrated such that a n-10 standing wave is produced?
How far from the slide should the lens of the projector be placed to form the image on the screen?
Light of wavelength 550nm is incident normally on a diffraction grating. The seventh order maximum of the diffraction pattern is observed at 32 degrees. a) What is the density of the rulings per cm
A 137Cs source has an activity of 700 (micro)Ci. A gamma photon with energy 0.662 MeV is emitted with a frequency of 0.849 per decay. At a distance of 2 meters from the source, what is (A) the expos
Assuming theta = 44.9 and the base of the prism is mirrored, determine the angle made by the out going ray with the normal to the face of the prism.