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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.
The rod is moving in the +x-direction with a speed of 6.80m/s . The rod is in a uniform magnetic field B: (0.160T)i - (0.300T)j - (0.090T)k What is the magnitude of the emf induced in the rod?
A charged capacitor with C = 630uF is connected in series to an inductor that has L = 0.400H and negligible resistance. At an instant when the current in the inductor is i = 1.40A, the current is i
A helium neon laser emits light that has a wavelength of 632.8 nm. The circular aperature through which the beam emerges has a diameter of 0.800 cm. Estimate the diameter of the beam 20 km from the
calculate the fractional intensity I/IMAX at a point on the screen 4.10mm from the center of the principal maximum.
Assume that the speed of the water in the reservoir is zero and that the water flow is steady. Ignore both air resistance and the height difference between the reservoir and the muzzle.
Ignore the specific heat capacity of the chest and determine the final temperature T of the soda and watermelon.
The plates of a Fabry-Perot interferometer have a reflection coefficient r = 0.99. Calculate the minimum resolving power R and the plate separation that will accomplish the resolution of the two com
A positron (e+) in a thin wire can be considered as if in a 1- dimensional infinite potential well. Consider L = 0.005 mm length of the wire; (a) Determine the ground-state energy of a positron in s
What is Bragg Scattering angle ? (first order)for an electrons beam scattered / diffracted from the surface of Ni crystal with atomic- planes spacing D= 0.215 nm and the kinetic energy of the electr