At the inlet of a steam turbine the following information are given: p=1000 kPa, T=500 deg-C, u = 3124.3 kJ/kg, v = 0.35411, V=20 m/s, z=10 m, and mdot=10 kg/s.

determine the inlet area.

Determine the flow work at the inlet in MW

Determine the rate of transport of flow energy (Jdot).

If you neglect ke and pe in the expression for j, how would the answer in part c change? in percentage

A 40.0-uF capacitor is connected to a 50.0-ohm resistor and a generator whose rms output is 30.0 V at 60.0 Hz.

Find...

A) the rms current circuit

B) the rms voltage drop across the resistor

C) the rms voltage drop across the capacitor

D) and the phase angle for the circuit

Please Explain how to get these answers, Thankyou

a. A camera has a lens with a focal length of 0.032 m. The camera is set to an f-number of 5.6. The shutter speed (the amount of time during which the aperture is open to expose the film) is set to 0.35 s. What is the diameter of the camera's aperture?

b. If the camera is focused on an object that is 0.39 m away from the lens, how far is the film behind the lens?

c. If the f-number is changed to 2.8, does that increase the amount of light hitting the film, decrease it, or leave it unchanged?
Increases it.
Does not change it.
Decreases it.

d. By what factor does the amount of light hitting the film change when the f-number is changed from 5.6 to 2.8?

e. If you wanted to adjust the shutter speed so that the amount of light falling on the film with an f-number of 2.8 was the same as it was for the original f-number and shutter speed, what shutter speed should you use?

f. If you want to focus the camera on a very distant object, how far must the lens be from the film?

Water is being pumped through a horizontal pipe that is 36.0 m long and 13.5 cm in diameter. A pump maintains a gauge pressure of 742 Pa at a large open tank at one end of the pipe. The other end of the pipe is open to the air. If this pipe is replaced by a second one of length 9 m and diameter 5.0 cm, what gauge pressure must the pump provide to give the same volume flow rate as for the first pipe?

1) Serious bicyclists say that if you reduce the weight of a bike, it is better to reduce it in the wheels rather than in the frame. Why would reducing weight in the wheels make it easier on the bicyclist than reducing the same amount on the frame? 2) Why is a tapered water glass with a narrow base easier to tip over than a glass with straight sides? Does it matter if the glass is full or empty? 3) Using Bernoulli’s theorem, explain how a plane can take off.

Define activation energy, half-life, and zeroth order reaction in your own words.

What is the purpose of having fuses or circuit breakers in electric circuits? How should they be connected in circuits so they will be effective?

A test rocket is launched, starting on the ground, from rest, by accelerating it along an incline with constant acceleration "a". The incline has length "L", and it rises at ? degrees above the horizontal. At the instant the rocket leaves the incline, its engines turn off and it is subject only to gravity, g?+9.81m/s2.  (Air resistance can be ignored). Taking the usual x-y coordinate system, with an origin at the top edge of the incline,  (a)what is the position vector when the rocket is at its highest point?  (b)What is the position vector when the rocket is on its way back down and once again at the same height as the top edge of the incline?  Your symbolic answer should only depend on a, L,?, g, and/or numerical factors Asked by

7. What is the energy released in the fission reaction    0¹n + 92²³⁵U ? 55¹⁴¹Cs + 37⁹²Rb + 3  0¹n? (The atomic mass of ¹⁴¹Cs is 140.920046 u and that of ⁹²Rb is 91.919729 u)   MeV

Unless otherwise stated, all objects are located near the Earth's surface, where g = 9.80 m/s2 .
At the end of most landing runways in airports, an extension of the runway is constructed using a special substance called formcrete. Formcrete can support the weight of cars, but crumbles under the weight of airplanes to slow them down if they run off the end of a runwa

If a plane of mass 1.80×10⁵ kg is to stop from a speed of 20.0 m/s on a 120 m long stretch of formcrete, what is the magnitude of the average force exerted on the plane by the formcrete?

What is the maximum angle of climb (steady velocity climb) for a turbojet powered aircraft with an (L?D)max equal to 10.5 and a gross weight of 8000 lb. if it is producing a thrust of 2000 lb.? If the aircraft using the same available thrust, wishes to establish a rate of climb equal to 1800fpm, what airspeed will it need to establish? (Assume the required thrust equals 764pounds)

a 5.00 kg ball, moving to the right at a velocity of 2.00 m/s on the frictionless table, collide head on with a stationary 7.50 kg ball. find the final velocities of the balls if the collision is elastic, completely inelastic the balls stick together

A thermos bottle in the shape of a cylinder has an inner radius of 4.0 cm, an outer radius of 4.5 cm, and a lengt of 30cm. The insulating walls have a thermal conductivity equal to 2.0 x 10^-5 cal/(sec-cm celsius). One liter of hot coffee at 90 degrees Celsius is poured into the bottle. If the outside wall remains at 20 degrees Celsius, how long does it take for the coffee to cool to 50 degrees Celsius?

The motion of a human body through space can be modeled as the motion of a particle at the body's center of mass as we will study in a later chapter. The components of the displacement of an athlete's center of mass from the beginning to the end of a certain jump are described by the equations

x_f = 0 + (10.8 m/s)(cos 18.5

If the coefficient of kinetic friction between tires and dry pavement is 0.75, what is the shortest distance in which you can stop an automobile by locking the brakes when traveling at 25.5 m/s ?