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In a steam turbine, steam is flowing at 20kg/s. At the inlet of the turbine, specific enthalpy is 2800kJ/kg, velocity 20m/s and heigh is 2m. At the outlet, specific enthalpy is 1900kJ/kg, velocity is 150m/s and the height is 0m. In addition, from this turbine, 300kJ/s of heat is being released. Obtain the turbine output power. (the effective work the turbine does per second).
A 1000 kg airplane touches down on an icy runway, heading northward at 110 km/h. Find the speed and direction of the combined wreckage
a rock is tossed off the top of a cliff of height 34.5m. its initial speed is 29.1m/s and the launch angle is 30.2degrees with respect to the horizontal. what is the speed with which the rock hits the ground
You see lightning strike a mountaintop, and 2.98 s later you hear the accompanying thunder. How far away is the mountaintop
In a lightning bolt, a large amount of charge flows during a time of 2.1 x 10-3 s. How much charged has flowed during the lightning bolt?
An additional magnetic field, horizontal and to the right, of 0.3 T is turned on. What are the magnitude and direction of the torque vector on the loop?In Nm
A spring with spring constant k is attached to mass M. The spring is horizontal and mass M sits on a horizontal frictionless table. Find the equilibrium position of the masses
A sodium surface, which has a work function of 2.46eV is illuminated with a wavelength = 300nm light. What is the deBroglie wavelength of these electrons
q1. a car takes 9 s to go from v 0 to v 55 ms at about constant acceleration. if you wish to find out the distance
Light of wavelength 470 nm in air enters a fishbowl filled with water, then exits by the crown-glass wall of the container. Find the wavelengths of the light (a) in the water and (b) in the glass.
The drawing illustrates the dispersion of light by a prism. The prism is made from a certain type of glass, Find the angles of refraction at which the violet rays emerge into the air from the prism
A 5.0 kg bundle starts up a 30° incline with 128 J of kinetic energy. How far will it slide up the plane if the coefficient of friction is 0.40
A vertical solid steel post of diameter = 21and length = 2.90 is required to support a load of mass = 8300 . You can ignore the weight of the post. Take free fall acceleration to be . 1) What is the stress in the post? 2) What is the strain in the po..
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