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Water flows through a 4-cm pipe, wrought iron, horizontal pipeline 50-m long from point A to B, and contains a fully opened gate valve and two elbows (R/D = 4). If the pressure downstream at B is 192 KPa and flow rate is 0.006 m^3/s, what is the pressure at point A?
In 1915, Henry Sincosky of Philadelphia suspended himself from a rafter by gripping the rafter with the thumb of each hand on one side and the fingers on the opposite side. Sincosky’s mass was 79 kg. If the coefficient of static friction between hand..
A constant force of 20 N is applied to an object of mass 7.5 kg at an angle of 22 degrees above the horizontal, What is the work done by the force on the object
Consider an electron in the ground state of the hydrogen atom, separated from the proton by a distance of 0.0529 nm. Viewing the electron as a satellite orbiting the proton in the electrostatic potential, calculate the speed of the electron in its ..
Consider an object attached to an ideal spring that oscillates according to the equation x=(34.0 cm) cos (8.10£) where £ is in seconds. what is the mechanical energy of the oscillations
What percentage of the neutrons would not interact if the concrete slab were made 45.0 cm thick? How many centimeters thick would the concrete need to be so that 12.0 per cent of the neutrons are transmitted.
A diver springs upward from a board that is three meters abovewater. At an instant he contacts the water his speed is 9.20 m/sand his body makes an angle of 78.0o with respect to the horizontalsurface of the water.
A force with a magnitude of 25 N and directed at an angle of 37° above the horizontal is used to move a 10-kg crate along a horizontal surface at constant velocity
A steel ball bearing 8.0 mm in diameter is dropped into a cylinder of glycerin. What is the terminal velocity of the ball bearing
Two thin rods of length L lie along the x-axis, one between x=a/2 and x=a/2+L and the other between x= - a/2 and x= - a/2 - L. Each rod has positive charge Q distributed uniformly along its length.
An RLC circuit has a resistance of 2 komega, a capacitance of 32 uF, and an inductance of 52 H. obtain the phase shift between the current and the voltage
A hunter who is a bit of a braggart claims that, from a distance of 1.5 km, he can selectively shoot either of two squirrels who are sitting 14 cm apart on the same branch of a tree. Determine the diameter of the pupils of his eyes
what is the horizontal distance x between the two balloons.
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