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In a adjustable nozzle for a garden hose, a cylindrical plugis aligned along the axis of the hose and can be inserted into thehose opening. The purpose of the plug is to change the speedof the water leaving the hose. The speed of the water passingaround the plug is to be three times greater than the speed of thewater before it encounters the plug. Find the ratio of the plug radius to the inside hose radius.
An 82.0 kg-diver stands at the edge of a light 5.00-m diving board, which is supported by two pillars 1.60 m apart, Find the force exerted by pillar B on the board
The electric field between the plates of a paper-separated (K-375) capacitor is 8.20×10^4 V/m. estimate the area of each plate
A 4000.0 kg spaceship is traveling toward the moon at a velocity of 20.000 km/s. At the rear of the spaceship, What is the spaceship velocity after the rocket fires
We accelerate electrons between two parallel plates a few cm apart. We apply 2.05 MV across the plates. Find the momentum of the electron
For a long solenoid, the magnetic field strength within the solenoid is given by the equation where t is time in seconds. find the radius of the solenoid
The mass has a kinetic energy of 17.0 J as it passes through its equilibrium position (the point at which the spring force is zero). At what rate is the spring doing work on the mass
The heaviest and lightest strings on a certain violin have linear densities of 3.0 and 0.29 g/m. What is the ratio of the diameter of the heaviest string to that of the lightest string, assuming that the strings are of the same material?
A charge of -5 micro-coulombs is placed at x = 0 cm, y = 0 cm. Another charge of -5 micro-coulombs is placed at x = +22 cm, y = -50 cm. When measured counter-clockwise from the x axis, what angle is the electric force vector acting on the charge a..
A woman on a 10 speed bicycle travels at 9 m/s relative to ground as a she passes a little boy on a tricycle going in the opposite direction. If the boy is travelling at 1m/s relative to the ground, how fast does the boy appear to be moving relati..
Describe the unique behavior of water (thermal expansion and specific heat capacity) that make it essential for life on Earth. 5-8 sentences
Use the Lorentz transformation to rederive the time-dilation formula. To do this you must define two events which occur at the same location in S'.
Consider a Carnot engine that works between thermal reservoirs with temperatures of 1030.0 K and 297.0 K. How much energy is delivered to the cooler reservoir
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