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A fire hose 4.19 cm in diameter is capable of spraying water at a velocity of 16.3 m/s. For a continuous horizontal flow of water, what horizontal force should a fireman exert on the hose to keep it stationary?
The top of her head is 0.12m above her eyes. What is the height of the shortest mirror in which she can see her entire image? Expalin how far above the floor should the bottom edge of the mirror be placed?
The mass of a robot is 3780 kg. This robot weighs 3540 N more on planet A than it does on planet B. What is the difference MA - MB in the masses of these planets
q1. george of the jungle with mass m swings on a light vine hanging from a stationary tree branch. a second vine of
Find the force P that must be applied to a piston of area 11.10 cm2 to produce sufficient fluid pressure to support a car weighing 10,251 N by means of a column of fluid of cross sectional area 260 cm2, How far must the smaller piston move in order..
A disk of radius 25 cm lies in a vertical plane and rotates with a constant angular acceleration of 5.00 rad/sec^2. What is the corresponding tangential speed
A 33.0 g bullet moving at 434 m/s strikes a 5.0 kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 295 m/s. How fast is the bag moving while the bullet exits.
Light of a wavelength 450 nm is incident on a sodium emitter in a photoelectric effect apparatus. Sodium is 2.3 eV, What is the stopping potential for the emitted electrons
Two waves traveling on a string in the same direction both have a frequency of 141 Hz, a wavelength of .43 m, and an amplitude of .16 m. What is the phase difference between the two waves
Two 10-cm-diameter charged rings face each other, 16.0 cm apart. What is the electric field strength at the center of the left ring
A line of charge starts at x = +x0 and extends to positive infinity. The linear charge density is λ = λ0x0/x, where λ0 is a constant. Determine the electric field at the origin.
An elevator is moving upward at a constant speed of 2.50 m/s. A bolt in the elevator ceiling 3.00 mabove the elevator floor works loose and falls. How long does it take for the bolt to fall to the elevator floor
A laser with wavelength 650 nm is incident on a single slit with width 10 mm. A screen is placed 1 m beyond the slit. How far apart will the first dark bands on either side of the central maximum be?
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