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A water pipe narrows from a radius of r1 = 4.33 cm to a radius of r2 = 3.39 cm. If the speed of the water in the wider part of the pipe is 2.59 m/s, what is the speed of the water in the narrower part?
question1a stable nucleus is composed of z protons and n neutrons. is the mass of nucleus identical to the sum of the
The Earth orbits about the sun once every 365 days. The distance between the earth and the sun is 1.5x10^11 m. What is the average orbital velocity of the earth
q1. a rubber ball of mass m 0.739 kg is dropped from a height ho 4.73 m and it rebounds to a height hf 3.66 m.
Two people carry a heavy electric motor by placing it on a light board 2.30m long. One person lifts at one end with a force of 420N , find Where is its center of gravity located
A 6.0kg crate is pushed from the top of an incline and travels down the incline with an initial speed of 8m/s.find loss of potential energy
As an energy-efficiency consultant, you're asked to assess the pumped-storage facility. Its reservoir sits 136 above its generating station and holds 9.0×10^9 of water. The power plant generates 315 of electric power while draining the reservoir over..
A ball with a horizontal speed of 1.25m/s rolls off a bench 1.00m above the floor. How long will it take the ball to hit the floor
A spark plug in an automobile engine consists of two metal conductors that are separated by a distance of 1.1 mm, What is the magnitude of the potential difference V between the conductors
The plates of a 2.5 E-9 F parallel plate capacitor are separated by 1.2 mm. What is the area of each plate
An electron and a positron (an antielectron) make a head-on collision, each moving at v=0.99999c. What is the kinetic energy of each of the muons
A series RLC circuit with R = 43 Ohms , L = 270 mH , Find the maximum frequency of the frequency range over which the peak current will exceed half its value at resonance
A 71-kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12 m. what is the normal force exerted by the snow on the skier at point B
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