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A 755-loop square armature coil with a side of 8.5 cm rotates at 65.0 rev/s in a uniform magnetic field of strength 0.75 T. What is the rms voltage output of the generator?
A 9300 kg boxcar traveling at 20m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 10 m/s. What is the mass of the second car.
What photon energy (eV) is required to excite the hydrogen electron in the innermost (ground state) Bohr orbit to the first excited orbit?
In 2.63 minutes, a ski lift raises four skiers at constant speed to a height of 147 m. What is the average power provided by the tension in the cable pulling the lift
Consider a too-small space station that consists of a 2.7m radius rotating sphere. A man standing inside is 1.9m tall and his feet are at 1g. What is the acceleration of his head.
A 2 kg mass dropped 2.0 m above a spring with a spring constant of 40.0 N/m. How much does the spring compress
A 130g block slides back and forth on a frictionless surface between two springs, Find the maximum compression of the right-hand spring
A copper rod (length=2 m, radius=3×10-3 m) hangs down from the ceiling. A 9.0-kg object is attached to the lower end of the rod. The rod acts as a "spring," and the object oscillates vertically with small amplitude. Ignoring the rod's mass, determ..
explain the energy released in the explosion. A rock stuck in the tread of a 59.0 cm diameter bicycle wheel has a tangential speed of 3.20 m/s. When the brakes are applied, the rock's tangential deceleration is 1.20 m/s^2
A curve of radius 40 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely create the curve?
A truck weighs four times as much as a car. if the truck coasts into the car at 12km/h and they stick together, what is their fimal velocity.
A firefighter a distance d from a burning building directs a stream of water from a fire hose at angle ?i above the horizontal, at what height h does the water strike the building
A hypodermic syringe contains a medicine with the density of water, Determine the speed of the medicine as it leaves the needle's tip
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