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An industrial flywheel with a moment of inertia of 4.60 × 102 kg•m2 rotates with a speed of 8000 rpm.
A) Find how much work is required to bring flywheel to rest?
B) If this work is done uniformly in 1.50 minute, determine how much power is required?
A 10-cm-diameter cylinder of helium gas is 20 cm long and at 20°C. The pressure gauge reads 120 psi. how many helium atoms are in the cylinder? what is the mass of the helium?
two ice skaters with masses of 53.5 kg and 75.9 kg are at the center of a 56.28-m-diameter circular rink. the skaters
A step-down transformer produced a voltage of 9.0 V across the secondary coil when the voltage on the primary coil is 120 V. Whatvoltage would appear across the primary coil of this transformer if120 V was applied to the secondary coil?
A 1.4-kg playground ball is moving with a velocity of 3.0 m/s directed 30° below the horizontal just before it strikes a horizontal surface. compute the magnitude of the average resultant force on the ball
an electron is projected with an initial speed of 3.9 x105 ms directly toward a proton that is fixed in place. if the
A 79 kg skier starts from rest at the top of a ski slope 58 meters high, if the fricitonal forces do -11.3 kj of work on her as she descends, how fast is she going at the bottom of the slope?
A comet has a very elliptical orbit with a period of 121.0 y. what is its greatest distance from the Sun
A student sits on a swivel seat. Initially the student is at rest,holding a spinning bicycle wheel that has an angular velocity of14.2 rad/s (see figure below). The studentturns the spinning wheel upside down, reversing the direction ofits angular..
A Texas cockroach of mass 0.168 kg runs counterclockwise around the rim of a lazy Susan (a circular disk mounted on a vertical axle) that has a radius 15.2 cm, What is the angular speed of the lazy Susan after the cockroach stops
During a solar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Moon between the Earth and the Sun. What force is exerted by the Sun on the Earth
A sound source emits sounds of frequency 210Hz that travel by still air at 340m/s. The listener moves at 75 m/s relative to still air toward the stationary source. What is wavelength of the sound between the source and the listener.
The potential dissimilarity between the plates of a parallel plate capacitor is 35 V and the electric field among the plates has strength of 750 V/m. If the plate area is 4.0 × 10-2 m2,what is the capacitance of this capacitor?
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