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Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released quickly to accomplish a task that demands high power. An industrial flywheel has a 1.3 m diameter and a mass of 325 kg. A motor spins up the flywheel with a constant torque of 40 N m. How long does it take the flywheel to reach top angular speed of 1000 rpm?
consider the earth and a cloud layer 825 m above the earth to be the plates of a parallel-plate capacitor. if the cloud
1. cut a 1 horizontal slit on the side of the cereal box just below the nutrition information.2. cut a slit across the
Car A uses tires for which the coefficient of static friction is 1.1 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 25 m/s. Car B uses tires for which the coefficient of static friction is 0.65 on the s..
A diver runs horizontally off the end of a diving board with an initial speed of 1.70 m/s, what is the diver's speed just before she enters the water
a concave cosmetic mirror has a focal length of 22 . a 4.0 -long mascara brush is held upright 11 from the mirror.a.
How much work must be done to bring three electrons. calculate the mass of an ice cube.
The escape speed from a distant planet is 40 km/s. If theacceleration of gravity on the planet surface is 12.5m/s2, what is the radius of the planet
A particle is acted on by two torques about the origin: τ1 has magnitude 10 N m and pointsin the direction of increasing x, and τ2 has a magnitude of 12N m and points in the direction of decreasing y.
Suppose 0.0450kg of steam (at 100.°C) is added to 0.450kg of water (initially at 20.5°C), Find the final temperature of the water after equilibrium is reached
Lawn spheres placed on a pedestals are convex mirrors. Onesphere has the diameter of 37 cm. What is the height of the bird's image
The chin-up is one exercise that can be used to strengthen the biceps muscle. How much work can the biceps muscles (one in each arm) perform in a single contraction
A source emits sound uniformly in all directions. There are no reflections of the sound. find the total sound power P emitted by the source
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