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A generator has a square coil consisting of 217 turns. The coil rotates at 104 rad/s in a 0.146-T magnetic field. The peak output of the generator is 73.0 V. What is the length of one side of the coil?
The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.53 m and 1.03 m, respectively. The respective rotational speeds are 449 rev/min and 4147 rev/min. Compute the speeds of the tips of both rotors.
Sketch a force diagram for the desk.
Two identical 1.70kg masses are pressed against opposite ends of a spring of force constant 1.70N/cm, Find the maximum speed of each mass when it has moved free of the spring on a smooth
A person exerts a horizontal force of F = 190 N in the test apparatus. (h of arm = 0.34 m. And h of flexor muscle= .054 m) Find the horizontal force M that his flexor muscle exerts on his fore arm.
A lamp (R = 148 ), an electric heater (R = 23 ), and a fan (R = 48 ) are connected in parallel across a 117 V line. What is the voltage across the fan
An open-pit coal mine consumes 96 hectares of land, down to the depth of 26 m, each year. What volume of earth, in cubic kilometres, is removed in this time.
The central star of a planetary nebula emits ultraviolet light with wavelength 104nm, What is the first-order diffraction angle
Four particles are held in place at the corners of a square with sides of length L. Each particle has a charge q and mass m. (a) What is the potential energy of the system of charges.
Two disks are mounted on frictionless bearings on the same axle and can b brought together so that they can couple and rotate as one unit. what is the angular speed after coupling
A 1 kg block of Al is heated at atmospheric pressure so that its temperature increases from 22.0 degrees C to 40.0 degrees C. calculate The work done by the Al block
An elevator can lift a 185 N aircraft a distance of 36 meters in 11 s. What is the power output of the elevator
The armature of an ac generator is a rectangular coil, 2.0 cm by 6.0 cm with 80 turns. at what angular speed is the armature rotating
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