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A flywheel comprises a uniform circular disk with a mass of 99.0 kg and a radius of 1.0 m. It rotates with an angular velocity of 1472 rev/min. A constant tangential force is applied at a radial distance of 0.8 m. If the wheel is brought to rest in 113.0 s, what is the tangential force?
Three resistors, of 8.0 %u03A9, 12 %u03A9, and 24 %u03A9, are in parallel, and a current of 20 A is drawn by the combination. Determine the potential difference across the combination
A resistor of unknown resistance and a 42.0-? resistor are connected across a 123.0-V emf device in such a way that an 10.0-A current flows
Two 9cm diameter charged disks face each other, 25cm apart. Both disks are charged to - 80 nC.
Wavelengths of light from a remote galaxy are found to be 1.5 % longer than the corresponding wavelengths measured here on earth. What ids the speed of the galaxy relative to earth
target 1 cm2 in area and 0. 1 cm thick. There are 0.048 x 1 024 atoms per cm3 in the target, and the total cross-section at the energy of the beam is 4.5 b. What is the macroscopic total cross-section
An automobile transmission has 175 hp of power entering from the engine, 167 hp leaving to the wheels, while losing 5000 Btu/hr to the surroundings as heat.
questiona 20 kg floodlight in a park is supported at an end of a horizontal bean of negligible mass that is hinged to a
A 69 kg boy and a 40 kg girl use an elastic rope while engaged in a tug-of-war on an icy, frictionless surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find out the magnitude of the acceleration of the boy toward the girl.
Lead has a latent heat of fusion of 2.32x10^4 J/kg, a specific heat of 128 J/(kg K), and a melting point of 228°C. determine velocity needed to achieve melting the bullet
The velocity of the bal
A transformer has 100 turns in the primary with a voltage of 100V, and 200 turns in the secondary with a voltage os 200V. what will be the current in the secondary
A 55kg pole vaulter running at 10m/s vaults over the bar. If the vaulter's horizontal component of velocity over the bar is 1.10m/s and air resistance is disregarded, how high was jump.
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