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A solid cylindrical disk has a radius of 0.45 meter. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 15 Newton force is applied to the disk, perpendicular to its radius, the disk acquires an angular acceleration of 120 rad/s2. Evaluate what is the mass of the disk?
a hamster gets on a stationary wheel with radius 0.15 m and runs until wheel rotates at angular speed of 12.0 rad/s in 4.0 s What is tangential acceleration of wheel's edge
A 56 kilogram rock with a volume of 3 L is completely submerged in water. The density of water is 1 kg/L. Find what volume of water is displaced by the rock
One can not align the apparatus to eliminate entirely the effects of the Earth's magnetic field. calculate the component of the earth magnetic field perpendicular to the entering electron beam
A mass of 12.5 kg is hanging by a steel wire 1.13 m long and 1.03 mm in diameter. If the mass is pulled down slightly and released, what will be the frequency of the resulting oscillations
A parallel-plate capacitor with circular plates of radius 0.20 m is being discharged. At what rate is the electric field between the plates changing
A metal sphere with radius r_a is supported on an insulating stand at the center of a hollow, metal spherical shell with radius r_b. There is charge + q on the inner sphere and charge - q on the outer spherical shell. Take potential V to be zero w..
what is the magnitude of the electric field strength E such that an electron, What elecric field strength E is required if the electron is replaced by a proton
A rubber raft of mass 3M floats past a dock at 1 m/sec toward the east. A girl of mass 2M runs down the dock and jumps in the raft with a speed of 2 m/sec in the north direction. Find the final velocity of the raft and girl
A 17 kg object and a 23 kgobject are connected by a massless compressed spring and rest on a frictionless table.After the spring is released, the object with the smaller masshas a velocity of 3m/s to theleft.
An incident ray strikes a mirror with an angle of 30 degrees to the surface of the mirror. What is the angle of the reflected ray
A spherical water drop, 1.80 ?m in diameter, is suspended in calm air owing to a downward-directed atmospheric electric field E = 452 N/C. What is the weight of the drop
A singly charged ion of 7Li (an isotope of lithium) has a mass of 1.16×10?26kg. What is the radius of the ion's path in the magnetic field
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