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A solid cylindrical disk has a radius of 0.14 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 40 N force is applied tangentially to the disk, perpendicular to the radius, the disk acquires an angular acceleration of 110 rad/s2. What is the mass of the disk?
A cart of mass M = 1.6 kg can roll without friction on the level track. A light string draped over a light, frictionless pulley connects the cart to a hanger with mass m = 0.7 kg.
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 two stars in a binary star system have masses 1.9 x 10^30kg and 6.1 x 10^30kg. What is the speed of the heaviest star
An L-R-C series circuit, R=150 ohms, L= 0.750H, and C= 1.70x10^-2uF. The source has a voltage amplitude of 140V, What is the average power delivered by the source
Consider a group of 20 molecules with the following speeds: three have speed 1 m/s, Determine the rms speed (in m/s) of the molecules in this group at this instant in time
Which of the planets fits the following description: "a solid, cool surface, with occasional dust clouds and a thin CO2 atmosphere".
A proton is initially at rest at a point where the potential is 507V. Sometime later the proton is at a point where the potential is 187V. If no force other than the electrostatic force acts on the proton, what is its final kinetic energy.
driving along an interstate highway at 55 mph you see a car on a parallel highway coming toward you with a relative
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.48 km. What is the magnitude of the couple's displacement
A 82.7 kN car is travelling at 57.7 mph when the driver decides to exit the freeway by going up a ramp. computeb the magnitude of the average drag force exerted on the car
A 0.59-kg object connected to a light spring with a force constant of 24.0 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
The charged plates of a parallel plate capacitor each have a charge density of ? C/m2. compute the electric field between the plates
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