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A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.00 rad/sec2 acquires an angular velocity of 5.00 rad/sec. The CD continues rotating at 5.00 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular deceleration. What is the angular distance traveled by a point 4.00 cm from the center, at the time 25.0 seconds from the start
Archer fish often prey for flies that hover above the water. The index of refraction of water is 1.33. what would be a "safe" horizontal seperation for the fly
A spacecraft is in orbit around a planet. The radius of the orbit is 2.9 times the radius of the planet (which is R = 71474 km). What is the period of the spacecraft's orbit
An electric car is being designed to have an average power output of 4,900 W for 2 h before needing to be recharged, How much energy would be stored in the charged batteries
A solid conducting sphere with radius R carries a positive total charge Q . The sphere is surrounded by an insulating shell with inner radius R and outer radius 2R . The insulating shell has a uniform charge density rho.
The acceleration due to gravity on the Moon's surface is known to be about one-sixth the acceleration due to gravity on the Earth. find the mass of the Moon in terms of the mass of the Earth
A spherical shell of inner radius a and outer radius b is constructed of uniformly magnetized material with magnetization M. (a) Find the equivalent volume and surface current distributions.
An Olympic long jumper leaves the ground at an angle of 23 degrees and travels through the air a horizontal distance of 9.7 meters before landing
Two forces act on a 6.5 kg object sitting on friction-less horizontal surface and force is 25N in the(+) x-direction and the other is 35N in the (-)x-direction. What is the accelertation of the object
A one kilogram textbook drops from a one-meter high table in a room at 250C temperature. Find the change in entropy after the system has reached equilibrium
An 845-N sled is pulled a distance of 170 m. The task requires 1.10 x10^4 J of work and is done by pulling on a rope with a force of 12N. At what angle is the rope held.
In a new (inelastic) collision, the same two bumper cars with the same initial velocities now latch together as they collide. What is the final speed of the two bumper cars after the collision
A Carnot heat engine takes 2000J of heat from the high temperature reservoir at 227 degrees Celsius, What is the Carnot efficiency
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