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A positive charge of 1.000 C is located in a uniform field of 9.50×104 N/C. A negative charge of -0.500 C is brought near enough to the positive charge that the attractive force among the charges just equals the force on the positive charge due to the field. How close are the two charges?
A jetliner has a gross weight of 250,000 kilogram on its takeoff roll it accelerates from rest to 50 m/s in a distance of 3000 meter. Find the force of thrust of the aircraft's engines
A 2.5 kg solid sphere (radius = 0.10m) is released from rest at the top of a ramp and allowed to roll without slipping. obtain its translational kinetic energy
A speck of dust on a spinning DVD has a centripetal acceleration of 20 m/s^2. A) What is the acceleration of a different speck of dust that is twice as far from the center of the disk? B) What would be the acceleration of the first speck of dust if t..
a 30000-kg truck travelling at 10.0ms collides with a 1700-kg car travelling at 25ms in the opposite direction. if they
A demonstration gyroscope consists of a uniform disk with a 41-cm radius, mounted at the midpoint of a light 58-cm axle, How fast is the gyroscope precessing, in units of rad/s, if the disk is spinning around the axle at 28 rev/s
A uniform chain of length L and mass M is lying on a smooth table and one-third of its length is hanging vertically down over the edge of the table. If g is acceleration due to gravity, the workrequired to pullthe hanging part on to the table is
Find the closest distance an alpha particle of kinetic energy 5.0MeV can approach a bare gold nucleus, What is its kinetic energy in eV when it is expelled to infinity
Two disks are rotating about the same axis. Disk A has a moment of inertia of 4.59 kg·m2 and an angular velocity of +7.91 rad/s. What is the moment of inertia of disk B
What is the frequency of rotationA 10kg baby is perched at the rim of a 40kg disk. The disk rotates freely in a horizontal plane at 1 rev/s. What is the frequency of rotation in rev/s when the baby arrives at the center
a swimmer maintains a speed of 0.15ms relative to the water when he swims directly toward the opposite shore of a
A small sphere with a mass m = 0.150 kg is suspended by a light string from a vertical post mounted at the edge of a merry-go-round with a radius R = 0.440 m. Calculate the speed of the sphere
A huge explosion is heard 77.7 miles away. How long does it take the sound to travel that far
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