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Two small particles have charges Q1 = +4.0 C and Q2 = ?7.0 C. If the magnitude of the electric force between the particles is 115 N, what is the distance among the particles?
A 200g oscillator in a vacuum chamber has a frequency of 2hz. How many oscillations will have been completed when the amplitude is 30% of its initial value
Captain Jean-Luc is piloting the USS Enterprise XXIII at constant speed v = 0.830 c. As the Enterprise passes the planet Vulcan, he notices that his watch and the Vulcan clock both read1:00 P.M. At 3:00 P.M., according to his watch, the Enterprise pa..
The mass of the sun is 1.99 X 10^30 kg and its distance from Earth is 150 million kilometers (150 x 10^9 meters). What is the gravitational force between the sun and Earth?
When a car is traveling at 25 m/s on level ground, the stopping distance is found to be 22m. What is the stopping distance now, as measured along the incline
A student throws a 0.140kg ball straight upwards to a height of 7.20 m. How much work did the student do? A 33.8 kg child starting from rest slides down a water slide with a vertical height of 20.2 m. What is the child's speed three-quarters of the w..
In the Superconducting Super Collider that was planned to have beenbuilt in Texas this past decade, protons would be bent by amagnetic field and would move in a circle of radius 13.10 km.
A generator has a square coil consisting of 265 turns. The coil rotates at 106 rad/s in a 0.174-T magnetic field. What is the length of one side of the coil
Two ants race across a table 62.0 cm long. One travels at 4.69 cm/s and other at 3 cm/s. When the first one crosses the finish line, how far behind is second one? Reply in units of cm.
A girl sits fixed on a merry-go-round of mass M = 500 kg and radius R = 2 m. The merry-go-round is at first at rest and is free to rotate without friction.
A canoe has a velocity of 0.550 southeast relative to the earth. The canoe is on a river that is flowing at 0.510 east relative to the earth. Find the magnitude of the velocity of the canoe relative to the river.
An excavation crew digs a hole in the ground measuring 60 yd x 50yd x 8 yd to facilitate a basement for an office building. Five dump trucks, each with a capacity of 20 yd3, are utilized to haul the material away. How many trips should each truck mak..
A 10 kilogram block is set in motion up a 20o inclined plane with an initial speed of 8.0 m/s. Find the change in gravitational potential energy of the block
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