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A 235 kilogram merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 meter is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. Find what constant force would have to be exerted on the rope to bring the merry-go-round from rest to an angular speed of 0.800 rev/s in 2.00 second? N
A capacitor with C = 36.0 mF is placed in series with a 12.0-V battery and an inductor having L = 350 mH. What is the frequency of electromagnetic oscillations in the circuit
Suppose in the drawing that I1 = I2 = 42.4 A and that the separation between the wires is 0.0215 m. By applying an external magnetic field (created by a source other than the wires) it is possible to cancel the mutual repulsion of the wires. This ext..
a car whose wheels are of radius r feet is driven at a speed v. a pebble is thrown from one of the wheels. for very
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, twelve years have elapsed on earth, and 9.2 years have elapsed on board the ship. How far away (in meters) is the planet according to t..
A dentist uses a mirror to examine a tooth that is 0.75 centimeter in front of the mirror. The image of the too this formed 11.0 centimeter behind the mirror. Determine what is the mirror radius of curvature
A particle starts from the origin with velocity 9 m/s at t = 0 and moves in the xy plane with a varying acceleration given by = (9?t) m/s2
Two objects with masses of 3.00 kg and 5.00 kg are connected by a light string that passes over a frictionless pulley, find the distance each object will move in the first second of motion if both objects start from rest
The limits of the visible spectrum are about 400 nm to 700 nm. Find the angular breadth of the first order visible spectrum produced by a plane grating having 15,000 lines per inch, when light is incident generally on the grating.(1inch = 2.54 cm)
The nucleus of an atom has a radius of about 7.9Ã-10-15 m. The electron is normally at a distance of about 3.4Ã-10-11 m from the nucleus, Find the volume of the nucleus
A 4.90-kg ball, moving to the right at a velocity of +2.14 m/s on a frictionless table, Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic
calculate the overall magnification of a compound microscope that uses an objective lens with a focal length of 0.50 cm
A roller coaster car of mass 250 kg has a speed of v0 = 12 m s-1 at point A, located at a height of h = 15 m. Find the speed of the car when it reaches point B. Use energy ideas
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