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A horizontal force of 210N is exerted on a 2.0 kg discus as itrotates uniformaly in a horizontal circle ( at arm's length ) ofradius .90 m. Calculate the speed of the discus?
One particle has a mass of 2.00 10-3 kg and a charge of +7 µC. A second particle has a mass of 5.00 10-3 kg and the same charge. Find the initial separation between the particles
A square loop of dimension a x a is moving at a speed v toward a straight wire carrying a current I. What is the induced emf of the loop as a function of the distance d between the wire and the nearest side of the loop
a 30kg child wants to use a 20kg board that is 6.0m long as a seesaw. since all her friends are busy, How far from her will the support be
A person wears a hearing aid that uniformly increases the sound level of all audible frequencies of sound by 27.8 dB. What is the intensity delivered to the eardrum
A proton and an electron are fixed in space with a separation of 911 nm. Calculate the electric potential at the midpoint between the two particles, Find the potential and the magnitude of the force.
A uniform line of charge that is 20.0 cm long has a total charge of -6.00 ?C. What is the electrostatic force on the electron
What is the maximum speed with which a 1350kg car can round a turn of radius 71m on a flat road if coefficient of static friction between tires and road is 0.40.
At 12°C, a brass cube has an edge length of 25 cm. What is the increase in the cube's surface area when it is heated from 12°C to 97°C
In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. Determine the angle of the total acceleration relative to the radial direct..
A small metal cylinder rests on a circular turntable that is rotating at a constant speed as illustrated in the diagram (Figure 1) . The small metal cylinder has a mass of 0.20kg , the coefficient of static friction between the cylinder and the tu..
As a 1.00 cm diameter plunger reduces the height of the column of air inside the chamber from 7.00cm down to 0.50cm, Determine the air pressure inside the chamber after compression
The electron mass is 9×10?31 kg. What is the magnitude of the momentum of the electron
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