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Two points charges q1= 3.5 mC and q2 = 7.5 mC are initially far apart. They are then brought together, with a final separation of 2.5 meter. Obtain how much work does it take to bring them together?
In an L-C circuit, C=3.21*10^-6 F and L=86.0mH. During the oscillations the maximum current in the inductor is .851mA. What is the maximum charge of the capacitor
A space station, in the form of a wheel121m in diameter, rotates to provide an "artificial gravity" of2.70m/s2for persons who walk around on the inner wall of the outer rim. Find the rate of the wheel's rotation in revolutions per minute that will pr..
A horizontal force of 280 Nis exerted on a 2.0 kg discus as it is rotated uniformly in ahorizontal circle (at arm's length) of radius 1.00 m. Calculate the speed of the discus
The index of refraction for a certain kind of glass is 1.645 for violet light and 1.615 for red light. A ray of violet light and a ray of red light are both incident on this glass from air and both have the same refraction angle of 31.12o. What is th..
For a damped oscillator with a mass of 320g, a spring constant 82N/m and a damping coefficient of 71g/s, what is the ratio of the amplitude of damped oscillations to the initial amplitude at the end of 28 cycles.
a barefoot field-goal kicker imparts a speed of 42 meters per second to a football initially at rest. obtain the force exerted by the ball on the kicker's foot
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. But she does have devices to measure distance and time accurately. What is the mass of this canister
A block with a mass of 8 kg is at rest on a horizontal surface. The coefficiant of static friction between the block, What is the magnitude of the frictional force on the block
A shopper pushing a cart through a store moves 30 m south, then makes a 90o turn and moves 14 m. Find the magnitude of the smallest possible displacement
a dab of mud mass 0.1 kg and sitting 0.25 m from the center flies off a horizontal spinning wheel when the wheel takes
An electron in a multi electron atom has = +3. For this electron, what are the (a) smallest possible value of, (b) the smallest possible value of n, and (c) the number of possible values of ms?
The heels on a pair of women's shoes have radii of0.50 cm at the bottom. find the stress on each heel
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