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Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal. Charge A is 0.22 m from the spot, while charge B is 0.58 m from it. Find the ratio qB/qA of the charges.
Two converging lenses, each of focal length 15.0 cm, are placed40.0 cm apart, and an object is placed 30.0 cm in front of the first. Where is the final image formed, and what is the magnification of the system?
A trunk with a weight of 230 N rests on the floor. The coefficient of static friction between the trunk and the floor is 0.32, what would be the acceleration of the trunk
An object suspended from a spring vibrates with simple harmonic motion. At an instant when the displacement of the object is equal to one-half the amplitude, what fraction of the total energy of the system is kinetic
What is the minimum diameter mirror on a telescope that would allow you to see details as small as 4.85 km on the moon some 384000 km away
A child goes down a playground slide with an acceleration of 1.30. Find out the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 34.0 below the horizontal.
What is the repulsive electrical force between two protons 4.0×10?15m apart from each other in an atomic nucleus
An electron and a proton are each placed at rest in a uniform electric field of magnitude 546 N/C. Compute the speed of each particle 52 ns after being free.
A mass on a spring bobs up and down over a distance of 25 cm from the top to the bottom of its path twice each second. What are its period and amplitude
Two identical positive charges exert a repulsive force of 6.4* 10^-9 N when separated by a distance of 3.8*10^-10 m. find the charge of each.
Suppose we take a 1 m long uniform bar and support it at the 23 cm mark. Hanging a 0.36 kg mass on the short end of the beam results in the system being in balance
a 1.0-cm-diameter pipe widens to 2.0cm then narrows to 0.5cm. liquid flows through the first segment at a speed of
A motorcycle has a constant speed of 27.7 m/s as it passes over the top of a hill whose radius of curvature is 168 m. determine the normal force that acts on the cycle
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