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Two identical conducting spheres, fixed in place, attract each other with a force of 0.112 N when their center to center separation is 49.00 cm. The spheres are then connected by a thin conducting wire. When the wire is removed, the spheres have a net positive charge and repel each other with an electrostatic force of 0.038 N. What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other?(Hint: Use charge conservation and solve for one of the initial charges. You will end up with a quadratic equation. The solutions give you the positive and negative charges.)
The ground level of the neutral lithium atom is doubly degenerate (that is, g = 2). The first excited level is 6-fold degenerate and is at an energy 1.2 eV above the ground level. In the outer atmosphere of the sum, which is at a temperature of ab..
A train pulls away from a station with a constant acceleration of 0.42 m/s2. What is the slowest constant speed at which she can run and catch the train
you need to determine the density of an unknown liquid. to this end you perform an experiment with a block and notice that the block floats in this unknown liquid with 4.6 cm of its side submerged. determine the density of the unknown liquid
At 2432 m above sea level, Mount Olympus in Utah is the highest peak in Olympic Nantional Park. find the angle the pushing force makes with the horizontal
a firefighter with a weight of 673 n slides down a vertical pole with an acceleration of 3.05 ms2 directed downward.
Consider the long, straight, current-carrying wires shown in the figure. One wire carries a current of 9.5 A in the negative y direction; the other wire carries a current of 4.5 A in the positive x direction
A shot-putter accelerates a 7.3kg shot from rest to 17m/s, If this motion takes 1.3s , what average power was developed
The angular position of a pendulum is represented by the equation ? = 0.0330 cos ?t, Determine the period and length of the pendulum
What is the magnitude of the acceleration of a falling sky diver (mass 62.5kg including parachute) who has opened her parachute
a cylinder fitted with a movable piston contains ideal gas at 27degc pressure 0.50 x 105 pa and volume 1.25 m3. what
A 10 kg weight is put on the weightless piston of the cylinder (20 cm in diameter) filled with oxygen gas (P=101.3kPa, V=1m^3). Calculate the volume of the compressed gas
a 10-m-by-14-m house is built on a 12-cm-thick slab of concrete. what is the rate of heat loss through the slab if the
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