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Two objects are identical and small enough that their sizes can be ignored relative to the distance between them, which is 0.27 m. In a vacuum, each object carries a different charge, and they attract each other with a force of 1.2 N. The objects are brought into contact, so the net charge is shared equally, and then they are returned to their initial positions. Now it is found that the objects repel one another with a force whose magnitude is equal to that of the initial attractive force. What is the initial charge on each object? (Note: there are two possible pairs of answers, but assume q1 to be the larger number.)
A stalactite on the roof of a cave drips water at a steadyrate to a pool 4.0m below. As one drop of water hits the poola second drop is in the air, How many drops per minute fall into the pool
An empty hollow metal shell containing vacuum has a total charge of 3C on its outer surface. What is the total charge on the outer surface once this has happened
A portable x-ray unit has a step-up transsformer, the 120 V input of which is transformed to the 100kV output needed by the x-ray tubr, what is the number of loops in the secondary
A 0.60 kg body oscillates on a spring that, when extended 1.0 mm from equilibrium, has a restoring force of 7.0 N. find the angular frequency of oscillation
A magnetic field near the ceiling points up and is decreasing. Looking up at the ceiling, does non-Coulomb electric field curl clockwise or counter-clockwise.
Hexagonal close-packed structure. Consider the first Brillouin zone of a crystal with a simple hexagonal lattice in three dimensions with lattice constants a and c. Let Gc denote the shortest reciprocal lattice vector parallel to the c axis of the..
A service station charges a battery using a current of 6.7 A. for 3.0 hr. How much charge passes through the battery
A 150 kg rock (density is 2500 kg/m 3 ) is dropped to a lake. Determine how much force the man needs to life the rock from the bottom of the lake
your friends mass is 65kg. if she jumps off a 110-cm high table how far does the earth move toward her as she falls? a
A battery in a circuit has an emf of 8.8 V. The only other component in the circuit is a resistor. 4.4 A of current flows in the circuit. What is the potential difference across the battery
Heat flows into an ideal gas at a constant volume. The pressure increases from 1.5 atm to 5.5 atm. What is the total change in internal energy
An airplane lands and starts down the runway with a southwest velocity of 55 m/s/ What constant acceleration allows it to come to a stop in 1.0 km?
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