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Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -1.0799 N when separated by 50 cm, center-to-center. The spheres are then connected by a thin conducting wire. When the wire is removed, the spheres repel each other with an electrostatic force of 0.1298 N. What were the initial charges on the spheres? Since one is negative and you cannot tell which is positive or negative, there are two solutions. Take the absolute value of the charges and enter the smaller value here.
A Carnot engine operates between 27C and 927C and preforms 4800 J of work. Calculate the net entropy change during one cycle
Police investigators, examining the scene of an accident involving two cars, measure 72-m-long skid marks of one of the cars, Estimate the initial speed of that car assuming a level road
A 75kg hiker climbs to the top of a 4100m -high mountain. The climb is made in 5.0h starting at an elevation of 3000m, Calculate the work done by the hiker against gravity
Why three points? Would two have been enough? Describe what changes would occur, if any, in the electric field pattern and in the equipotential curve you measured if the magnitudes of your three charges were increased, all by the same factor.
A monatomic ideal gas is heated while at a constant volume of 1x10^-3 m^3, using a 10 watt heater. How long was the heater on
in a science fiction movie a 100 g base ball travelling with a speed of 60m/s and an electron travelling at a speed of 1.2*10^8 m/s are approaching each other for a head on collision, what is the momentum of the base ball
A positron is a particle of "antimatter"; it has the same mass as an electron (9e-31 kg), but its charge is positive instead of negative. At research facilities such as Cornell Electron Positron Storage Ring at Cornell University in New York, high..
Two ships, A and B, leave port at the same time. Ship A travels northwest at 16 knots and ship B travels at 21 knots in a direction 40° west of south, What is the direction of the velocity of ship A relative to B
Calculate the energy associated with the magnetic field of a 191 turn solenoid in which a current of 2.44. A produces a magnetic flux of 3.74 x 10-4 T • m2 in each turn.
A small glass bead charged to 6.9nC is in the plane that bisects a thin, uniformly charged, 10-cm-long glass rod, What is the total charge on the rod
The power required by an ice maker is 225 W and is the rate at which it does work. The ice maker operates like a refrigerator or an air conditioner and has a coefficient of performance of 3.60.
An electric charge is uniformly distributed throughout a 12cm radius non conducting sphere. what is the volume charge density of the sphere
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