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A small spherical insulator of mass 2.46 × 10-2 kg and charge +0.600 C is hung with a thin wire of negligible mass. A charge of -0.900 C is held 0.150 m away from the sphere and directly to the right of it, so the wire makes an angle with the vertical (see the drawing). Discover (a) the angle and (b) the tension in the wire.
Two identical brass balls mounted on wooded posts initally have different amounts of charge, one +3uC and the other +15uC. What is the final charge in each ball
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 3.8 x 1028 kg and 1.3 x 103 m. Find the density of such a star
The glass is layered between bottom layer of air and top layer of air. Compute the size of each angle in degrees including angles of incidence, refraction and reflection at each of the two parallel surfaces
you are tuning an out of tune organ pipe to a tuned pipe of middle c 261.63 hz. you hear a beat frequency of 2
An ideal toroidal solenoid has a cross-sectional area of 0.560cm^2 , a mean radius of 12.0cm , and 1650 turns. What is the self-inductance of this solenoid
It is well known that bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with 6 g bullets at the rate of 100 bullets/min, the speed of each bullet being 450 m/s. Suppose too that ..
a 3500-kg vehicle moving east at 50 kmh collides head-on with a6000kg vehicle moving west at 40 kmh. the two vehicles
An electric motor can lift a weight of 2000N through a height of 10 m in 20 sec. What is power of motor
For the house in Question 3, calculate the infiltration heat losses in Btu/h when ?T = 40°F. What percentage of the heat loss is because of infiltration
a 35 microc charge is placed 60 cm from an identical 35 microc charge. how much work would be required to move a 0.72
A 4.20-kg object on a frictionless horizontal surface is attached to one end of a horizontal spring that has a force constant k = 640 N/m. The spring is stretched 7.20 cm from equilibrium and released. What is the frequency of the motion? What is the..
Two parallel square metal plates (side length: 13 cm) are separated by a dielectric material with a dielectric constant 3.9 and a thickness of 2.4 mm. The plates are connected to a 11 V power source and allowed to fully charge.
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