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Charge is placed on two conducting spheres that are very far apart and connected by a long thin wire. The radius of the smaller sphere is 5 cm and that of the larger sphere is 12 cm. The electric field at the surface of the larger sphere is 920 kV/m. Find the surface charge density on each sphere.
A 109-rad dose of radiation is administered to a cancer patient (mass = 73) kg). how much energy is absorbed
an electric dipole consists of charges 2e and -2e separated by 0.60 nm. it is in an electric field of strength 4.6 x
an observer stands 25 m behind a marksman practicing at a rifle range. the marksman fires the rifle horizontally the
Space probes require power systems that can remain functional over long periods of time. One innovative design for a small electrical power source uses the energy released by the alpha decay of curium-244.
a solid ball and a hollow ball each with a mass of 2.29 kg and radius 0.115 m start from rest and roll down a ramp of
A classroom demonstration is done with an Atwood machine. The masses are m1 = 1.0 kg and m2 = 1.10 kg. what is the acceleration of gravity at that place
A spherical steel ball bearing has a diameter of 2.54 cm at 22 degrees. what is the diameter as its termperature is raised at 88 degrees celcuis.
Hail comes straight down at a mass rate of m/%u0394t = 0.030 kg/s and an initial velocity of v0 = -10 m/s, calculate the force exerted by the hail on the roof
Two small identical conducting spheres are placed with their centers 0.74 m apart. One is given a charge of 1.2 10-8 C, the other a charge of ?2.2 10-8 C. Find the electrostatic force exerted on one sphere by the other
The magnetic field between the poles of an electromagnet is 2.17 T. A coil of wire is placed in this region so that the field is parallel to the axis of the coil. How many turns are there in the coil
Suppose the gravitational force between two massive spheres is 100 N. If the distance between the spheres is doubled, what is the force between the masses.
Blood is pumped from the heart at a rate of 5 L/min into the aorta (of radius 1.01 cm). Determine the speed of blood through the aorta
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