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If our Sun (mass = 1.99 x10^30 kg, radius = 6.96 x10^88 m) were to collapse into a neutron star (an object composed of tightly packed neutrons with roughly the same density as neutrons within a nucleus), what would the new radius of our "neutron-sun" be? (Assume that the density of a nucleus is 2.3 x 10 ^17 kg/m3.)
charges q q and -q are placed on the x-axis of x0 x2m and x4m respectively. at which of the following points does the
A rural power line carries 1.7 A rms at 4700 V. A step down transformer reduces this to 235 V rms to supply a house. Find the turns ratio of the transformer
A blacksmith cools a 1.30-kg chunk of iron, initially at a temperature of 650.0?C, by trickling 15.0?C water over it. How much water did the blacksmith trickle over the iron
a 22 turn circular coil of radius 4.60cm and resistance 1.00 ohms is placed in a magnetic field directed perpendicular
assume a bar 2.5 m long expands 0.5 cm when heated. By how much will a bar 100 m long of the same material expand when similarly heated.
Ball of mass M attached to strong of length L moves in circle in vertical plane. At top of circular path tension in string is 2 x weight of ball. find time it takes ball to reach the ground
A sample containing sulfur (atomic mass 32 u), manganese (55 u), and an unknown element is placed in a mass spectrometer. What is the mass of the unknown element
One goal of the Russian space program is to illuminate dark northern cities by sunlight reflected to the Earth from a 200 m diameter mirrored surface in orbit. Some smaller prototypes have already been constructed and put into orbit.
Two straight parallel wires carry currents in opposite directions as shown in the figure. One of the wires carries a current of I2 = 10.6 A. Calculate the magnitude of the magnetic field at point A
A truck in motion strikes a parked car. During the collision the vehicles stick together and slide to a stop. The truck has a total mass of 1982 kg, how fast was the truck going
Light of wavelength 655 nm is used to illuminate normally two glass plates 20 cm in length that touch at one end, How many bright fringes appear along the total length of the plates
a charge q1 5 nc is placed at x 0 and another charge q2 -2 nc is placed at x 2 .0 cm. where should a third positive
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