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In a science fiction story, a microscopic black hole is given anenormous positive charge by firing an un-neutralized ion driveexhaust (consisting of positively charged xenon ions) into it forsix months. The idea behind the charging process is to be able to confine and manipulate this dangerous object with powerful electricfields. Suppose the charge on the black hole is 5740 C. At what distance from it is the electric potential equal to1050 V.
A person who is cycling with initial velocity of 12 m/s brakes hard locking wheels they slide to a stop their mass is 70kg and their bike is 5kg. how far do they travel before they stop
A ballerina spins initially at 1.5 revolutions/second when her arms are extended. Determine her initial moment of inertia
IP Halley's Comet Halley's Comet, which passes around the Sun every 78 years, has an elliptical orbit. When closest to the Sun (perihelion) it is at a distance of 8.823 x 10^10 m and moves with a speed of 54.6 km/s. The greatest distance between Hall..
Many radioisotopes have important industrial, medical, and research applications. One of these is 60Co, which has a half-life of 5.20 years and decays by the emission of a beta particle, What is the minimum number of nuclei in the source at the tim..
Two forces act on a 1.6 kg box. One of the forces is known to be Fvec = 4.7ihatbold N. The acceleration is measured to be avec = (-1.9 ihatbold - 2.8 jhatbold) m/s2. Find the second force in unit-vector notation
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. The plate is 11.00 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 12.5 cm. Calculate the apparent thickness of the plate
With an average mass of only 30.0 g, the ouse lemur of Madagascar is the smallest primate on the earth. What is the lemur's tangential speed at that point
A certain thin, uniform rod has a mass of 2 kg and length 3 m. To what shorter length must you trim it (discarding the smaller part) so that the remaining length has half the original moment of inertia about its end.
One of the 1000 kg car moves west at 40 m/s , while the second moves east from the same starting point at a constant velocity of 30 m/s. What is the momentum
26g of copper pellets are removed from a 300 C oven and immediately dropped into 110mL of water at 25 C in an insulated cup
You are trying to slide a refrigerator across a horizontal floor. The mass of the refrigerator is 188kg, and you require to exert a force of 347N to make it just begin to move. What is the coefficient of static friction between floor and refrigera..
A laser beam is incident at an angle of 44.0° to the vertical onto a solution of corn syrup in water. Suppose the light is red, with wavelength 632.8 nm in a vacuum. Find its wavelength in the solution
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