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Observations of a certain galaxy show that stars at a distance of 16 pc from the center of the galaxy orbit a central supermassive black hole at a speed of 200 km/s. Use Newton's form of Kepler's third law to determine the mass of the central black hole.
A charge +Q0 is distributed uniformly througout a non- conductiong sphere of radius R0 the sphere also has a point charge -q0 at its center. a) what is the electric field outside of the sphere at a distance r from the sphere center? b) what is the el..
A neutral pie-meson is particle that can be created by accelerator beams. what is its velocity relative to the laboratory
In state-of-the-art vacuum systems, pressures as low as 1.00* 10-9 Pa are being attained. Calculate the number of molecules in a 1.80-m3 vessel at this pressure and a temperature of 26.0°C.
a capacitor is formed from a hollow copper sphere of inner radius 44.5 cm and outer radius 55.6 cm. calculate the
A Packing crate is placed on a 20 degree inclined plane. Ifthe coefficient of the static friction between the crate and theplane is 0.65, will the crate slide down the plane
An airplane is heading due south at a speed of 580 km/h. If a wind begins blowing from the southwest at a speed of 90.0 km/h (average), calculate (a) the velocity (magnitude and direction) of the plane, relative to the ground, and (b) how far from it..
a constant horizontal pull of 8.50 n drags a box along a horizontal floor through a distance of 17.4m. a how much does
Your van is parked on a steep hill with a 12o slope with the van held in place by the parking brake. The coefficient of static friction between your van's tires and the road when wet is 0.25. Find the largest angle slope on which you can park your ..
A mass of 0.5 kg hangs from a spring with a spring constant 50N/m. find what is the maximum speed of the mass in its oscillation
A 2762 kg van runs into the back of a 931 kg compact car atrest. find the initial speed of the van
A potter's wheel having a radius 0.45m and a moment of inertia 10.2kg·m2 is rotating freely at 55 rev/min. The potter can stop the wheel in4.0 s with pressing a wet rag against the rim and exerting a radically inward force of 71 N. Discover the effec..
the speed of light in water is 2.25 x 108 ms. using einsteins thinking explain whether it is possible for a particle to
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