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While helping an astronomy professor, you find a binary star system in which the two stars are in circular orbits about the system's center of mass. From their color and brightness, you decide that each star has the same mass as our Sun. The orbital period of the pair is 43.3 days, based on the oscillation of brightness observed as one star occludes (hides) the other. From this information you are able to ascertain the distance among the stars. Compute the distance between the stars.
A 71-kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12 m. what is the normal force exerted by the snow on the skier at point B
Is it correct to say the difference in the patterns produced by monochromatic and white light is caused by the fact that monochromatic light waves interfere with each other when they pass through a diffraction grating, while the rays of white light d..
How much work is done on the toboggan by the tension force? Explain how much work is done if the same tension is directed parallel to the snow?
Two earthquake waves of the same frequency travel through thesame portion of the Earth, but one is carrying twice the energy. What is the ration of the amplitudes of the two waves
a solid disk of mass m3kg and radius r.05m rotates around an axis which is perpendiuclar to the plane of the disk and
A 66 kilogram skier coasts up as now-covered hill that makes an angle of 25 degree with the horizontal. The initial speed of the skier is 6.6 m/s. Determine the work done by the kinetic frictional force that acts on the skis
Four wires meet at a junction. In two of the wires currents I1 = 1.51 A and I2 = 2.99 A enter the junction. Find the current in the fourth wire
A solid, uniform ball rolls without slipping up a hill, asshown in the figure . At the top of the hill, it is moving horizontally; then it goes over the vertical cliff. How fast is it moving just before it lands
A proton, initially traveling in the +x-direction with a speed of 5.50×10^5m/s , enters a uniform electric field directed vertically upward. After traveling in this field for 4.02×10^7s
a 6.0-kg mass at the end of a spring vibrates 3.0 times per second with an amplitude of 0.13m. determine a the velocity
a sealed tank containing seawater to a height of 10.0 also contains air above the water at a gauge pressure of 3.25 .
two stationary positive point charges charge 1 of magnitude 3.20nc and charge 2 of magnitude 1.50nc are separated by a
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