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Astronomers have discovered a planetary system orbiting the star Upsilon Andromedae, which is at a distance 4.2 multiplied by 1017 m from the earth. One planet is believed to be located at a distance of 1.6 1011 m from the star. Using visible light with a vacuum wavelength of 550 nm, what is the minimum necessary aperture diameter that a telescope must have so that it can resolve the planet and the star?
What angle does the rope make with the horizontal.
Compute the x-coordinate of the center of mass XCM. Suppose that the mass of the rod is small enough to be ignored in your calculation. Your answers must be accurate to within 0.1 cm.
A car traveling at 23.0m/s runs out of gas while traveling up a 23.0(degree) slope, How far up the hill will it coast before starting to roll back down
A 1500 kg elevator starts from rest and moves upward with constant acceleration for 4.0 s until it reaches its operating speed of 2.0 m/s. Calculate the power required by the elevator motor while the elevator is operating at its operating speed
One end of a metal rod is in contact with a thermal reservoir at 691 K, and the other end is in contact with a thermal reservoir at 105 K. what is the change in entropy of the rod
A student is sleeping under a small goose-down comforter that has coefficient of thermal conductivity of 0.025 W/m °C. what is the rate of heat flow through the comforter
A bicyclist rides 3.01 km due east, while the resistive force from the air has a magnitude of 7.71 N and points due west. Find the work done by the resistive force during the round trip
People who suffer from cataracts may have the lenses in their eyes replaced by artificial lenses. what is the refractive power of the glasses she will need to see the object clearly
question1a cardinal richmondena cardinalis of mass 4.00times10-2kg and baseball of mass 0.143kg have the same kinetic
Find out an angle of the velocity vector
An unstable particle with a mass equal to 3.34x10^-27 kg is initially at rest. Find the masses of the fragments
The string in a yo-yo is wound around an axle of radius 0.531 cm. The yo-yo has both rotational and translational motion, like a rolling object, What is the speed of the yo-yo when it reaches the distance of 1.42 m
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