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A student decides to move a box of books into her dormitory room bypulling on a rope attached to the box. She pulls with a force of110.0 N at an angle of 23.0° above thehorizontal. The box has a mass of 25.0 kg, and the coefficient of kinetic friction between box and floor is 0.300.
a) Find the acceleration of the box.
b) The student now pulls the moving box up a 10.0° incline,keeping her 110.0 N force directed at23.0° above the line of the incline. If the coefficient of friction isunchanged, what is the new acceleration of the box?
julie throws a ball to her friend sarah. the ball leaves julies hand a distance 1.5 meters above the ground with an
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Starting from the definition of the spherical harmonics in terms of Legendre polynomials, derive Y30(θ,φ), Y31(θ,φ), and Y32(θ,φ). Write down the differential operators corresponding to the L2 and Lz operators in spherical coordinates.
prepare a 750- to 1050-word paper in which you analyze your articles. address the following define consumer psychology.
He wants to row directly across a river 252 wide with a constant of 1.33 m/s. Illustrate what direction should he aim his boat, and low long will it take him to cross the river
A source emits sound uniformly in all directions. A radialline is drawn from this source. On this line, determine the radialpositions of two points, 1.28 m apart, such that the intensitylevel at one point is 2.46 dB greater than that at the other.
Two trains are traveling toward each other in still air at 27.6 m/s relative to the ground. One train is blowing a whistle at 330 Hz. The speed of sound is 343 m/s.
Consider a 2.4 kg object sliding along a horizontal frictionless surface at 5.2 m/s. Find initial and final elastic potential energies
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