Physics, 03.01.2020 05:31 whitethunder05
Agirl pushes a 10.0kg sled at a constant speed by applying a force of 75n at an angle of 30 degrees with respect to the horizontal. the sled is pushed over a distance of 15 meters. how much work is done by the force of friction?
Answers: 2
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Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.
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Physics, 22.06.2019 09:50
If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?
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Physics, 22.06.2019 13:30
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
Physics, 22.06.2019 15:00
Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants
Answers: 2
Agirl pushes a 10.0kg sled at a constant speed by applying a force of 75n at an angle of 30 degrees...
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