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A 216-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 32.5° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.758, and the log has anacceleration of 0.698 m/s2. Find the tension in the rope.
If 3.43×108 electrons flowthrough the ground wire to Earth and the ground wire is thenremoved, what is the net charge on the electroscope?
question1a carnot engine operates with an effectiveness of 24.0 percent as the temperature of its cold reservoir is 290
A parallel-plate capacitor has an area of 6.00 cm2, and the plates are separatedby 2.00 mm with air between them. The capacitor stores a charge of 500 pC.
There are three masses arranged on the vertexes of an equilateral triangle with side L. what is the speed of each mass at infinity
A 1800 kg car is moving westward with a speed of 26 m/s, and a 2900 kg truck is traveling east with a speed of 14 m/s. Find the velocity of the center of mass of the system
A battery with an emf of 12.0 V shows a terminal voltage of 11.5V when operating in a circuit with two lightbulbs rated at 3.0 W, What is the battery's internal resistance
A uniform electric field, E = -50 N/C, fills a region of space. A partcicle with mass, m = 0.025 kg, bearing charge, q = 1mC, Determine where and when the particle crosses the x-axis
if you know the temperature of a star how would you find its wavelength? say the temperature of a star is 30000k what
The acceleration of a bus is given by ax(t)=?t, where ? = 1.26m/s3 is a constant, If the bus's position at time t1 = 1.12s is 6.01m , what is its position at time t2 = 2.13s
Several children are on a sled pulled by a four-wheeler across a level snow-covered field. determine the work done on the sled by the tension in the rope in 10.0 s
A curve in a highway has radius of curvature 120 m and is banked at 2.8°. what is the safest speed to go around the curve
The diffusion constant for the alcohol ethanol in water is 1.24 10-9 m2/s. A cylinder has a cross-sectional area of 3.85 cm2 and a length of 1.86 cm. what mass of ethanol diffuses through the cylinder
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