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Q. An electric dipole is formed from charges spaced 6 apart. The dipole is at the origin, oriented along the y-axis. What is the electric field strength at the points?
Q. A stunt man whose mass is 70 kg swings from the end of a 3.10 m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal; find the tensions in the rope that are necessary to make him follow his circular path at each of the following points.
(a) At the beginning of his motion
(b) at a height of 1.5 m above the bottom of the circular arc
(c) at the bottom of the arc
explain the separation between the two sources. What is the displacement of the car between 3 P.M. and 6 P.M.
What is tension in the wire
suppose that the gold ions carry one elementary unit of positive charge.
A force of k is applied to an object for a small fraction of a second, t_k, less than the duration of one frame, t_f. Our simulation doesn't support applying forces for less than an entire frame, so if we wanted to simulate the effect of force k over..
A child is riding across a rough field on a sled. Together, she and the sled have a mass of 73 kg. The sled is being pulled by her brother at an angle of 16º with a force of 356 Newtons. What is her acceleration if the coefficient of kinetic friction..
A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to ground.
What is the decibel level required for human perception
Two sound speakers separated by a distance of 3-meters, are driven in phase by same audio amplifier. A listener sits directly in front of one speaker at a distance of 4 meters from it so that listener and speakers form a right triangle.
A simple generator has a 620-loop square coil 21cm on a side. How fast must it turn in the 0.690 T field to produce a 140 V peak output.
A person driving her car at 57km/h approaches an intersection just as the traffic light turns yellow. She knows that yellow light lasts only 2.0 s before turning to red, and she is 30m away from the near side of the intersection.
What additional experiment can help you decide between these two possibilities.
The emissivity of tungsten is 0.350. A tungsten sphere with a radius of 1.19 is suspended within a large evacuated enclosure whose walls are at a temperature of 285.0 . What power input is needed to maintain the sphere at a temperature of 2500.0 i..
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