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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
A car is travelling at a constant speed of 32m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from ramp.
What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other? (Hint: Use charge conservation and solve for one of the initial charges. You would end up with a quadratic equation. The solutions g..
Illustrate the role of the Sun's differential rotation in the formation of sunspots. Explain (briefly) the 22 year solar cycle, stating its essential features. Estimate the y-component of magnetic force.
What is the terminal speed for an 84.00 skier going down a 38.0 degree snow-covered slope on wooden skis = 0.06? Assume the skier is 1.70 m tall and 0.500 m wide.
suppose that the cross section of the hose opening is circular with a radius of 1.5 centimeters.
Find out the type of mirror and how far the object is
A flat sheet of crystalline quartz has a thickness of 3.7cm. It is on top of a flat sheet of diamond that has a thickness of 2.6cm. Light strikes the crystalline quartz vertically and travels through it and then through the diamond.
A disk of radius R = 9 cm is pulled along a friction less surface with a force of F = 15 N by a string wrapped around the edge. At the instant when d = 28 cm of string has unwound off the disk, what is torque exerted about the center of the disk.
A 56.0 resistor is connected in parallel with a 117.0 resistor. This parallel group is connected in series with the 27.0 resistor. The total combination is connected across a 15.0 V battery. What is the current of the 117 resistor? What is the power ..
An 8,000 rocket is shot straight up from the Earth's surface with the initial speed of 800 m/s. How high does it go.
What is the velocity of the plank relative to the surface of ice.
The coefficient of expansion of iron and zinc
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