Short EPE Question

Four identical charges (+2.9 C each) are brought from infinity and fixed to a straight line. Each charge is 0.48 m from the next. Determine the electric potential energy of this group.

Positive charge Q is distributed evenly on y axis between y = 0 and y = a. A negative charge -Q is located at a distance x from the rod on the x-axis. Find (a) the electric field and (b) Potential at the point of the negative charge.

Positive charge Q is distributed evenly on y axis between y = 0 and y = a. A negative charge -Q is located at a distance x from the rod on the x-axis. Find (a) the electric field and (b) Potential at the point of the negative charge. Diagram attached

Magnitude of a sphere's point of charges

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Spherical insulators & conductors & determining charges

Spherical insulators & conductors & determining charges .See attached file for full problem description.

Finding the electric field of a solid conducting shere

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Waves and oscillations: Stretched string

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Positive charge distributed along y axis & negative along x axis

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What current does he register there if the temperature is -88.0 degree celsius?

While taking photographs in death valley on a day when the temperature is 58.0 degree celsius, Bill hiker finds that a certain voltage applied to a copper wire produces a current of 1.000A. Bill then travels to Antarctica and applies the same voltage to the same wire. What current does he register there if the temperature is -88 ...continues

2 Short Physics Problems

Please see attached word document. Pleas only use introductory formulas, not just solving but showing how to do problems. Also, show each step in algebraic calculations. Thanks.

Magnetic field at the core of a solenoid

A solenoid that is 75 cm long produces a magnetic field of 2.1 T within its core when it carries a current of 6.8 A. How many turns of wire are contained in this solenoid?