An isolated parallel-plate capacitor has an inital capacitance of 400nF and a charge of 5uC. Find the potential energy if the stored charge is doubled. A. - 125uJ B. 125uJ C. 93.8uJ D. 31.3uJ

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A: Given  Radii of inner loop ,r1 = 28.9 cm  Radii of outer loop ,r2 = 37.4 cm  Current flowing through...

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A: Given that :-          y = 3.00 cos pi(0.02 x + 9.00 t)   where t→in s and x→ in cmy = 3.00 cos(0.02...

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Q: In a classic comedy gag, a clown gets a pie thrown at their face. The pie weighs 0.9097 kg and flies...

A: mass (m) = 0.9097 kg initial velocity (u) = 2.91 msfinal velocity (v) = 0 mstime (t) = 621ms= 0.621 ...

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Q: 5. Circular Orbits. Suppose we launch a satellite in a circular orbit, and want it to revolve once a...

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A: Answer:- D) is None  Explanation- The Angela moves the box at a constant speed, therefore there is n...

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Q: In the figure, an electron moves at speed v = 110 m/s along an x axis through uniform electric and m...

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Q: A cube of edge length e = 3.00 cm is positioned as shown in the figure below. A uniform magnetic fie...

A: Given Information:- Length of edge of the cube is l=3.00 cm=3.00 cm×1 m100 cm=0.030 m Magnetic field...

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Q: Compute for the y-component of 21.2248-unit vector directed 214.7817 degrees with respect to the pos...

A: given: magnitude of vector = 21.2248 units angle from +ve x axis = 214.7817o

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Q: For vectors B = 22 – 6ý and A = - 5a- 4ŷ calculate: %3D - a. Ā + B = |Ã + Ē| = %3D Direction in degr...

A: Given value--- A = -5x - 4y. B = -2x -6y. We have to find--- magnitude and direction of A + B. ma...

Q: Part B The figure (Figure 1) shows some equipotentials in the T-y plane. What is the magnitude of th...

A: equipotentials are shown in the figure in a x-y plane   

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Q: A metal rod is neutral at first. It was placed in contact with a positively charged conductor. 2 bal...

A: Initially metal rod is neutral at first and then it was placed in contact with positively charged so...

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A: Given  Speed N=520rpm  

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Q: block is pushed up an incline by a horizontal force F. In this situation, the work done by the force...

A: Work done = FS Cosθ Where F is the force S = displacement  

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Q: ma tug-or-war game on one campus, 15 students pull on a rope at both ends in an effort to displace t...

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Q: 9. An infinitely long nonconducting cylinder of radius R carries a uniform volume charge density of ...

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Q: A standard flashlight battery can deliver about 1.5 W-h of energy before it runs down. (a) If a batt...

A: energy delivered by a battery before running down = 1.5 W-hr   

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Q: What does E = mc2 mean? How would you explain it to your friends who are not in this class?

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Q: A day during which the atmospheric temperature was 40oC would be described as (a) below freezing. (b...

A: A day during which the atmospheric temperature was 40oC would be described as

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Q: If the forces along the y-axis are equal in magnitude, what is the y-component of the net force?

A: Given : Forces in x-direction , F1 = 275 N  F2 = 395 N  f = 560 N (in -x direction)  Force in y-dire...

Q: A 65.1-cm-diameter coil consists of 20 turns of circular copper wire 8.67 mm in diameter. A uniform ...

A: GivenDiameter of coil ,D=65.1 cm=0.651 mnumber of turns of copper wire ,N=20 turnsDiameter of wire ,...

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Q: What is the efficiency of the heat engine?

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Q: There are 5,280 feet in a mile. If you have slowed down and are now traveling 40 feet per second and...

A: Given: The speed of the car is 40 ft/s. The time taken to push the break is 0.5 s.

Q: An incoming tennis ball (mass 0.060 kg) has a speed of 14 m/s. The player hits the ball with a racqu...

A: Given data:  Mass (m) = 0.060 kg Initial velocity (Vi) = 14 m/s Final velocity (Vf) = 30 m/s, in opp...

Dielectric Constant Of Water

Water constitutes about 70% of earth.  Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.

Electrostatic Potential and Capacitance

An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.