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N identical capacitors are joined in parallel and the combination is charged to a potential V. Now if they are separated and then joined in series, will the energy of combination remain the same or will it increase? Explain why.

Vector A has magnitude of 13.9 and is 225° counter-clockwise up from the x-axis. What are the x- and y-components of the vector?

consider the energy and fluctuation in energy of an arbitrary system in contact with a heat reservior at absolute temperature T = 1/KB.calculate dispersion of energy

The temperature at which the tungsten filament of a 12 V and 36W lamp operates is

1730o

C. If the temperature coefficient of resistance of tungsten is

6×10−3

/K, find the resistance of the lamp at a room temperature of 20$^{o}$C

1730o

C. If the temperature coefficient of resistance of tungsten is

6×10−3

/K, find the resistance of the lamp at a room temperature of 20$^{o}$C

Calculate the change in internal energy of 2kg of water at 90 degree celcius when it is changed to $3.30m^{3}$ of steam at $100 ^{o}$C. The whole process occurs at atmospheric pressure. The latent heat of vaporization of water is $2.26\times10^{6}$ J/kg.

find the flux density of magnetic field to cause 62.5eV electron to move in a circular path of radius 5cm.

an ion of mass 1.8 * 〖10〗^(-25) kg carrying a charge 4*〖10〗^(-16)c after being accelerated through a potential difference of 400V enters a uniform magnetic field of intensity 2*〖10〗^(-2) T

perpendicular to its direction of motion . calculate the radius of path described by the ion.

please give proper explanation about the formula that you will use.

perpendicular to its direction of motion . calculate the radius of path described by the ion.

please give proper explanation about the formula that you will use.

an electron moving at right angles to a uniform magnetic field completes a circular orbit in 〖10〗^(-6) sec. calculate the value of magnetic field .

please give explaination for the formula that used.

please give explaination for the formula that used.

the magnitude of velocities of two alpha particles A and B entering a uniform magnetic field perpendicularly, are in the ratio 6:1. on entering the field , they move in circular paths. find out the ratio of radii of their paths.

solve it by giving proper explaination about the formula.

solve it by giving proper explaination about the formula.

Suppose your average speed is 22 m/s for the first 130 minutes of a 3 hour trip. If you want your average speed for the whole trip to be 18 m/s, what must be the average speed for the remaining 50 minutes of your trip?

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