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The electric field part of an electromagnetic wave in a medium is represented by Ex = 0 Ey=2.5N/C cos[(2π × 106rad/s)t−(π × 10−2rad/mx)]

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Two forces, each of magnitude F have a resultant of magnitude F . What is the angle between the two forces?

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Two forces, each of magnitude F have a resultant of magnitude F . What is the angle between the two forces?

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To an evacuated vessel with a movable piston under a total pressure of 1 atm, 0.1 mol of He and an unknown compound (vapour pressure 0.68 atm at 0℃) are introduced. Considering the ideal gas behaviour, the total volume (in litre) of the gases at 0℃ is close to:

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To an evacuated vessel with a movable piston under a total pressure of 1 atm, 0.1 mol of He and an unknown compound (vapour pressure 0.68 atm at 0℃) are introduced. Considering the ideal gas behaviour, the total volume (in litre) of the gases at 0℃ is close to:

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A planet revolves around the sun in an elliptical orbit. If Vp and Va are the velocities of the planet at the perigee and apogee respectively, then the eccentricity of the elliptical orbit is given by:

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A planet revolves around the sun in an elliptical orbit. If Vp and Va are the velocities of the planet at the perigee and apogee respectively, then the eccentricity of the elliptical orbit is given by:

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Why are alloys used for making standard resistance coils?

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Why are alloys used for making standard resistance coils?

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An ac source of angular frequency ω is fed across a resistor R and a capacitor C in series. The current registered is I . If now the frequency of the source is changed to ω/3 (but maintaining the same voltage), the current in the circuit is found to be halved. The ratio of the reactance to resistance at the original frequency ω is given as √ x/5 . Find x .

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