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An inductor coil stores 64 J of magnetic field energy and dissipates energy at the rate of 640 W when a current of 8A is passed through it.

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If vector a,b,c are three mutually perpendicular vectors equally inclined to vector a + b + c at angle θ, then find the value of 36 cos^2 2θ.

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The mean of 6 numbers is 6.5 and its variance is 10.25. If 4 numbers are 2,4,5 and 7, then find the other two.

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The initial velocity vi required to project a body vertically upward from the surface of the earth to reach a height of 10R, where R is the radius of the earth,

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The radius in kilometer to which the present radius of earth (R = 6400 km)

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which of the following is most easily economically refined by fractional distillation

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If P4O10 + HNO3 are mixed in 1:4 ratio , then nature of nitrogen oxide obtained will be

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