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An object is projected along the normal to an inclined surface of inclination θ with speed v. The time in which it lands back on the incline is

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An object is projected along the normal to an inclined surface of inclination θ with speed v. The time in which it lands back on the incline is

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A copper wire of a diameter of 1.02 mm carries a current of 1.7 amp. The drift velocity (vd) of electrons in the wire is (The number density of electrons in copper = 8.5×10^28 m^3.)

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A copper wire of a diameter of 1.02 mm carries a current of 1.7 amp. The drift velocity (vd) of electrons in the wire is (The number density of electrons in copper = 8.5×10^28 m^3.)

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An object undergoes an acceleration of 8ms^-2 starting from rest. Find the distance travelled in 4 seconds.

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An object undergoes an acceleration of 8ms^-2 starting from rest. Find the distance travelled in 4 seconds.

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The activity of a radioactive substance is 4700 per minute.

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The activity of a radioactive substance is 4700 per minute.

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Solid A is a very hard electrical insulator in solid as well as in molten state and melts at an extremely high temp. What type of solid is it?

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How far away from the surface of the earth, does the acceleration due to gravity will be reduced by 36% of its value on the surface of the earth if the radius of the earth is 6400 km?

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