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Q1. Revolutionary war cannon, with a mass of 2220 kg, fires a 22.7 kg ball horizontally. The cannonball has a speed of 126 m/s speed of the cannon immediately after it was fired? = 1.28 m/s.

The same explosive charge is used, so the total energy of the cannon plus cannonball system remains the similar. Disregarding friction, how much faster will the ball travel if the cannon were mounted rigidly and all other parameters remained the same?

Reply in units of m/s.

Q2. The parallel metal plate of a capacitor is separated by a distance of 0.5cm and is connected to a 90v battery. Discover an electric field between them and the surface charge density?

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Category:- Physics
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