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a rolling ball covers a distance of 650m in 20 min. its speed in kilometer per hour will be what?

ina cathode ray tube a beam of electron can be moved up and down by changing the poential difference of_____. a) X-plates b) cathode c) Y-plates d) both X and cathodes

Q:What happens to the pressure of particles in the container when it is heated.explain. Q:A pressure of 2200Kpa is exerted by the particles in the container on the wall of area 25cm2. find the force exerted by the particle.