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27.A water jet, whose cross sectional are is 'a' strikes awall making an angle '0' with the normal andrebounds elastically. The velocity of water of density'd' is v. Force exerted on wall is(1) 2 av'd cos0(3) 2 avd cos0(2) 2 av'd sin0(4) avd cos0

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assume density as rho , for this solution



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