Question Number 9635 by tawakalitu last updated on 22/Dec/16 $$\mathrm{A}\:\mathrm{body}\:\mathrm{of}\:\mathrm{mass}\:\mathrm{20g}\:\mathrm{performs}\:\mathrm{simple}\:\mathrm{harmonic} \\ $$$$\mathrm{motion}\:\mathrm{at}\:\mathrm{a}\:\mathrm{frequency}\:\mathrm{of}\:\mathrm{5Hz},\:\mathrm{at}\:\mathrm{a}\:\mathrm{distance} \\ $$$$\mathrm{of}\:\mathrm{10cm}\:\mathrm{from}\:\mathrm{the}\:\mathrm{mean}\:\mathrm{position}.\:\mathrm{its}\:\mathrm{velocity} \\ $$$$\mathrm{is}\:\mathrm{200cm}/\mathrm{s}.\:\:\mathrm{calculate} \\ $$$$\left(\mathrm{i}\right)\:\mathrm{Maximum}\:\mathrm{displacement}\:\mathrm{from}\:\mathrm{the}\:\mathrm{mean} \\ $$$$\mathrm{position} \\ $$$$\left(\mathrm{ii}\right)\:\mathrm{Maximum}\:\mathrm{velocity} \\ $$$$\left(\mathrm{iii}\right)\:\mathrm{Maximum}\:\mathrm{potential}\:\mathrm{energy}. \\…
Question Number 9636 by tawakalitu last updated on 22/Dec/16 $$\mathrm{The}\:\mathrm{distance}\:\mathrm{x}\:\mathrm{m}\:\mathrm{have}\:\mathrm{used}\:\mathrm{by}\:\mathrm{a}\:\mathrm{particle}\:\mathrm{in} \\ $$$$\mathrm{time}\:\mathrm{t}\:\mathrm{sec}\:\mathrm{is}\:\mathrm{described}\:\mathrm{by}\:\mathrm{the}\:\mathrm{equation} \\ $$$$\mathrm{x}\:=\:\mathrm{10}\:+\:\mathrm{12t}^{\mathrm{2}} \\ $$$$\mathrm{Find}\:\mathrm{the}\:\mathrm{average}\:\mathrm{speed}\:\mathrm{of}\:\mathrm{the}\:\mathrm{particle}\:\mathrm{between} \\ $$$$\mathrm{the}\:\mathrm{interval}\:\mathrm{t}\:=\:\mathrm{2}\:\mathrm{sec}\:\mathrm{and}\:\mathrm{t}\:=\:\mathrm{5}\:\mathrm{sec} \\ $$ Commented by ridwan balatif last…
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Question Number 9585 by reha bhansali last updated on 19/Dec/16 $$\frac{\mathrm{3}{x}−\mathrm{5}}{{x}+\mathrm{2}}=\frac{\mathrm{3}}{\mathrm{4}} \\ $$ Commented by ridwan balatif last updated on 19/Dec/16 $$\mathrm{12x}−\mathrm{20}=\mathrm{3x}+\mathrm{6} \\ $$$$\mathrm{9x}=\mathrm{26} \\…
Question Number 9560 by tawakalitu last updated on 15/Dec/16 Commented by tawakalitu last updated on 15/Dec/16 $$\mathrm{please}\:\mathrm{i}\:\mathrm{need}\:\mathrm{help}\:\mathrm{on}\:\mathrm{this}.\:\mathrm{urgent}.\:\mathrm{Thanks} \\ $$$$\mathrm{for}\:\mathrm{your}\:\mathrm{help}. \\ $$ Commented by FilupSmith last…
Question Number 75083 by Rio Michael last updated on 07/Dec/19 $${A}\:{function}\:{f}\:{is}\:{given}\:{by}\: \\ $$$$\:{f}\left({x}\right)\:=\:\begin{cases}{{x}^{\mathrm{2}} −\mathrm{3},\:\:\mathrm{0}\leqslant{x}<\mathrm{2}}\\{\mathrm{4}{x}−\mathrm{7},\:\mathrm{2}\leqslant{x}<\mathrm{4}}\end{cases} \\ $$$${is}\:{such}\:{that}\:{f}\left({x}\right)\:=\:{f}\left({x}\:+\:\mathrm{4}\right)\: \\ $$$${find}\:\:{f}\left(\mathrm{27}\right)\:{and}\:{f}\left(−\mathrm{106}\right). \\ $$ Answered by MJS last updated…
Question Number 9544 by tawakalitu last updated on 14/Dec/16 Answered by ridwan balatif last updated on 15/Dec/16 $$\mathrm{r}_{\mathrm{1}} =+\mathrm{22}.\mathrm{4cm}\:\mathrm{and}\:\mathrm{r}_{\mathrm{2}} =+\mathrm{46}.\mathrm{2}\:\mathrm{cm} \\ $$$$\frac{\mathrm{1}}{\mathrm{f}}=\left(\mathrm{n}−\mathrm{1}\right)\left(\frac{\mathrm{1}}{\mathrm{r}_{\mathrm{1}} }−\frac{\mathrm{1}}{\mathrm{r}_{\mathrm{2}} }\right) \\…
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