Question Number 23069 by Tinkutara last updated on 25/Oct/17 $$\mathrm{Why}\:\mathrm{ionic}\:\mathrm{radii}\:\mathrm{of}\:^{\mathrm{35}} \mathrm{Cl}\:<\:^{\mathrm{37}} \mathrm{Cl}^{−} ? \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 154142 by EDWIN88 last updated on 14/Sep/21 Answered by mr W last updated on 14/Sep/21 $${y}={a}\left({x}−\mathrm{4}\right)\left({x}+\mathrm{2}\right)^{\mathrm{2}} \\ $$$$\mathrm{8}={a}\left(−\mathrm{4}\right)\left(+\mathrm{2}\right)^{\mathrm{2}} \:\Rightarrow{a}=−\frac{\mathrm{1}}{\mathrm{2}} \\ $$$${y}=−\frac{\mathrm{1}}{\mathrm{2}}\left({x}−\mathrm{4}\right)\left({x}+\mathrm{2}\right)^{\mathrm{2}} \\ $$$$\frac{{dy}}{{dx}}=−\frac{\mathrm{1}}{\mathrm{2}}\left[\left({x}+\mathrm{2}\right)^{\mathrm{2}}…
Question Number 88603 by hovero clinton last updated on 11/Apr/20 Answered by TANMAY PANACEA. last updated on 11/Apr/20 $${x}={sina} \\ $$$$\int_{\mathrm{0}} ^{\frac{\pi}{\mathrm{2}}} \frac{{lnsina}×{cosada}}{\left(\mathrm{1}+\mathrm{8}{sin}^{\mathrm{2}} {a}\right){cosa}} \\…
Question Number 23066 by Tinkutara last updated on 25/Oct/17 $$\mathrm{A}\:\mathrm{rocket}\:\mathrm{accelerates}\:\mathrm{straight}\:\mathrm{up}\:\mathrm{by} \\ $$$$\mathrm{ejecting}\:\mathrm{gas}\:\mathrm{downwards}.\:\mathrm{In}\:\mathrm{a}\:\mathrm{small} \\ $$$$\mathrm{time}\:\mathrm{interval}\:\Delta{t},\:\mathrm{it}\:\mathrm{ejects}\:\mathrm{a}\:\mathrm{gas}\:\mathrm{of}\:\mathrm{mass} \\ $$$$\Delta{m}\:\mathrm{at}\:\mathrm{a}\:\mathrm{relative}\:\mathrm{speed}\:{u}.\:\mathrm{Calculate}\:\mathrm{KE} \\ $$$$\mathrm{of}\:\mathrm{the}\:\mathrm{entire}\:\mathrm{system}\:\mathrm{at}\:{t}\:+\:\Delta{t}\:\mathrm{and}\:{t}\:\mathrm{and} \\ $$$$\mathrm{show}\:\mathrm{that}\:\mathrm{the}\:\mathrm{device}\:\mathrm{that}\:\mathrm{ejects}\:\mathrm{gas} \\ $$$$\mathrm{does}\:\mathrm{work}\:=\:\left(\frac{\mathrm{1}}{\mathrm{2}}\right)\Delta{mu}^{\mathrm{2}} \:\mathrm{in}\:\mathrm{this}\:\mathrm{time} \\ $$$$\mathrm{interval}\:\left(\mathrm{neglect}\:\mathrm{gravity}\right).…
Question Number 154138 by iloveisrael last updated on 14/Sep/21 Answered by EDWIN88 last updated on 14/Sep/21 Commented by EDWIN88 last updated on 14/Sep/21 $$\Rightarrow{Red}\:{area}\:=\:\frac{\mathrm{1}}{\mathrm{2}}×\frac{\mathrm{18}}{\mathrm{7}}×\frac{\mathrm{24}}{\mathrm{7}}=\frac{\mathrm{216}}{\mathrm{49}} \\…
Question Number 154133 by qaz last updated on 14/Sep/21 $$\mathrm{Given}\:\mathrm{f}\left(\mathrm{x}\right)=\sqrt[{\mathrm{3}}]{\mathrm{x}+\sqrt{\mathrm{1}+\mathrm{x}^{\mathrm{2}} }}+\sqrt[{\mathrm{3}}]{\mathrm{x}−\sqrt{\mathrm{1}+\mathrm{x}^{\mathrm{2}} }} \\ $$$$\mathrm{Find}\:\mathrm{f}^{−\mathrm{1}} \left(\mathrm{x}\right)=? \\ $$ Answered by EDWIN88 last updated on 14/Sep/21 $$\Leftrightarrow{y}−\sqrt[{\mathrm{3}}]{{x}+\sqrt{\mathrm{1}+{x}^{\mathrm{2}}…
Question Number 23061 by nawroozdawry last updated on 25/Oct/17 $$\int_{\mathrm{0}} ^{\infty} \mathrm{j}_{\mathrm{4}} \left(\mathrm{x}\right)\mathrm{dx}=? \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 88594 by mr W last updated on 11/Apr/20 $${solve}\:{for}\:{x}\in\mathbb{C} \\ $$$$\mathrm{cos}\:\left({x}\right)={a}+{bi} \\ $$ Commented by abdomathmax last updated on 11/Apr/20 $$\Rightarrow{ch}\left({ix}\right)\:={a}+{bi}\:\Rightarrow\frac{{e}^{{ix}} \:+{e}^{−{ix}} }{\mathrm{2}}={a}+{bi}\:\Rightarrow…
Question Number 23059 by Physics lover last updated on 25/Oct/17 Commented by Physics lover last updated on 25/Oct/17 $${In}\:{the}\:{arrangement}\:{shown}\:{here}\: \\ $$$${friction}\:{between}\:{the}\:{spool}\: \\ $$$$\left({of}\:{mass}\:{m},\:{moment}\:{of}\:{inertia}\:{I}\:\right) \\ $$$${and}\:{the}\:{plank}\:\left({of}\:{mass}\:{M}\right)…
Question Number 154131 by Rankut last updated on 14/Sep/21 $$ \\ $$A long distance runner runs 14km 30°north of east, 7km 60° north of west,…