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Category: Vector

Question-201135

Question Number 201135 by 281981 last updated on 30/Nov/23 Answered by MM42 last updated on 30/Nov/23 $${SX}+{SM}=\left({m}+{n}\right)\left(\mathrm{4}{a}−{b}\right) \\ $$$$\frac{\mathrm{9}}{\mathrm{5}}{SM}=\left({m}+{n}\right)\left(\mathrm{4}{a}−{b}\right) \\ $$$$\frac{\mathrm{9}}{\mathrm{5}}\left({SP}+{PQ}+{QM}\right)=\left({m}+{n}\right)\left(\mathrm{4}{a}−{b}\right) \\ $$$$\frac{\mathrm{9}}{\mathrm{5}}\left(\frac{\mathrm{4}{a}−{b}}{\mathrm{2}}\right)=\left({m}+{n}\right)\left(\mathrm{4}{a}−{b}\right) \\ $$$$\Rightarrow{m}+{n}=\frac{\mathrm{9}}{\mathrm{10}}\:\:\checkmark\:\:\left(\mathrm{1}\right)…

two-weels-those-have-the-same-materials-with-radii-r-1-4-and-r-2-14-are-starting-to-move-on-a-surface-with-the-same-velocity-from-x-0-to-x-20-the-surface-has-no-friction-wich-one-arrives-faster-

Question Number 201107 by behi834171 last updated on 29/Nov/23 $${two}\:{weels},\:{those}\:{have}\:{the}\:{same}\:{materials}, \\ $$$${with}\:{radii}:\boldsymbol{{r}}_{\mathrm{1}} =\mathrm{4}\:{and}\:\boldsymbol{{r}}_{\mathrm{2}} =\mathrm{14} \\ $$$${are}\:{starting}\:{to}\:{move}\:{on}\:{a}\:{surface},{with} \\ $$$${the}\:{same}\:{velocity},{from}:\boldsymbol{{x}}=\mathrm{0}\:{to}\:\boldsymbol{{x}}=\mathrm{20}. \\ $$$${the}\:{surface}\:{has}\:{no}\:{friction}. \\ $$$${wich}\:{one}\:{arrives}\:{faster}? \\ $$$${any}\:{informations}\:{needed}? \\…

Question-199082

Question Number 199082 by samiksha last updated on 27/Oct/23 Answered by MathedUp last updated on 27/Oct/23 $$????\mathrm{I}\:\mathrm{can}'\mathrm{t}\:\mathrm{undertand}\:\mathrm{why}\:\mathrm{you}\:\mathrm{are}\:\mathrm{promoting}\: \\ $$$$\mathrm{the}\:\mathrm{School}\:\mathrm{here} \\ $$ Terms of Service Privacy…

Calcul-I-pi-2-0-ln-cost-1-sin-2-t-dt-

Question Number 197550 by Erico last updated on 21/Sep/23 $$\mathrm{Calcul}\:\:\:\mathrm{I}=\underset{\:\mathrm{0}} {\int}^{\:\frac{\pi}{\mathrm{2}}} \frac{\mathrm{ln}\left(\mathrm{cost}\right)}{\mathrm{1}+\mathrm{sin}^{\mathrm{2}} \mathrm{t}}\mathrm{dt} \\ $$ Answered by qaz last updated on 22/Sep/23 $${I}=\int_{\mathrm{0}} ^{\pi/\mathrm{2}} \frac{{ln}\mathrm{cos}\:{t}}{\mathrm{2}−\mathrm{cos}\:^{\mathrm{2}}…

Question-195722

Question Number 195722 by Ari last updated on 08/Aug/23 Commented by Ari last updated on 08/Aug/23 Two metal blocks are placed on top of each other as in the figure. They are released in a vacuum, falling together freely under the action of the earth's gravitational field. What is the force acting on the 3 kg metal block during the fall Commented by mr W last updated on 08/Aug/23…