Question Number 24168 by Tinkutara last updated on 13/Nov/17 $$\mathrm{A}\:\mathrm{plank}\:\mathrm{of}\:\mathrm{mass}\:{M}\:\mathrm{kg}\:\mathrm{is}\:\mathrm{sliding}\:\mathrm{on}\:\mathrm{the} \\ $$$$\mathrm{smooth}\:\mathrm{horizontal}\:\mathrm{surface}\:\mathrm{with}\:\mathrm{constant} \\ $$$$\mathrm{velocity}\:\mathrm{of}\:\mathrm{10}\:\mathrm{ms}^{−\mathrm{1}} .\:\mathrm{A}\:\mathrm{another}\:\mathrm{block}\:\mathrm{of} \\ $$$$\mathrm{mass}\:{M}\:\mathrm{kg}\:\mathrm{is}\:\mathrm{gently}\:\mathrm{placed}\:\mathrm{on}\:\mathrm{it}.\:\mathrm{The} \\ $$$$\mathrm{coefficient}\:\mathrm{of}\:\mathrm{friction}\:\mathrm{between}\:\mathrm{the} \\ $$$$\mathrm{block}\:\mathrm{and}\:\mathrm{the}\:\mathrm{upper}\:\mathrm{surface}\:\mathrm{of}\:\mathrm{the}\:\mathrm{plank} \\ $$$$\mathrm{is}\:\mathrm{0}.\mathrm{2}.\:\mathrm{Assuming}\:\mathrm{that}\:\mathrm{plank}\:\mathrm{is}\:\mathrm{long} \\ $$$$\mathrm{enough}\:\mathrm{such}\:\mathrm{that}\:\mathrm{the}\:\mathrm{block}\:\mathrm{does}\:\mathrm{not}\:\mathrm{fall}…
Question Number 24164 by Tinkutara last updated on 13/Nov/17 $$\mathrm{Five}\:\mathrm{moles}\:\mathrm{of}\:\mathrm{an}\:\mathrm{ideal}\:\mathrm{gas}\:\mathrm{expand} \\ $$$$\mathrm{isothermally}\:\mathrm{and}\:\mathrm{reversibly}\:\mathrm{from}\:\mathrm{a} \\ $$$$\mathrm{pressure}\:\mathrm{of}\:\mathrm{10}\:\mathrm{atm}\:\mathrm{to}\:\mathrm{2}\:\mathrm{atm}\:\mathrm{at}\:\mathrm{300}\:\mathrm{K}. \\ $$$$\mathrm{What}\:\mathrm{is}\:\mathrm{the}\:\mathrm{largest}\:\mathrm{mass}\:\left(\mathrm{approx}\right) \\ $$$$\mathrm{which}\:\mathrm{can}\:\mathrm{be}\:\mathrm{lifted}\:\mathrm{through}\:\mathrm{a}\:\mathrm{height}\:\mathrm{of} \\ $$$$\mathrm{1}\:\mathrm{m}\:\mathrm{in}\:\mathrm{this}\:\mathrm{expansion}? \\ $$ Commented by Tinkutara…
Question Number 24161 by Tinkutara last updated on 13/Nov/17 $$\mathrm{A}\:\mathrm{door}\:\mathrm{is}\:\mathrm{hinged}\:\mathrm{at}\:\mathrm{one}\:\mathrm{end}\:\mathrm{and}\:\mathrm{is}\:\mathrm{free} \\ $$$$\mathrm{to}\:\mathrm{rotate}\:\mathrm{about}\:\mathrm{a}\:\mathrm{vertical}\:\mathrm{axis}.\:\mathrm{Does}\:\mathrm{its} \\ $$$$\mathrm{weight}\:\mathrm{cause}\:\mathrm{any}\:\mathrm{torque}\:\mathrm{about}\:\mathrm{this} \\ $$$$\mathrm{axis}?\:\mathrm{Give}\:\mathrm{reason}\:\mathrm{for}\:\mathrm{your}\:\mathrm{answer}. \\ $$ Commented by Tinkutara last updated on 13/Nov/17…
Question Number 24149 by ajfour last updated on 13/Nov/17 Answered by mrW1 last updated on 13/Nov/17 $${x}_{\mathrm{1}} ={s}_{\mathrm{1}} \\ $$$${y}_{\mathrm{1}} =\mathrm{0} \\ $$$${x}_{\mathrm{2}} ={x}_{\mathrm{1}} +{s}_{\mathrm{2}}…
Question Number 24127 by math solver last updated on 12/Nov/17 Commented by math solver last updated on 12/Nov/17 $$\mathrm{ques}.\mathrm{2}? \\ $$ Answered by Physics lover…
Question Number 89661 by Mr.Panoply last updated on 18/Apr/20 $${The}\:{Area}\:{of}\:{the}\:{triangle}\:{is}\:\mathrm{9}{x}^{\mathrm{2}} \:−\mathrm{12}{x}+\mathrm{4}. \\ $$$${compute}\:{its}\:{perimeter}? \\ $$ Commented by mr W last updated on 19/Apr/20 $${how}? \\…
Question Number 24125 by math solver last updated on 12/Nov/17 Commented by math solver last updated on 12/Nov/17 $$\mathrm{ques}.\mathrm{2}? \\ $$ Answered by ajfour last…
Question Number 89626 by 174 last updated on 18/Apr/20 Commented by john santu last updated on 18/Apr/20 $$\Phi\:{the}\:{golden}\:{ratio}? \\ $$ Terms of Service Privacy Policy…
Question Number 89620 by askask last updated on 18/Apr/20 $${x}=^{{c}−\mathrm{1}} \sqrt{\frac{{ay}−{bz}}{{cdy}}} \\ $$$$ \\ $$$$\mathrm{What}\:\mathrm{will}\:\mathrm{happen}\:\mathrm{to}\:\boldsymbol{{x}}\:\mathrm{when}\:\boldsymbol{{a}}\:\mathrm{increses}? \\ $$$$\mathrm{Explain}. \\ $$ Terms of Service Privacy Policy Contact:…
Question Number 24078 by math solver last updated on 12/Nov/17 Commented by math solver last updated on 12/Nov/17 $$\mathrm{ques}\:.\:\mathrm{13},\:\mathrm{14},\mathrm{15}\:\mathrm{plz}\:? \\ $$ Commented by mrW1 last…