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A-Juggler-is-maintaining-4-balls-in-motion-making-each-in-term-to-rise-to-height-of-20-m-Which-of-following-position-is-not-possible-for-the-balls-when-one-ball-is-just-leaving-his-hand-1-5-m-2-

Question Number 15117 by Tinkutara last updated on 07/Jun/17 $$\mathrm{A}\:\mathrm{Juggler}\:\mathrm{is}\:\mathrm{maintaining}\:\mathrm{4}\:\mathrm{balls}\:\mathrm{in} \\ $$$$\mathrm{motion}\:\mathrm{making}\:\mathrm{each}\:\mathrm{in}\:\mathrm{term}\:\mathrm{to}\:\mathrm{rise}\:\mathrm{to} \\ $$$$\mathrm{height}\:\mathrm{of}\:\mathrm{20}\:\mathrm{m}.\:\mathrm{Which}\:\mathrm{of}\:\mathrm{following} \\ $$$$\mathrm{position}\:\mathrm{is}\:\mathrm{not}\:\mathrm{possible}\:\mathrm{for}\:\mathrm{the}\:\mathrm{balls}, \\ $$$$\mathrm{when}\:\mathrm{one}\:\mathrm{ball}\:\mathrm{is}\:\mathrm{just}\:\mathrm{leaving}\:\mathrm{his}\:\mathrm{hand}? \\ $$$$\left(\mathrm{1}\right)\:\mathrm{5}\:\mathrm{m} \\ $$$$\left(\mathrm{2}\right)\:\mathrm{All}\:\mathrm{position}\:\mathrm{are}\:\mathrm{possible} \\ $$$$\left(\mathrm{3}\right)\:\mathrm{15}\:\mathrm{m} \\…

A-balloon-ascends-vertically-with-a-constant-speed-for-5-seconds-when-a-pebble-falls-from-it-reaching-the-ground-in-5-s-The-speed-of-the-balloon-is-

Question Number 15116 by Tinkutara last updated on 07/Jun/17 $$\mathrm{A}\:\mathrm{balloon}\:\mathrm{ascends}\:\mathrm{vertically}\:\mathrm{with}\:\mathrm{a} \\ $$$$\mathrm{constant}\:\mathrm{speed}\:\mathrm{for}\:\mathrm{5}\:\mathrm{seconds},\:\mathrm{when}\:\mathrm{a} \\ $$$$\mathrm{pebble}\:\mathrm{falls}\:\mathrm{from}\:\mathrm{it}\:\mathrm{reaching}\:\mathrm{the}\:\mathrm{ground} \\ $$$$\mathrm{in}\:\mathrm{5}\:\mathrm{s}.\:\mathrm{The}\:\mathrm{speed}\:\mathrm{of}\:\mathrm{the}\:\mathrm{balloon}\:\mathrm{is}? \\ $$ Answered by ajfour last updated on 07/Jun/17…

Drops-are-falling-regularly-from-a-water-tap-at-a-height-of-9-m-from-the-ground-The-4-th-drop-is-about-to-fall-from-the-tap-when-the-1-st-hit-the-ground-Find-the-distance-between-2-nd-and-3

Question Number 15115 by Tinkutara last updated on 07/Jun/17 $$\mathrm{Drops}\:\mathrm{are}\:\mathrm{falling}\:\mathrm{regularly}\:\mathrm{from}\:\mathrm{a}\:\mathrm{water} \\ $$$$\mathrm{tap}\:\mathrm{at}\:\mathrm{a}\:\mathrm{height}\:\mathrm{of}\:\mathrm{9}\:\mathrm{m}\:\mathrm{from}\:\mathrm{the}\:\mathrm{ground}. \\ $$$$\mathrm{The}\:\mathrm{4}^{\mathrm{th}} \:\mathrm{drop}\:\mathrm{is}\:\mathrm{about}\:\mathrm{to}\:\mathrm{fall}\:\mathrm{from}\:\mathrm{the} \\ $$$$\mathrm{tap}\:\mathrm{when}\:\mathrm{the}\:\mathrm{1}^{\mathrm{st}} \:\mathrm{hit}\:\mathrm{the}\:\mathrm{ground}.\:\mathrm{Find} \\ $$$$\mathrm{the}\:\mathrm{distance}\:\mathrm{between}\:\mathrm{2}^{\mathrm{nd}} \:\mathrm{and}\:\mathrm{3}^{\mathrm{rd}} \:\mathrm{drop}. \\ $$ Answered…

Small-steel-balls-falls-from-rest-through-the-opening-at-A-at-the-steady-rate-of-n-balls-per-second-Find-the-vertical-separation-h-of-two-consecutive-balls-when-the-lower-one-has-dropped-d-meters-

Question Number 15102 by Tinkutara last updated on 07/Jun/17 $$\mathrm{Small}\:\mathrm{steel}\:\mathrm{balls}\:\mathrm{falls}\:\mathrm{from}\:\mathrm{rest}\:\mathrm{through} \\ $$$$\mathrm{the}\:\mathrm{opening}\:\mathrm{at}\:{A},\:\mathrm{at}\:\mathrm{the}\:\mathrm{steady}\:\mathrm{rate}\:\mathrm{of} \\ $$$${n}\:\mathrm{balls}\:\mathrm{per}\:\mathrm{second}.\:\mathrm{Find}\:\mathrm{the}\:\mathrm{vertical} \\ $$$$\mathrm{separation}\:{h}\:\mathrm{of}\:\mathrm{two}\:\mathrm{consecutive}\:\mathrm{balls} \\ $$$$\mathrm{when}\:\mathrm{the}\:\mathrm{lower}\:\mathrm{one}\:\mathrm{has}\:\mathrm{dropped}\:{d} \\ $$$$\mathrm{meters}. \\ $$ Commented by Tinkutara…

A-car-A-is-travelling-with-a-speed-of-72-km-h-on-a-straight-horizontal-road-It-is-followed-by-another-car-B-which-is-moving-with-a-velocity-of-36-km-h-When-the-distance-between-them-is-25-km-the-ca

Question Number 15100 by Tinkutara last updated on 07/Jun/17 $$\mathrm{A}\:\mathrm{car}\:{A}\:\mathrm{is}\:\mathrm{travelling}\:\mathrm{with}\:\mathrm{a}\:\mathrm{speed}\:\mathrm{of}\:\mathrm{72} \\ $$$$\mathrm{km}/\mathrm{h}\:\mathrm{on}\:\mathrm{a}\:\mathrm{straight}\:\mathrm{horizontal}\:\mathrm{road}.\:\mathrm{It} \\ $$$$\mathrm{is}\:\mathrm{followed}\:\mathrm{by}\:\mathrm{another}\:\mathrm{car}\:{B}\:\mathrm{which}\:\mathrm{is} \\ $$$$\mathrm{moving}\:\mathrm{with}\:\mathrm{a}\:\mathrm{velocity}\:\mathrm{of}\:\mathrm{36}\:\mathrm{km}/\mathrm{h}. \\ $$$$\mathrm{When}\:\mathrm{the}\:\mathrm{distance}\:\mathrm{between}\:\mathrm{them}\:\mathrm{is}\:\mathrm{25} \\ $$$$\mathrm{km},\:\mathrm{the}\:\mathrm{car}\:{A}\:\mathrm{is}\:\mathrm{given}\:\mathrm{a}\:\mathrm{deceleration}\:\mathrm{of} \\ $$$$\mathrm{2}\:\mathrm{ms}^{−\mathrm{2}} .\:\mathrm{After}\:\mathrm{how}\:\mathrm{much}\:\mathrm{time}\:\mathrm{will}\:{B} \\ $$$$\mathrm{catch}\:\mathrm{up}\:\mathrm{with}\:{A}?…

Q-find-d-dx-x-

Question Number 80613 by M±th+et£s last updated on 04/Feb/20 $${Q}.{find}\:\:\:\frac{{d}}{{dx}}\left({x}!\right) \\ $$ Commented by Rio Michael last updated on 04/Feb/20 $$\:\mathrm{i}\:\mathrm{don}'\mathrm{t}\:\mathrm{think}\:\mathrm{this}\:\mathrm{exist},\:\mathrm{from}\:\mathrm{my}\:\mathrm{understanding} \\ $$$${x}!\:=\:{x}\left({x}−\mathrm{1}\right)!\:\mathrm{has}\:\mathrm{a}\:\mathrm{domain}\:\mathrm{of}\:\mathrm{D}\:=\:{x}\:\in\:\mathbb{N}^{\ast} \\ $$$$\mathrm{tbat}\:\mathrm{means}\:\mathrm{we}\:\mathrm{have}\:\mathrm{no}\:\mathrm{specific}\:\mathrm{interval}…

Gravitational-potential-of-a-ring-of-radius-R-and-mass-M-on-the-axis-at-a-distance-x-from-the-center-is-given-by-v-x-GM-R-2-x-2-Nm-kg-Using-the-above-expression-find-the-gravitationa

Question Number 15052 by Tinkutara last updated on 07/Jun/17 $$\mathrm{Gravitational}\:\mathrm{potential}\:\mathrm{of}\:\mathrm{a}\:\mathrm{ring}\:\mathrm{of} \\ $$$$\mathrm{radius}\:{R}\:\mathrm{and}\:\mathrm{mass}\:{M}\:\mathrm{on}\:\mathrm{the}\:\mathrm{axis}\:\mathrm{at}\:\mathrm{a} \\ $$$$\mathrm{distance}\:{x}\:\mathrm{from}\:\mathrm{the}\:\mathrm{center}\:\mathrm{is}\:\mathrm{given}\:\mathrm{by} \\ $$$${v}\left({x}\right)\:=\:−\:\frac{{GM}}{\:\sqrt{{R}^{\mathrm{2}} \:+\:{x}^{\mathrm{2}} }}\:\mathrm{Nm}/\mathrm{kg} \\ $$$$\mathrm{Using}\:\mathrm{the}\:\mathrm{above}\:\mathrm{expression}\:\mathrm{find}\:\mathrm{the} \\ $$$$\mathrm{gravitational}\:\mathrm{potential}\:\mathrm{of}\:\mathrm{the}\:\mathrm{disc}\:\mathrm{of} \\ $$$$\mathrm{mass}\:{M}\:\mathrm{and}\:\mathrm{radius}\:{R}\:\mathrm{on}\:\mathrm{the}\:\mathrm{axis}\:\mathrm{at}\:\mathrm{a} \\…

1-00-Mol-of-a-monoatomic-gas-initially-at-3-00-10-2-K-and-occupying-2-00-10-3-m-3-is-heated-to-3-25-10-2-K-and-the-final-volume-is-4-00-10-3-m-3-Assuming-ideal-behaviour-Calcula

Question Number 15019 by tawa tawa last updated on 06/Jun/17 $$\mathrm{1}.\mathrm{00}\:\mathrm{Mol}\:\mathrm{of}\:\mathrm{a}\:\mathrm{monoatomic}\:\mathrm{gas}\:\mathrm{initially}\:\mathrm{at}\:\mathrm{3}.\mathrm{00}\:×\:\mathrm{10}^{\mathrm{2}} \mathrm{K}\:\mathrm{and}\:\mathrm{occupying}\:\: \\ $$$$\mathrm{2}.\mathrm{00}\:×\:\mathrm{10}^{−\mathrm{3}\:} \mathrm{m}^{\mathrm{3}} \:\mathrm{is}\:\mathrm{heated}\:\mathrm{to}\:\mathrm{3}.\mathrm{25}\:×\:\mathrm{10}^{\mathrm{2}} \mathrm{K}\:\mathrm{and}\:\mathrm{the}\:\mathrm{final}\:\mathrm{volume}\:\mathrm{is}\:\mathrm{4}.\mathrm{00}\:×\:\mathrm{10}^{−\mathrm{3}} \mathrm{m}^{\mathrm{3}} .\: \\ $$$$\mathrm{Assuming}\:\mathrm{ideal}\:\mathrm{behaviour}\:,\:\mathrm{Calculate}\:\mathrm{the}\:\mathrm{entropy}\:\mathrm{change}\:\mathrm{for}\:\mathrm{the}\:\mathrm{system}. \\ $$ Terms of…