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Question-18614

Question Number 18614 by Arnab Maiti last updated on 25/Jul/17 Commented by Arnab Maiti last updated on 25/Jul/17 $$\mathrm{Each}\:\mathrm{resistance}\:\mathrm{is}\:\:\mathrm{of}\:\mathrm{R}\:\Omega \\ $$$$\mathrm{What}\:\mathrm{will}\:\mathrm{be}\:\mathrm{the}\:\mathrm{equivalent} \\ $$$$\mathrm{resistance}\:\mathrm{between} \\ $$$$\left(\mathrm{1}\right)\:\mathrm{A}\:\mathrm{and}\:\mathrm{B}…

A-block-of-mass-M-is-pulled-vertically-upward-through-a-rope-of-mass-m-by-applying-force-F-on-one-end-of-the-rope-What-force-does-the-rope-exert-on-the-block-

Question Number 18607 by Tinkutara last updated on 25/Jul/17 $$\mathrm{A}\:\mathrm{block}\:\mathrm{of}\:\mathrm{mass}\:{M}\:\mathrm{is}\:\mathrm{pulled}\:\mathrm{vertically} \\ $$$$\mathrm{upward}\:\mathrm{through}\:\mathrm{a}\:\mathrm{rope}\:\mathrm{of}\:\mathrm{mass}\:{m}\:\mathrm{by} \\ $$$$\mathrm{applying}\:\mathrm{force}\:{F}\:\mathrm{on}-\mathrm{one}\:\mathrm{end}\:\mathrm{of}\:\mathrm{the}\:\mathrm{rope}. \\ $$$$\mathrm{What}\:\mathrm{force}\:\mathrm{does}\:\mathrm{the}\:\mathrm{rope}\:\mathrm{exert}\:\mathrm{on}\:\mathrm{the} \\ $$$$\mathrm{block}? \\ $$ Commented by Tinkutara last updated…

The-work-function-of-a-metal-is-4-eV-If-light-of-frequency-2-3-10-15-Hz-is-incident-on-metal-surface-then-1-No-photoelectron-will-be-ejected-2-2-photoelectron-of-zero-kinetic-energy-are-ej

Question Number 18603 by Tinkutara last updated on 25/Jul/17 $$\mathrm{The}\:\mathrm{work}\:\mathrm{function}\:\mathrm{of}\:\mathrm{a}\:\mathrm{metal}\:\mathrm{is}\:\mathrm{4}\:\mathrm{eV}.\:\mathrm{If} \\ $$$$\mathrm{light}\:\mathrm{of}\:\mathrm{frequency}\:\mathrm{2}.\mathrm{3}\:×\:\mathrm{10}^{\mathrm{15}} \:\mathrm{Hz}\:\mathrm{is} \\ $$$$\mathrm{incident}\:\mathrm{on}\:\mathrm{metal}\:\mathrm{surface},\:\mathrm{then}, \\ $$$$\left(\mathrm{1}\right)\:\mathrm{No}\:\mathrm{photoelectron}\:\mathrm{will}\:\mathrm{be}\:\mathrm{ejected} \\ $$$$\left(\mathrm{2}\right)\:\mathrm{2}\:\mathrm{photoelectron}\:\mathrm{of}\:\mathrm{zero}\:\mathrm{kinetic} \\ $$$$\mathrm{energy}\:\mathrm{are}\:\mathrm{ejected} \\ $$$$\left(\mathrm{3}\right)\:\mathrm{1}\:\mathrm{photoelectron}\:\mathrm{of}\:\mathrm{zero}\:\mathrm{kinetic} \\ $$$$\mathrm{energy}\:\mathrm{is}\:\mathrm{ejected}…

find-the-general-solution-of-the-equation-2sin-3-sin-2-

Question Number 84134 by Rio Michael last updated on 09/Mar/20 $$\mathrm{find}\:\mathrm{the}\:\mathrm{general}\:\mathrm{solution}\:\mathrm{of}\:\mathrm{the}\:\mathrm{equation} \\ $$$$\:\mathrm{2sin}\:\mathrm{3}\theta\:=\:\mathrm{sin}\:\mathrm{2}\theta \\ $$ Answered by mr W last updated on 09/Mar/20 $$\mathrm{2}\:\mathrm{sin}\:\theta\left(\mathrm{3}−\mathrm{4}\:\mathrm{sin}^{\mathrm{2}} \:\theta\right)=\mathrm{2}\:\mathrm{sin}\:\theta\:\mathrm{cos}\:\theta…

In-moving-a-body-of-mass-m-up-and-down-a-rough-incline-plane-of-inclination-work-done-is-S-is-length-of-the-planck-and-is-coefficient-of-friction-

Question Number 18581 by Tinkutara last updated on 25/Jul/17 $$\mathrm{In}\:\mathrm{moving}\:\mathrm{a}\:\mathrm{body}\:\mathrm{of}\:\mathrm{mass}\:{m}\:\mathrm{up}\:\mathrm{and} \\ $$$$\mathrm{down}\:\mathrm{a}\:\mathrm{rough}\:\mathrm{incline}\:\mathrm{plane}\:\mathrm{of}\:\mathrm{inclination} \\ $$$$\theta,\:\mathrm{work}\:\mathrm{done}\:\mathrm{is}\:\left(\mathrm{S}\:\mathrm{is}\:\mathrm{length}\:\mathrm{of}\:\mathrm{the}\:\mathrm{planck},\right. \\ $$$$\left.\mathrm{and}\:\mu\:\mathrm{is}\:\mathrm{coefficient}\:\mathrm{of}\:\mathrm{friction}\right). \\ $$ Answered by ajfour last updated on 25/Jul/17…

given-that-g-x-x-2-if-0-x-lt-2-x-2-if-2-x-lt-4-is-periodic-of-period-4-sketch-the-curve-for-g-x-in-the-interval-0-x-lt-8-evaluate-g-6-

Question Number 84121 by Rio Michael last updated on 09/Mar/20 $$\mathrm{given}\:\:\mathrm{that} \\ $$$$\:\mathrm{g}\left({x}\right)\:=\:\begin{cases}{{x}\:+\:\mathrm{2}\:,\:\mathrm{if}\:\:\mathrm{0}\:\leqslant\:{x}\:<\:\mathrm{2}}\\{{x}^{\mathrm{2}} \:,\:\mathrm{if}\:\:\mathrm{2}\:\leqslant\:{x}\:<\:\mathrm{4}}\end{cases} \\ $$$$\mathrm{is}\:\mathrm{periodic}\:\mathrm{of}\:\mathrm{period}\:\mathrm{4}.\: \\ $$$$\mathrm{sketch}\:\mathrm{the}\:\mathrm{curve}\:\mathrm{for}\:\mathrm{g}\left({x}\right)\:\mathrm{in}\:\mathrm{the}\:\mathrm{interval} \\ $$$$\:\:\mathrm{0}\leqslant\:{x}\:<\:\mathrm{8} \\ $$$$\mathrm{evaluate}\:\:\mathrm{g}\left(−\mathrm{6}\right). \\ $$ Commented…

The-energy-required-to-dislodge-electron-from-excited-isolated-H-atom-IE-1-13-6-eV-is-1-13-6-eV-2-gt-13-6-eV-3-lt-13-6-eV-and-gt-3-4-eV-4-3-4-eV-

Question Number 18568 by Tinkutara last updated on 24/Jul/17 $$\mathrm{The}\:\mathrm{energy}\:\mathrm{required}\:\mathrm{to}\:\mathrm{dislodge}\:\mathrm{electron} \\ $$$$\mathrm{from}\:\mathrm{excited}\:\mathrm{isolated}\:\mathrm{H}-\mathrm{atom},\:\mathrm{IE}_{\mathrm{1}} \:= \\ $$$$\mathrm{13}.\mathrm{6}\:\mathrm{eV}\:\mathrm{is} \\ $$$$\left(\mathrm{1}\right)\:=\:\mathrm{13}.\mathrm{6}\:\mathrm{eV} \\ $$$$\left(\mathrm{2}\right)\:>\:\mathrm{13}.\mathrm{6}\:\mathrm{eV} \\ $$$$\left(\mathrm{3}\right)\:<\:\mathrm{13}.\mathrm{6}\:\mathrm{eV}\:\mathrm{and}\:>\:\mathrm{3}.\mathrm{4}\:\mathrm{eV} \\ $$$$\left(\mathrm{4}\right)\:\leqslant\:\mathrm{3}.\mathrm{4}\:\mathrm{eV} \\ $$…

The-acceleration-of-an-object-is-given-by-a-t-cos-npi-and-its-velocity-at-time-t-0-is-1-2pi-Find-both-the-net-and-the-total-distance-traveled-in-the-first-1-5-seconds-

Question Number 18561 by tawa tawa last updated on 24/Jul/17 $$\mathrm{The}\:\mathrm{acceleration}\:\mathrm{of}\:\mathrm{an}\:\mathrm{object}\:\mathrm{is}\:\mathrm{given}\:\mathrm{by}\:\mathrm{a}\left(\mathrm{t}\right)\:=\:\mathrm{cos}\left(\mathrm{n}\pi\right),\:\mathrm{and}\:\mathrm{its}\:\mathrm{velocity} \\ $$$$\mathrm{at}\:\mathrm{time}\:\mathrm{t}\:=\:\mathrm{0}\:\mathrm{is}\:\:\:\frac{\mathrm{1}}{\mathrm{2}\pi}.\:\mathrm{Find}\:\mathrm{both}\:\mathrm{the}\:\mathrm{net}\:\mathrm{and}\:\mathrm{the}\:\mathrm{total}\:\mathrm{distance}\:\mathrm{traveled}\:\mathrm{in}\:\mathrm{the} \\ $$$$\mathrm{first}\:\:\mathrm{1}.\mathrm{5}\:\mathrm{seconds}. \\ $$ Commented by tawa tawa last updated on 24/Jul/17…

A-particle-of-mass-1-gram-executes-an-oscillatory-motion-on-the-concave-surface-of-a-spherical-dish-of-radius-2-m-placed-on-a-horizontal-plane-If-the-motion-of-the-particle-starts-from-a-point-on-th

Question Number 18549 by Tinkutara last updated on 24/Jul/17 $$\mathrm{A}\:\mathrm{particle}\:\mathrm{of}\:\mathrm{mass}\:\mathrm{1}\:\mathrm{gram}\:\mathrm{executes}\:\mathrm{an} \\ $$$$\mathrm{oscillatory}\:\mathrm{motion}\:\mathrm{on}\:\mathrm{the}\:\mathrm{concave} \\ $$$$\mathrm{surface}\:\mathrm{of}\:\mathrm{a}\:\mathrm{spherical}\:\mathrm{dish}\:\mathrm{of}\:\mathrm{radius}\:\mathrm{2}\:\mathrm{m}, \\ $$$$\mathrm{placed}\:\mathrm{on}\:\mathrm{a}\:\mathrm{horizontal}\:\mathrm{plane}.\:\mathrm{If}\:\mathrm{the} \\ $$$$\mathrm{motion}\:\mathrm{of}\:\mathrm{the}\:\mathrm{particle}\:\mathrm{starts}\:\mathrm{from}\:\mathrm{a} \\ $$$$\mathrm{point}\:\mathrm{on}\:\mathrm{the}\:\mathrm{dish}\:\mathrm{at}\:\mathrm{the}\:\mathrm{height}\:\mathrm{of}\:\mathrm{1}\:\mathrm{cm} \\ $$$$\mathrm{from}\:\mathrm{the}\:\mathrm{horizontal}\:\mathrm{plane}\:\mathrm{and}\:\mathrm{the} \\ $$$$\mathrm{coefficient}\:\mathrm{of}\:\mathrm{friction}\:\mathrm{is}\:\mathrm{0}.\mathrm{01},\:\mathrm{how}\:\mathrm{much} \\…

In-an-atom-the-last-electron-is-present-in-f-orbital-and-for-its-outermost-shell-the-graph-of-2-has-6-maximas-What-is-the-sum-of-group-and-period-of-that-element-

Question Number 18530 by Tinkutara last updated on 23/Jul/17 $$\mathrm{In}\:\mathrm{an}\:\mathrm{atom}\:\mathrm{the}\:\mathrm{last}\:\mathrm{electron}\:\mathrm{is}\:\mathrm{present} \\ $$$$\mathrm{in}\:{f}-\mathrm{orbital}\:\mathrm{and}\:\mathrm{for}\:\mathrm{its}\:\mathrm{outermost}\:\mathrm{shell} \\ $$$$\mathrm{the}\:\mathrm{graph}\:\mathrm{of}\:\Psi^{\mathrm{2}} \:\mathrm{has}\:\mathrm{6}\:\mathrm{maximas}.\:\mathrm{What} \\ $$$$\mathrm{is}\:\mathrm{the}\:\mathrm{sum}\:\mathrm{of}\:\mathrm{group}\:\mathrm{and}\:\mathrm{period}\:\mathrm{of}\:\mathrm{that} \\ $$$$\mathrm{element}? \\ $$ Answered by Tinkutara last…