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Vapour-pressure-in-a-closed-container-can-be-changed-by-1-Adding-water-vapours-from-outside-at-same-temperature-2-Adding-ice-at-same-temperature-3-Adding-water-at-same-temperature-4-Increasing

Question Number 21486 by Tinkutara last updated on 24/Sep/17 $$\mathrm{Vapour}\:\mathrm{pressure}\:\mathrm{in}\:\mathrm{a}\:\mathrm{closed}\:\mathrm{container} \\ $$$$\mathrm{can}\:\mathrm{be}\:\mathrm{changed}\:\mathrm{by} \\ $$$$\left(\mathrm{1}\right)\:\mathrm{Adding}\:\mathrm{water}\:\mathrm{vapours}\:\mathrm{from}\:\mathrm{outside} \\ $$$$\mathrm{at}\:\mathrm{same}\:\mathrm{temperature} \\ $$$$\left(\mathrm{2}\right)\:\mathrm{Adding}\:\mathrm{ice}\:\mathrm{at}\:\mathrm{same}\:\mathrm{temperature} \\ $$$$\left(\mathrm{3}\right)\:\mathrm{Adding}\:\mathrm{water}\:\mathrm{at}\:\mathrm{same}\:\mathrm{temperature} \\ $$$$\left(\mathrm{4}\right)\:\mathrm{Increasing}\:\mathrm{temperature} \\ $$ Terms…

Positive-deviation-from-ideal-behaviour-takes-place-because-of-a-molecular-interaction-between-atoms-and-PV-nRT-gt-1-b-molecular-interaction-between-atoms-and-PV-nRT-lt-1-c-finite-size-of-th

Question Number 21484 by Tinkutara last updated on 24/Sep/17 $$\mathrm{Positive}\:\mathrm{deviation}\:\mathrm{from}\:\mathrm{ideal}\:\mathrm{behaviour} \\ $$$$\mathrm{takes}\:\mathrm{place}\:\mathrm{because}\:\mathrm{of} \\ $$$$\left({a}\right)\:\mathrm{molecular}\:\mathrm{interaction}\:\mathrm{between} \\ $$$$\mathrm{atoms}\:\mathrm{and}\:\mathrm{PV}/{n}\mathrm{RT}\:>\:\mathrm{1} \\ $$$$\left({b}\right)\:\mathrm{molecular}\:\mathrm{interaction}\:\mathrm{between} \\ $$$$\mathrm{atoms}\:\mathrm{and}\:\mathrm{PV}/{n}\mathrm{RT}\:<\:\mathrm{1} \\ $$$$\left({c}\right)\:\mathrm{finite}\:\mathrm{size}\:\mathrm{of}\:\mathrm{the}\:\mathrm{atoms}\:\mathrm{and}\:\mathrm{PV}/{n}\mathrm{RT}\:>\:\mathrm{1} \\ $$$$\left({d}\right)\:\mathrm{finite}\:\mathrm{size}\:\mathrm{of}\:\mathrm{the}\:\mathrm{atoms}\:\mathrm{and}\:\mathrm{PV}/{n}\mathrm{RT}\:<\:\mathrm{1} \\…

Three-identical-blocks-each-having-a-mass-M-are-pushed-by-a-force-F-on-a-frictionless-table-What-is-the-net-force-on-the-block-A-

Question Number 21469 by Tinkutara last updated on 24/Sep/17 $$\mathrm{Three}\:\mathrm{identical}\:\mathrm{blocks},\:\mathrm{each}\:\mathrm{having}\:\mathrm{a} \\ $$$$\mathrm{mass}\:{M},\:\mathrm{are}\:\mathrm{pushed}\:\mathrm{by}\:\mathrm{a}\:\mathrm{force}\:{F}\:\mathrm{on}\:\mathrm{a} \\ $$$$\mathrm{frictionless}\:\mathrm{table}.\:\mathrm{What}\:\mathrm{is}\:\mathrm{the}\:\mathrm{net}\:\mathrm{force} \\ $$$$\mathrm{on}\:\mathrm{the}\:\mathrm{block}\:{A}? \\ $$ Commented by Tinkutara last updated on 24/Sep/17…

Question-152532

Question Number 152532 by mondli66 last updated on 29/Aug/21 Answered by amin96 last updated on 29/Aug/21 $$\begin{cases}{\mathrm{0}+{y}+\mathrm{3}{z}=−\mathrm{4}}\\{{x}+\mathrm{2}{y}+{z}=\mathrm{7}}\\{{x}−\mathrm{2}{y}+\mathrm{0}=\mathrm{1}}\end{cases}\:\:\:\Rightarrow\:\:\begin{pmatrix}{\mathrm{1}}&{\mathrm{2}}&{\mathrm{1}}&{\mathrm{7}}\\{\mathrm{1}}&{−\mathrm{2}}&{\mathrm{0}}&{\mathrm{1}}\\{\mathrm{0}}&{\mathrm{1}}&{\mathrm{3}}&{−\mathrm{4}}\end{pmatrix}^{\left(\mathrm{1}\right)−\left(\mathrm{1}\right)} = \\ $$$$=\begin{pmatrix}{\mathrm{1}}&{\mathrm{2}}&{\mathrm{1}}&{\mathrm{7}}\\{\mathrm{0}}&{\mathrm{4}}&{\mathrm{1}}&{\mathrm{6}}\\{\mathrm{0}}&{\mathrm{1}}&{\mathrm{3}}&{−\mathrm{4}}\end{pmatrix}^{\left(\mathrm{3}\right)×\mathrm{4}−\left(\mathrm{2}\right)} =\begin{pmatrix}{\mathrm{1}}&{\mathrm{2}}&{\mathrm{1}}&{\mathrm{7}}\\{\mathrm{0}}&{\mathrm{4}}&{\mathrm{1}}&{\mathrm{6}}\\{\mathrm{0}}&{\mathrm{0}}&{\mathrm{11}}&{−\mathrm{22}}\end{pmatrix} \\ $$$$\begin{cases}{{x}+\mathrm{2}{y}+{z}=\mathrm{7}}\\{\mathrm{4}{y}+{z}=\mathrm{6}}\\{\mathrm{11}{z}=−\mathrm{22}}\end{cases}\:\:\Rightarrow\:{z}=−\mathrm{2}\:\Rightarrow\:{y}=\mathrm{2}\:\:\Rightarrow{x}=\mathrm{5} \\ $$$${answer}\:\:\:\left(\mathrm{5};\:\mathrm{2}\:;\:−\mathrm{2}\right)…

Find-in-terms-of-using-the-equations-i-u-2-sin-2-2gd-cos-ii-t-u-cos-g-sin-iii-d-ut-sin-gt-2-sin-2-

Question Number 21441 by Tinkutara last updated on 23/Sep/17 $$\mathrm{Find}\:\alpha\:\mathrm{in}\:\mathrm{terms}\:\mathrm{of}\:\theta\:\mathrm{using}\:\mathrm{the}\:\mathrm{equations}: \\ $$$$\left({i}\right)\:{u}^{\mathrm{2}} \:\mathrm{sin}^{\mathrm{2}} \:\alpha\:=\:\mathrm{2}{gd}\:\mathrm{cos}\:\theta \\ $$$$\left({ii}\right)\:{t}\:=\:\frac{{u}\:\mathrm{cos}\:\alpha}{{g}\:\mathrm{sin}\:\theta} \\ $$$$\left({iii}\right)\:−{d}\:=\:{ut}\:\mathrm{sin}\:\alpha\:−\:\frac{{gt}^{\mathrm{2}} \:\mathrm{sin}\:\theta}{\mathrm{2}} \\ $$ Answered by $@ty@m last…

The-atomic-masses-of-He-and-Ne-are-4-and-20-a-m-u-respectively-The-value-of-the-de-Broglie-wavelength-of-He-gas-at-73-C-is-M-times-that-of-the-de-Broglie-wavelength-of-Ne-at-727-C-M-is

Question Number 21412 by Tinkutara last updated on 23/Sep/17 $$\mathrm{The}\:\mathrm{atomic}\:\mathrm{masses}\:\mathrm{of}\:'\mathrm{He}'\:\mathrm{and}\:'\mathrm{Ne}'\:\mathrm{are} \\ $$$$\mathrm{4}\:\mathrm{and}\:\mathrm{20}\:\mathrm{a}.\mathrm{m}.\mathrm{u}.,\:\mathrm{respectively}.\:\mathrm{The} \\ $$$$\mathrm{value}\:\mathrm{of}\:\mathrm{the}\:\mathrm{de}\:\mathrm{Broglie}\:\mathrm{wavelength}\:\mathrm{of} \\ $$$$'\mathrm{He}'\:\mathrm{gas}\:\mathrm{at}\:−\mathrm{73}°\mathrm{C}\:\mathrm{is}\:“\mathrm{M}''\:\mathrm{times}\:\mathrm{that}\:\mathrm{of} \\ $$$$\mathrm{the}\:\mathrm{de}\:\mathrm{Broglie}\:\mathrm{wavelength}\:\mathrm{of}\:'\mathrm{Ne}'\:\mathrm{at} \\ $$$$\mathrm{727}°\mathrm{C}\:'\mathrm{M}'\:\mathrm{is} \\ $$ Terms of Service…

The-critical-temperature-of-water-is-higher-than-that-of-O-2-because-the-H-2-O-molecule-has-a-fewer-electrons-than-O-2-b-two-covalent-bonds-c-V-shape-d-dipole-moment-

Question Number 21411 by Tinkutara last updated on 23/Sep/17 $$\mathrm{The}\:\mathrm{critical}\:\mathrm{temperature}\:\mathrm{of}\:\mathrm{water}\:\mathrm{is} \\ $$$$\mathrm{higher}\:\mathrm{than}\:\mathrm{that}\:\mathrm{of}\:\mathrm{O}_{\mathrm{2}} \:\mathrm{because}\:\mathrm{the} \\ $$$$\mathrm{H}_{\mathrm{2}} \mathrm{O}\:\mathrm{molecule}\:\mathrm{has} \\ $$$$\left({a}\right)\:\mathrm{fewer}\:\mathrm{electrons}\:\mathrm{than}\:\mathrm{O}_{\mathrm{2}} \\ $$$$\left({b}\right)\:\mathrm{two}\:\mathrm{covalent}\:\mathrm{bonds} \\ $$$$\left({c}\right)\:\mathrm{V}-\mathrm{shape} \\ $$$$\left({d}\right)\:\mathrm{dipole}\:\mathrm{moment}. \\…

A-block-of-mass-m-is-connected-with-another-block-of-mass-2m-by-a-light-spring-2m-is-connected-with-a-hanging-mass-3m-by-an-inextensible-light-string-At-the-time-of-release-of-block-3m-find-tension

Question Number 21388 by Tinkutara last updated on 22/Sep/17 $$\mathrm{A}\:\mathrm{block}\:\mathrm{of}\:\mathrm{mass}\:{m}\:\mathrm{is}\:\mathrm{connected}\:\mathrm{with} \\ $$$$\mathrm{another}\:\mathrm{block}\:\mathrm{of}\:\mathrm{mass}\:\mathrm{2}{m}\:\mathrm{by}\:\mathrm{a}\:\mathrm{light} \\ $$$$\mathrm{spring}.\:\mathrm{2}{m}\:\mathrm{is}\:\mathrm{connected}\:\mathrm{with}\:\mathrm{a}\:\mathrm{hanging} \\ $$$$\mathrm{mass}\:\mathrm{3}{m}\:\mathrm{by}\:\mathrm{an}\:\mathrm{inextensible}\:\mathrm{light}\:\mathrm{string}. \\ $$$$\mathrm{At}\:\mathrm{the}\:\mathrm{time}\:\mathrm{of}\:\mathrm{release}\:\mathrm{of}\:\mathrm{block}\:\mathrm{3}{m},\:\mathrm{find} \\ $$$$\mathrm{tension}\:\mathrm{in}\:\mathrm{the}\:\mathrm{string}\:\mathrm{and}\:\mathrm{acceleration} \\ $$$$\mathrm{of}\:\mathrm{all}\:\mathrm{the}\:\mathrm{masses}. \\ $$ Commented…