https://peda.net/id/60762314123 2022-08-02T10:47:33+03:00 https://peda.net/:static/543/peda.net.logo.bg.svg <div class="license">Tämän sivun lisenssi <a rel="license noopener" href="https://peda.net/id/FGdQ44" target="_blank">e-Oppi -lisenssi</a></div> https://peda.net/id/60768cab123 2020-09-14T08:18:02+03:00 <p>401: a) 1: 50 protonia, 67 neutronia ja 50 elektronia 2: 30 protonia, 35 neutronia, 28 elektronia</p> <p>b) 1: [[$^{194}_{\,\,78}\text{Pt}^{+4}$]] 2: [[$^{7}_{3}\text{Li}$]]</p> <p>402: O-16: 0,1370 u; 127,6 MeV; 7,976 MeV<br/> Pb-208: 1,757 u; 1636 MeV; 7,868 MeV</p> <p>403: 4,2 Mt/s<br/> 404: a) 1879 MeV  b) 2025 MeV c) 145,7 MeV</p> <p>406: a) [[$^{230}_{\,\,90}\text{Th}\rightarrow {^{226}_{\,\,88}\text{Ra}}+\alpha$]]</p> <p>b) [[$^{35}_{16}\text{S}\rightarrow{^{35}_{17}\text{Cl}}+\text{e}+\overline{\nu}$]]</p> <p>c) [[$^{13}_{\,\,7}\text{N}\rightarrow{^{13}_{\,\,6}\text{C}}+\text{e}^++\nu$]]</p> <p>407: Po-210: [[$^{210}_{\,\,84}\text{Po}\rightarrow{^{206}_{\,\,82}\text{Pb}}+\alpha$]]</p> <p>Pu-239: [[$^{239}_{\,\,94}\text{Pu}\rightarrow{^{235}_{\,\,92}\text{U}}+\alpha$]]</p> <p>Mg-27: [[$^{27}_{12}\text{Mg}\rightarrow{^{27}_{13}\text{Al}}+\text{e}+\overline{\nu}$]]</p> <p>Zr-88: [[$^{88}_{40}\text{Zr}+\text{e}\rightarrow{^{88}_{39}\text{Y}}+\nu$]]</p> <p>408: a) [[$_{\,\,53}^{131}\text{I}\rightarrow{_{\,\,54}^{131}\text{Xe}}+\text{e}+\overline{\nu}$]] b) 0,9706 MeV</p> <p>409: a) 5,643 MeV b) 93,93 MeV</p> <p>410: a) [[$^{60}_{27}\text{Co}\rightarrow ^{60}_{28}\text{Ni}+\text{e}+\overline{\nu}$]] b) 2,828 MeV c) 1,057 pm ja 0,9305 pm</p> <p>411: a) 188,9 MeV b) 76,26 TJ, samaa suuruusluokkaa<br/> 412: 37 h<br/> 413: a) 87 ng b) 65 %<br/> 414: [[$4,3\cdot 10^9\text{ a}$]]<br/> 415: 160 s<br/> 416: 190 miljoonaa</p> 2022-08-02T10:47:33+03:00 https://peda.net/id/6077089e123 2020-01-06T01:00:52+02:00 <p>453: 1,015 MeV ja 1,779 MeV<br/> 454: 10,202 keV; 15,112 MeV<br/> 455: 6,94 eV</p> <p>456: a) [[$^{137}_{\,\,55}\text{Cs}\rightarrow {^{137}_{\,\,56}\text{Ba}}+e+\overline{\nu}$]] b) 624,2 keV</p> <p>457: [[$ 1,1\cdot 10^{-3} \ \mathrm{1/s} $]]​; 10 min<br/> <br/> 458: a) [[$^{209}_{\,\,83}\text{Bi}+\text{n}\rightarrow {^{210}_{\,\,83}\text{Bi}}$]]</p> <p>[[$^{210}_{\,\,83}\text{Bi}\rightarrow {^ {210}_{\,\,84}\text{Po}}+e+\overline{\nu}$]]</p> <p>[[$^{210}_{\,\,84}\text{Po}\rightarrow {^{206}_{\,\,82}\text{Pb}}+{^{4}_{2}\text{He}}$]]</p> <p>c) [[$ 1,7\cdot 10^8 $]]​ hajoamista sekunnissa<br/> 459: a) 1,2 kg  b) Vuonna 2120<br/> 460: b) 5,5924 MeV c) 35 kg<br/> 461: b) 12 kBq; 95 ng c) Histogrammi noudattaa silmämääräisesti normaalijakaumaa.<br/> 462: ​[[$ 2,6\cdot 10^9 a $]]​<br/> 463: [[$ 5,94\cdot 10^9 a $]]<br/> 464: b) [[$\propto \dfrac{1}{r^2}$]]</p> 2022-08-02T10:47:33+03:00