To determine The speed at which Li + ions move through the magnetic field. Explanation Given that the magnetic field used in the mass spectrometer is 0.50 T , the radius of the orbit is 8.4 cm , the mass of the Li + atom is 6.015 u and the ion charge is + e . Write the expression for the radius of the orbit of the Li + ion. r = m v q B (I) Here, r is the radius of the orbit, m is the mass of the Li + ion, v is the speed of the Li + ions which move through the magnetic field, B is the strength of the magnetic field. Solve the above equation for v . v = q B r m (II) Conclusion: Substitute 1.6 × 10 − 19 C for q , 0.50 T for B , 8.4 cm for r and 6

5th Edition

ISBN: 9781260487008

Author: GIAMBATTISTA, Alan

Publisher: MCGRAW-HILL HIGHER EDUCATION

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