S2 Sample B and E 2r Detector or film FIGURE 20–41 Bainbridge-type mass spectrometer. The magnetic fields B and B' point out of the paper (indicated by the dots).
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Two ions have the same mass, but one is singly ionized and
the other is doubly ionized. How will their positions on the
film of a mass spectrometer (Fig. 20–41) differ? Explain.
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- -6. (i) State the condition under which a char particle moving with velocity v goes undeflected in a magnetic field B. ii) An electron, after being accelerated through a potential difference of 104 V, enters a uniform magnetic field of 0-04 T, perpendicular to its direction of motion. Calculate the radius of curvature of its trajectory.1) If two protons are traveling parallel to each other in the same direction and at the same speed, is the magnetic force between them (a) attractive or (b) repulsive? ANSWER: (EXPLAIN YOUR OPTION IN ONE SENTENCE ONLY)The magnetic moment of the Earth la approximately .00 - 10 A- m Imagine that the planetary emagnetic field were caused by the complete magnetication of a tuge iron deposit with density 7o0 kg/m and approximately 50 x 10 iron atom/m MOw many wnpaired electrons, nach with a magnetic moment of 9710-34 A m wukd participte (DAL bo unpaired electruns per iron atom, how many ilograms of ran would be present in the deposit Need Help? esier
- (a) A velocity selector consists of electric and magnetic fields described by the expressions E = EK and B = B ĵ, with B = 18.0 mT. Find the value of E (in kV/m) such that a 840 eV electron moving in the negative x-direction is undeflected. 309 kv/m (b) What If? For the value of E found in part (a), what would the kinetic energy of a proton have to be (in MeV) for it to move undeflected in the negative x-direction? MeV(c) Two ions X3- and Y+ moving at the same speed enter a uniform magnetic field perpendicularly. If the radius produced by X3- and Y+ is in the ratio of 6: 5, what is the ratio of the (momentum of X³- ion) / (momentum of Y* ion)?