(9%) Problem 3: In a mass spectrometer, a specific velocity can be selected from a distribution...

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(9%) Problem 3: In a mass spectrometer, a specific velocity can be selected from a distribution by injecting charged particles between a set of plates with a constant electric field between them and a magnetic field across them (perpendicular to the direction of particle travel). If the fields are tuned exactly right, only particles of a specific velocity will pass through this region undeflected. Consider such a velocity selector in a mass spectrometer with a 0.11 T magnetic field. & 50% Part (a) What electric field strength, in volts per meter, is needed to select a speed of 4.1 x 10° m/s? Grade Summary E= Deductions Potential 100% sin() cos() 89 Submissions 7 4 5 6 cotan() tan() X ( acos() E sinh() asin() Attempts remaining: (0% per attempt) detailed view atan() acotan() 1 2 3 cosh() tanh() cotanh() + D NO KXKAK Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: % deduction per feedback. 50% Part (b) What is the voltage, in kilovolts, between the plates if they are separated by 0.85 cm? Degrees Radians . . 0 MONACE 2 (9%) Problem 3: In a mass spectrometer, a specific velocity can be selected from a distribution by injecting charged particles between a set of plates with a constant electric field between them and a magnetic field across them (perpendicular to the direction of particle travel). If the fields are tuned exactly right, only particles of a specific velocity will pass through this region undeflected. Consider such a velocity selector in a mass spectrometer with a 0.11 T magnetic field. & 50% Part (a) What electric field strength, in volts per meter, is needed to select a speed of 4.1 x 10° m/s? Grade Summary E= Deductions Potential 100% sin() cos() 89 Submissions 7 4 5 6 cotan() tan() X ( acos() E sinh() asin() Attempts remaining: (0% per attempt) detailed view atan() acotan() 1 2 3 cosh() tanh() cotanh() + D NO KXKAK Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: % deduction per feedback. 50% Part (b) What is the voltage, in kilovolts, between the plates if they are separated by 0.85 cm? Degrees Radians . . 0 MONACE 2

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