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Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Textbook Question
Chapter 30, Problem 44PQ
Can you use a mass spectrometer to measure the mass of a proton? Can you use a mass spectrometer to measure the mass of a neutron?
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Students have asked these similar questions
6. A mixture of two isotopes is injected into a mass spectrometer. One isotope follows a curved path of radius R1 = 48.9 cm; the other follows a curved path of radius R2 = 51.7 cm. Find the mass ratio, m1 m2 / ,assuming that the two isotopes have the same charge and speed.
A proton is moving under the combined influence of an electric field (E = 2569 V/m) and a magnetic field (B = 2.45 T), as shown in the figure. Assuming the proton is moving in the direction shown in the figure with speed 255 m/s at the instant it enters the crossed fields, what is the acceleration of the proton? (units are in m/s^2)
An ion that is singly charged, q=1.602x1019 C, and has
mass 2.3x1026 kg, enters the mass spectrometer shown
right. The electric field has a value of 2,900 V/m while the
magnetic field both inside and outside the velocity
selector points into the page and has value of 0.060 T a)
What will the value of the radius of the ion's obit be? B) In
detector
this layout would you be able to detect negatively charged
ions? Why or why not?
Chapter 30 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 30.2 - Prob. 30.1CECh. 30.3 - Prob. 30.2CECh. 30.4 - Prob. 30.3CECh. 30.8 - Cosmic rays are high-energy charged particles...Ch. 30.9 - The Earths Van Allen belts (Fig. 30.34) are a...Ch. 30.10 - Prob. 30.6CECh. 30.10 - Prob. 30.7CECh. 30.12 - Prob. 30.8CECh. 30 - A yoga teacher tells her students to imagine their...Ch. 30 - Prob. 2PQ
Ch. 30 - Prob. 3PQCh. 30 - Prob. 4PQCh. 30 - Prob. 5PQCh. 30 - Copy Figure P30.6 and sketch the magnetic field...Ch. 30 - Prob. 7PQCh. 30 - Prob. 9PQCh. 30 - Figure P30.10 shows a circular current-carrying...Ch. 30 - Figure P30.11 shows three configurations of wires...Ch. 30 - Review A proton is accelerated from rest through a...Ch. 30 - An electron moves in a circle of radius r at...Ch. 30 - One common type of cosmic ray is a proton...Ch. 30 - Prob. 15PQCh. 30 - Prob. 16PQCh. 30 - Prob. 17PQCh. 30 - A Two long, straight, parallel wires are shown in...Ch. 30 - Prob. 19PQCh. 30 - Two long, straight, parallel wires carry current...Ch. 30 - Prob. 21PQCh. 30 - Two long, straight wires carry the same current as...Ch. 30 - Prob. 23PQCh. 30 - A wire is bent in the form of a square loop with...Ch. 30 - Prob. 25PQCh. 30 - A Derive an expression for the magnetic field...Ch. 30 - Prob. 27PQCh. 30 - Prob. 28PQCh. 30 - Prob. 29PQCh. 30 - Prob. 30PQCh. 30 - Prob. 31PQCh. 30 - Prob. 32PQCh. 30 - Prob. 33PQCh. 30 - Prob. 34PQCh. 30 - Normally a refrigerator is not magnetized. If you...Ch. 30 - Prob. 36PQCh. 30 - Prob. 37PQCh. 30 - The magnetic field in a region is given by...Ch. 30 - Prob. 39PQCh. 30 - Prob. 40PQCh. 30 - Prob. 41PQCh. 30 - The velocity vector of a singly charged helium ion...Ch. 30 - Prob. 43PQCh. 30 - Can you use a mass spectrometer to measure the...Ch. 30 - In a laboratory experiment, a beam of electrons is...Ch. 30 - Prob. 46PQCh. 30 - Prob. 47PQCh. 30 - Prob. 48PQCh. 30 - A proton and a helium nucleus (consisting of two...Ch. 30 - Two ions are accelerated from rest in a mass...Ch. 30 - Prob. 51PQCh. 30 - Prob. 52PQCh. 30 - A rectangular silver strip is 2.50 cm wide and...Ch. 30 - For both sketches in Figure P30.56, there is a...Ch. 30 - A 1.40-m section of a straight wire oriented along...Ch. 30 - Professor Edward Ney was the founder of infrared...Ch. 30 - Prob. 59PQCh. 30 - A wire with a current of I = 8.00 A directed along...Ch. 30 - Prob. 61PQCh. 30 - The triangular loop of wire shown in Figure P30.62...Ch. 30 - Prob. 63PQCh. 30 - Consider the wires described in Problem 63. Find...Ch. 30 - Prob. 65PQCh. 30 - Prob. 66PQCh. 30 - A Three parallel current-carrying wires are shown...Ch. 30 - Prob. 68PQCh. 30 - Prob. 69PQCh. 30 - Prob. 70PQCh. 30 - Prob. 71PQCh. 30 - Prob. 72PQCh. 30 - A circular coil 15.0 cm in radius and composed of...Ch. 30 - Prob. 74PQCh. 30 - Prob. 75PQCh. 30 - Prob. 76PQCh. 30 - Prob. 77PQCh. 30 - Two long, straight, current-carrying wires run...Ch. 30 - Prob. 79PQCh. 30 - Prob. 80PQCh. 30 - Prob. 81PQCh. 30 - Prob. 82PQCh. 30 - Two infinitely long current-carrying wires run...Ch. 30 - Prob. 84PQCh. 30 - Prob. 85PQCh. 30 - Prob. 86PQCh. 30 - A charged particle with charge q and velocity...Ch. 30 - Prob. 88PQCh. 30 - Prob. 89PQCh. 30 - A mass spectrometer (Fig. 30.40, page 956)...Ch. 30 - Three long, current-carrying wires are parallel to...Ch. 30 - Prob. 92PQCh. 30 - A current-carrying conductor PQ of mass m and...Ch. 30 - A proton enters a region with a uniform electric...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- The magnetic field in a cyclotron is 1.25 T, and the maximum orbital radius of the circulating protons is 0.40 m. (a) What is the kinetic energy of the protons when they are ejected from the cyclotron? (b) What Is this energy in MeV? (c) Through what potential difference would a proton have to be accelerated to acquire this kinetic energy? (d) What is the period of tire voltage source used to accelerate the piotons? (e) Repeat tire calculations for alpha-particles.arrow_forwardCosmic rays are high-energy charged particles produced by astronomical objects. Many of the cosmic rays that make their way to the Earth are trapped by the Earths magnetic field and never reach the surface. These trapped cosmic rays are found in the Van Allen beltsdonut-shaped zones over the Earths equator (Fig. 30.34). These cosmic rays are mostly protons with energies of about 30 MeV. The inset in the figure shows a cosmic ray proton as it is about to enter the Earths magnetic field. The cosmic rays velocity is initially perpendicular to the field. Three students discuss what happens to the incoming cosmic ray. Decide which student or students are correct. Figure 30.34 The Van Allen belts are donut-shaped zones of trapped cosmic rays above the Earths surface. Inset: What happens to this cosmic ray as it enters the Earths magnetic field? Shannon: The velocity is perpendicular to the magnetic field, so the cosmic ray just passes through the field and hits the Earths atmosphere. Avi: What you are saying is that the magnetic field exerts no force on the cosmic ray. Actually, it exerts a huge force because the velocity is perpendicular to the magnetic field. The force will be into the page. Cameron: Avi is right. The cosmic ray proton is going to feel a huge magnetic force. Because it is positively charged, it will be pushed upward along the magnetic field lines. Shannon: I never said the force was zero. There is a force, but the force is perpendicular to the magnetic field lines. In this case, thats to the lefttoward the Earth. Avi: The force is perpendicular to the magnetic field, but it also has to be perpendicular to the velocity. Because B and v are both in the plane of the page, the force must be perpendicular to the page.arrow_forwardThe strengths of the fields in the velocity selector of a Bainbridge mass spectrometer are B = 0.500 T and E=1.2105 Van, and tire strength of the magnetic field that separates the ions is Bo=0.750 T. A stream of singly charged Li ions is found to bend in a circular arc of radius 2.32 cm. What is the mass of the Li ions?arrow_forward
- (a) An oxygen16 ion with a mass at 2.661026kg travels at 5.00106m/s perpendicular to a 1.20T magnetic field, which makes it move in a circular arc with a 0.231-m radius. What positive charge is on the ion? (b) What is the radio of this charge to the charge of an electron? (c) Discuss why the radio found in (b) should be an integer.arrow_forwardDetermine the velocity of a beam of electrons that goes un-deflected when moving perpendicular to an electric and a magnetic field. E and B are also perpendicular to each other and have magnitudes 7.7 x103 V/m and 7.5x10-3T, respectively.arrow_forwardIn a velocity selector in a mass spectrometer the magnetic field has a strength of 0.270 T and the electric field has a strength of 6.97 ✕ 105 V/m. (a)Calculate the speed (in m/s) of the charge particles in the velocity selector. m/s (b)Calculate the voltage difference (in kV) between the plates supplying the electric field if the plates are separated by 2.10 cm.kV (c)Protons are used in the velocity selector and they travel in a direction moving from left to right as viewed on the screen. After passing through the velocity selector, they enter a region that has the magnetic field given above and the field points into the screen. Calculate the radius (in mm) of the circular trajectory for the protons. (Mass and charge of the proton are: 1.673 x 10-27 kg and 1.602 x 10-19 C, respectively). mm (d)Determine the direction in which the protons will curve when they enter the region that has only the magnetic field. Curved down toward the bottom of the screen Curved out of…arrow_forward
- In a Bainbridge mass spectrometer (Figure 1), ions pass through the electromagnetic field of a velocity selector and are then deflected by a magnetic field. Knowing that E = 3.1 × 105 V/m and that B1 = B2 = 0.32 T, calculate the difference of the positions on the photographic plate for the ions of charge q = e of the nitrogen isotopes of masses 14 u and 15 u. Note that 1 u = 1.661 × 10-27 kg.arrow_forwardA velocity selector has a magnetic field of magnitude 0.20 T perpendicular to an electric field of magnitude 0.55 MV/m. (a) What must the speed of a particle be for it to pass through undeflected? m/s (b) What kinetic energy must protons have to pass through undeflected? kev (c) What kinetic energy must electrons have to pass through undeflected? eVarrow_forwardA Hall probe uses the Hall effect to measure the size of magnetic fields - it does this by measuring the potential difference across the electric field created by the displacement of charge. A specific Hall probe calibrated to read 0.95 μV when placed in a 2.15 T field is placed in a 1.5 T field. What is its output voltage in nV?arrow_forward
- MASS SPECTROMETER: URANIUM SEPARATION II. In the figure below, what would happen to the separation distance d if the magnetic field is increased? (The uranium isotopes are singly ionized and are exposed to the same strength of magnetic field.) Increases. Decreases. Remains the same. Cannot be determined. I need more information.arrow_forwardA pellet which holds a charge of 10 coulombs is moving upwards (+Y) and driven by an electric field in the same direction with a magnitude of 50 V/m. There is a magnetic field with a magnitude of 25 Tesla’s pointing downwards (-Y). How fast does the pellet need to be going for the magnetic force to cancel the electric force? Group of answer choices 0.5 m/s 2 m/s 4 m/s The forces will cancel out at any speed the pellet may be travelling In this case, the electric force cannot be canceled out by the magnetic forcearrow_forwardA charged particle enters the magnetic field of magnitude 0.35 T of a mass spectrometer at a speed of 1.79 x 10 m/s. If it travels in a circle with radius 10.7 cm, find the mass- to-charge ratio and identify the particle from the table. m (kg) 1.67 x 10-27 3.35 x 10-7 5.01 x 10-27 q (C) 1.60 x 10- 1.60 x 10- 1.60 x 10-9 3.20 x 10-9 Nucleus Hydrogen Deuterium Tritium m/q (kg/C) 1.04 x 10 2.09 x 10 3.13 x 10- Helium-3 5.01 x 10-27 1.57 x 10arrow_forward
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