Physics for Scientists and Engineers with Modern, Revised Hybrid (with Enhanced WebAssign Printed Access Card for Physics, Multi-Term Courses)
9th Edition
ISBN: 9781305266292
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 45, Problem 7OQ
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The reason for the spiral shape.
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An alpha particle (m = 6.68 x 1027 kg, q = +2 e.c.) is fired through a velocity selector that is created by an electric field of 4.5 x 105 N/C and a magnetic field of 0.90 T. It then enters a second magnetic field of 1.5 T.
a) Explain how a velocity selector works and determine the speed which the alpha particle must have been moving at.
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Chapter 45 Solutions
Physics for Scientists and Engineers with Modern, Revised Hybrid (with Enhanced WebAssign Printed Access Card for Physics, Multi-Term Courses)
Ch. 45.1 - When a nucleus undergoes fission, the two daughter...Ch. 45.2 - Prob. 45.2QQCh. 45.3 - Prob. 45.3QQCh. 45.4 - Prob. 45.4QQCh. 45 - Prob. 1OQCh. 45 - Prob. 2OQCh. 45 - Prob. 3OQCh. 45 - Prob. 4OQCh. 45 - Prob. 5OQCh. 45 - Prob. 6OQ
Ch. 45 - Prob. 7OQCh. 45 - Prob. 8OQCh. 45 - Prob. 9OQCh. 45 - Prob. 1CQCh. 45 - Prob. 2CQCh. 45 - Prob. 3CQCh. 45 - Prob. 4CQCh. 45 - Prob. 5CQCh. 45 - Prob. 6CQCh. 45 - Prob. 7CQCh. 45 - Prob. 8CQCh. 45 - Prob. 1PCh. 45 - Prob. 2PCh. 45 - Prob. 3PCh. 45 - Prob. 4PCh. 45 - Prob. 5PCh. 45 - Prob. 6PCh. 45 - Prob. 7PCh. 45 - Prob. 8PCh. 45 - Prob. 9PCh. 45 - Prob. 10PCh. 45 - Prob. 11PCh. 45 - Prob. 12PCh. 45 - Prob. 13PCh. 45 - Prob. 14PCh. 45 - Prob. 15PCh. 45 - Prob. 16PCh. 45 - Prob. 18PCh. 45 - Prob. 19PCh. 45 - Prob. 20PCh. 45 - Prob. 21PCh. 45 - Prob. 22PCh. 45 - Prob. 23PCh. 45 - Prob. 24PCh. 45 - Prob. 25PCh. 45 - Prob. 26PCh. 45 - Prob. 27PCh. 45 - Prob. 28PCh. 45 - Prob. 29PCh. 45 - Prob. 30PCh. 45 - Prob. 31PCh. 45 - Prob. 32PCh. 45 - Prob. 33PCh. 45 - Prob. 34PCh. 45 - Prob. 35PCh. 45 - Prob. 36PCh. 45 - Prob. 37PCh. 45 - Prob. 41PCh. 45 - Prob. 42PCh. 45 - Prob. 43PCh. 45 - Prob. 44PCh. 45 - Prob. 45PCh. 45 - Prob. 46APCh. 45 - Prob. 47APCh. 45 - Prob. 48APCh. 45 - Prob. 49APCh. 45 - Prob. 51APCh. 45 - Prob. 52APCh. 45 - Prob. 53APCh. 45 - Prob. 54APCh. 45 - Prob. 55APCh. 45 - Prob. 56APCh. 45 - Prob. 57APCh. 45 - Prob. 58APCh. 45 - Prob. 59APCh. 45 - Prob. 60APCh. 45 - Prob. 61APCh. 45 - Prob. 62APCh. 45 - Prob. 63APCh. 45 - Prob. 64APCh. 45 - Prob. 65APCh. 45 - Prob. 66APCh. 45 - Prob. 67APCh. 45 - Prob. 68APCh. 45 - Prob. 69APCh. 45 - Prob. 70APCh. 45 - Prob. 71APCh. 45 - Prob. 72APCh. 45 - Prob. 73AP
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- A mystery particle enters the region between the plates of a Thomson apparatus as shown in Figure 4.6. The deflection angle θ is measured to be 0.20 radians (downwards) for this particle when V = 2000 V, ℓ = 10.0 cm, and d = 2.00 cm. If a perpendicular magnetic field of magnitude 4.57 × 10−2 T is applied simultaneously with the electric field, the particle passes through the plates without deflection. (a) Find q/m for this particle. (b) Identify the particle. (c) Find the horizontal speed with which the particle entered the plates. (d) Must we use relativistic mechanics for this particle?arrow_forwardA common way to focus a beam of charged particles is to use an electric field and a magnetic field together. Based on the relative strength and orientation of the two fields, you can tune the Coulomb and Lorentz forces to direct the beam of particles. This technique is common in mass spectrometers and scanning electron microscopes. You want to focus a beam of positively charged particles moving in the -z direction. The particles have a mass of 3.30e-23 kg and you orient a 0.341 T magnetic field in the +x direction. What direction do the particles feel the Lorentz force from the magnetic field? The particle is moving with a velocity of 1.97e+05 and has a charge of 1.00e-16 C. What is the magnitude of the Lorentz force on the particle S in Newton? FLorentz %D If you want the Lorentz force and the Coulomb force to exactly cancel each other, what magnitude of electric field should you apply in N E = What direction should you orient the electric field so that the Coulomb force and the…arrow_forwardThe operator of a mass spectrometer produces a beam of doubly ionized (2+) ions. They first are accelerated by a potential difference of 34 V. Then, as the ions pass through a magnetic field of 0.050 T, the radius of their path is 53 mm. a) Determine the charge to mass ratio of this ion. b) Using your periodic table determine the most likely element this ion would be. Remember to note the name of the element and its mass number (e.g. carbon-12) (Note that the average NUCLEON (proton or neutron) has a mass of 1.67 x 10-27 kg.)arrow_forward
- In a particular decay process, two charged particles, labeled "A" and "B" were released, which enter into a region of magnetic field with different speeds as shown. The magnetic field is uniform pointing into the page. One of the particles curves to the left, while the other curved to the right. What is the nature of the charged on the particle? Hint : Use the right hand rule X X X X X X X X X X X X X V A VBX X X X X X X X A B O A = positively charged ; B = negatively charged Both are positively charged since the direction of curving ONLY depends on the speed Both are negatively charged since the direction of curving ONLY depends on the speed B = positively charged ; A = negatively charged X.arrow_forwardA hypothetical charge of 31 pC with a mass of 77 fg has a speed of 48 km/s and is ejected southward entering a uniform magnetic field of unknown magnitude and direction. If the path traced is clockwise, K A. Find the magnitude and direction of the magnetic field that will cause the charge to follow a semicircular path (given the diameter of 18 m). B. Find the time required for the charge to complete a semi-circular path from point K to point L. C. Find the magnitude and the direction of the magnetic force at point L.arrow_forward4. A 150-V battery is connected across two parallel metal plates of area 28.5 cm? and separation 8.20 mm. A beam of alpha particles (charge +2e, mass 6.64 x 1027 kg) is accelerated from rest through a potential difference of 1.75 kV and enters the region between the plates perpendicular to the electric field. What magnitude and direction of magnetic field are needed so that the alpha particles emerge undeflected from between the plates?arrow_forward
- Magnetic resonance imaging (MRI) is a powerful method that, unlike X-ray imaging, allows sharp images of soft tissue to be taken without exposing the patient to potentially dangerous radiation. The starting point for MRI is nuclear magnetic resonance (NMR), a technique that depends on whether the protons in the atomic nucleus have a magnetic field. The origin of the proton's magnetic field is its spin. In a classical analogy, the proton has a magnetic moment μ⃗ , like a loop of wire; thus, it will have a torque when subjected to an external magnetic field B⃗ 0. The magnitude of μ⃗ is somewhere around 1.4×10−26 J/T. The proton can be thought of as being in one of two states: either oriented parallel or antiparallel to the applied magnetic field, with work being done to invert the proton from the low-energy to the high-energy state. If a nucleus has an even number of protons and neutrons, they will pair up in such a way that half of the protons will have spins in one orientation, and…arrow_forward389/5000 Magnetic with a proton intensity ? = 2 T with a charge ? = 1.6 × 10 ^ -19 C and a mass ? = 1.67 × 10 ^ -27 kgperpendicular to the field, it enters the magnetic field from point A and after drawing a half circle from point Bgoes out of the magnetic field. a) The direction of the magnetic field in which the proton takes effect b) The protonCalculate the radius of the circle it draws and c) the length of time the proton stays in the field.arrow_forwardOResources A Give Up? 3.6% A beam of protons is directed in a straight line along the positive z-direction through a region of space in which there are crossed electric and magnetic fields. If the electric field magnitude is E = 430 V/m in the negative y-direction and the protons move at a constant speed of v = 8.7 x 10° m/s, what must the direction and magnitude of the magnetic field be in order for the beam of protons to continue undeflected along its straight-line trajectory? Select the direction of the magnetic field B. O positive y-direction O positive x-direction negative z-direction O negative y-direction O positive z-direction O negative x-direction magnitude of the magnetic field B: about us careers privacy policy terms of use contact us help 87°F Rain coming PrtScn F8 Home End F10 PgUp F11 PgDn F12 F3 F4 ES F6 F7 F9 8. %3D T. Y U * CO %24 14arrow_forward
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