EBK PHYSICS OF EVERYDAY PHENOMENA
8th Edition
ISBN: 8220106637050
Author: Griffith
Publisher: YUZU
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Chapter 18, Problem 13CQ
To determine
How it can be demonstrated that cathode rays are negatively charged particles.
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3. If a proton and an electron are released when they are 2.0 * 10^10 m apart (a typical atomicdistance), find the initial acceleration of each particle.
please explain me asap please
You pick up a block of wood with 3 x 10^27 protons, 3 x 10^27 neutrons and 3.1 x 10^27 electrons. a) What is the mass of the block in kg?(Round your answer to the nearest tenth) b) How much does the block weigh in pounds (lbs)? c) What is the charge (C) on the block? d) Based on its weight, will you need 1 or two hands to pick up this block?
Part 1
Find the speed an alpha particle requires to come within 4 x 10-14 m of a gold nucleus. Coulomb's constant is
8.99 x 109 Nm2/C2, the charge on an electron is 1.6 × 10-19 C, and the mass of the alpha particle is 6.64 x
10-27 kg. Answer in units of m/s.
Part 2
Find the energy of the alpha particle. Answer in units of MeV.
Chapter 18 Solutions
EBK PHYSICS OF EVERYDAY PHENOMENA
Ch. 18 - Prob. 1CQCh. 18 - Prob. 2CQCh. 18 - Prob. 3CQCh. 18 - Prob. 4CQCh. 18 - Prob. 5CQCh. 18 - Prob. 6CQCh. 18 - Prob. 7CQCh. 18 - Prob. 8CQCh. 18 - Prob. 9CQCh. 18 - Prob. 10CQ
Ch. 18 - Prob. 11CQCh. 18 - Prob. 12CQCh. 18 - Prob. 13CQCh. 18 - Prob. 14CQCh. 18 - Prob. 15CQCh. 18 - Prob. 16CQCh. 18 - Prob. 17CQCh. 18 - Prob. 18CQCh. 18 - Prob. 19CQCh. 18 - Prob. 20CQCh. 18 - Prob. 21CQCh. 18 - Prob. 22CQCh. 18 - Prob. 23CQCh. 18 - Prob. 24CQCh. 18 - Prob. 25CQCh. 18 - Prob. 26CQCh. 18 - Prob. 27CQCh. 18 - Prob. 28CQCh. 18 - Prob. 29CQCh. 18 - Prob. 30CQCh. 18 - Prob. 31CQCh. 18 - Prob. 32CQCh. 18 - Prob. 33CQCh. 18 - Prob. 34CQCh. 18 - Prob. 35CQCh. 18 - Prob. 1ECh. 18 - Prob. 2ECh. 18 - Prob. 3ECh. 18 - Prob. 4ECh. 18 - Prob. 5ECh. 18 - Prob. 6ECh. 18 - Prob. 7ECh. 18 - Prob. 8ECh. 18 - Prob. 9ECh. 18 - Prob. 10ECh. 18 - Prob. 11ECh. 18 - Prob. 12ECh. 18 - Prob. 1SPCh. 18 - Prob. 2SPCh. 18 - Prob. 3SPCh. 18 - Prob. 4SP
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- Cosmic 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_forwardH.W-A CRT has an effective deflection length of 2 Cm and distance of 1 mm. The acceleration voltage is 2 KV. If the electron mass and charge are 9.1 * 10-31 Kg and 1.6 * 10-19 C. Determine:- 1- The coordinate of the point at which the electron beam leaves the plates? 2- The maximum velocity. 3- The distance of which the screen be placed to produce deflection of 5 Cm on the screen.arrow_forwardIf we apply an electric field, what will happen to the electron-hole pair (s) that has (have) been created? Explainarrow_forward
- An alpha particle is whizzing by at a velocity determined by its KE of 5 Mev. a ) What is the velocity of the alpha particle? b) What is the magnetic field at the position of a nucleus 2nm away from the alpha particle at angle of 900 to the velocity of the alpha. Alpha particle has charge of 2e but mass of 4 protons.arrow_forwardTwo protons in the nucleus of a 238U atom are 6.0 fm (6.0x10-15m) apart. What is the potential energy (in joules) associated with the electric force that acts between these two particles? A.2.8x10-14 B. 3.8x1014 C. 5.0x10-9 D. 5.0x10-8arrow_forwardErnest Rutherford is famous for, among other things, shooting alpha particles at unsuspecting gold atoms. Consider an alpha particle endowed with 5.00 MeV of energy. Determine the closest distance this particle can approach the nucleus of a gold atom before deflectingarrow_forward
- Particle Electron Proton Neutron Relative Charge -1 +1 0 What is: Electric Charge (C) -1.60 x 10-19 +1.60 x 10-19 0 a) The mass defect? Relative Mass (u) 5.485779 x 10-4 1.007276 1.008665 1u = 1.6605 x 10-27 kg 1eV = 1.60 x 10-19 Joules The 'cheating' equivalence shortcut 1u- 931.5 MeV He is the most abundant isotope of helium. Its mass is 6.6447x 10-27kg. Mass (kg) b) The binding energy of the nucleus in joules? 9.109390 x 10-31 1.672623 x 10-27 1.674929 x 10-27arrow_forwardCoulomb constant, k = 8.987 x 10° N · m2 /C2. Vacuum permitivity, €n = 8.854 x 10 12 F/m. Magnitude of the charge of the electron, e = -1.60217662 x 10-19 C. Mass of the electron, me = 9.10938356 x 10 31 kg. Unless specified otherwise, each symbol carries their usual meaning. For example, uC means micro coulomb. +Y ↑ +x Coordinates of three charges in a 2D plane is given as follows: q1 = -42 µC at p1 = (-9,14), q2 = 21 µC at p2 = (-13,17) and q3 = -30 pC at p3 = (-9, -20). These coordinates are given in centimeters. c) Compute force on qi due to q2. x component of the force Give your answer to at least three significance digits. y component of the force Give your answer to at least three significance digits. d) Compute force on q due to q3- z component of the force Give your answer to at least three significance digits. y component of the force Give your answer to at least three significance digits. N e) Compute net force on qi due to q2 and q3. You can use the superposition principle…arrow_forwardHow would you solve for the kinetic energy (eV) of the alpha particle when it is traveling within the field?arrow_forward
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