1 A) 2.0 m B) 2.5 cm C) 2.0 cm D) 1.0 cm 2 A) an oscillator B) an antenna C) a capacitor D) a polarizer 3 A) oscillating fields B) radiation waves C) electromagnetic waves D) piezoelectric fields 4 A) oscillating rays B) electromotive force C) electromagnetic radiation D) terminal energy 5 A) an antenna and an amplifier B) a coil and capacitor circuit C) an antenna, a coil and capacitor circuit, and an amplifier D) an antenna, a capacitor circuit, and a resonator 6 A) pendulum B) parabolic path of a ball C) ship in orbit D) merry-go-round 7 A) It produces a beam of light when it enters a magnetic field. B) It bends or deforms when a voltage is applied across it. C) It amplifies sound waves. D) It emits infrared radiation. 8 - 2 -T uniform magnetic field balanced by a 7.0×103 -N/C electric field. What is the speed of the electrons?A) 5.7×10- 7 m/s B) 1.8×105 m/s C) 3.0×105 m/s D) 5.0×104 m/s 9 q = 3.20×10-19 C, B = 4.0×10-2 T, r = 0.220 m, and V = 45 V. Find the mass of one of these atoms.A) 8.7×10-21 kg B) 2.4×10-16 kg C) 2.8×10-25 kg D) 4.3×10-26 kg 10 A Thompson tube is configured like the one in the figure below, such that the electrons sent through the tube with a particular velocity hit the center of the screen. If the velocity of the electrons were decreased, where would they now hit the screen (from the electron's point of view)?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617934/nv.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (14.0K)</a>]]> A) to the left of center B) below the center C) above the center D) to the right of center 11 3 m/s as it passes through and is perpendicular to a 0.45-T uniform magnetic field. Find the radius of the circular path.A) 5.6×10-7 m B) 1.8×10-4 m C) 1.0×10-4 m/s D) 3.4×10-3 m 12 A Thompson tube is configured like the one in the figure below, such that the electrons sent through the tube hit the center of the screen. If the electric field were decreased, where would they now hit the screen (from the electron's point of view)?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617934/nv.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (14.0K)</a>]]> A) above the center B) to the right of center C) to the left of center D) below the center 13 -3 -T magnetic field perpendicular to a 4.7×102 -V/m electric field. The atoms then move into a magnetic field of 0.31 T and follow a circular path of radius 0.175 m. What is the mass of each of these atoms?A) 4.3×10-16 kg B) 8.7×10-21 kg C) 2.4×10-16 kg D) 4.3×10-26 kg 14 3 -N/C electric field. What is the speed of the moving protons?A) 9.0×103 m/s B) 1.0×104 m/s C) 1.0×10-4 m/s D) 9.0×10- 3 m/s 15 3 m/s as it passes through and is perpendicular to a 0.60-T uniform magnetic field. Find the radius of the circular path.A) 3.4×10-3 m B) 1.8×10-4 m C) 1.0×10-3 m D) 1.4×10-4 m 16 A) chemical properties B) numbers of electrons C) numbers of protons D) masses 17 2 -N/C electric field. What is the speed of the moving protons?A) 8.4×102 m/s B) 9.0×10-3 m/s C) 1.2×102 m/s D) 9.0×103 m/s 18 If Thomson's experiment depicted in the figure below were done with a proton, how would the magnitude of the q/m ratio obtained compare with that for an electron?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617934/nv.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (14.0K)</a>]]> A) It would be less. B) It would be the same. C) It would be more. D) It would depend on the velocity of the proton. 19 A) multiplying the velocity of the electron by the strength of the magnetic field B) multiplying the strength of the electric field by the charge on the electron C) weighing individual electrons on a balance inside a vacuum D) finding the charge-to-mass ratio and calculating the mass 20 3 -N/C electric field. What is the speed of the moving protons?A) 7.5×103 m/s B) 5.1×103 m/s C) 2.0×10-5 m/s D) 3.8×103 m/s 21 2 -V/m electric field. What is the speed of the atoms as they pass through the crossed fields?A) 4.7×102 m/s B) 5.1×104 m/s C) 8.0×104 m/s D) 2.0×104 m/s 22 A Thompson tube is configured like the one in the figure below, such that the electrons sent through the tube hit the center of the screen. If the magnetic field were increased, where would they now hit the screen (from the electron's point of view)?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617934/nv.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (14.0K)</a>]]> A) above the center B) to the left of center C) to the right of center D) below the center 23 B = 7.2×10-2 T, q = 1.60×10-19 C, r = 0.085 m, and V = 110 V. Find the mass of an oxygen atom.A) 2.7×10-24 kg B) 8.9×10-24 kg C) 2.7×10-26 kg D) 4.3×10-26 kg 24 A) q /m = Bqv B) q /m = Br /v C) m /q = v /Br D) q /m = v /Br 25 -31 kg moves through a cathode-ray tube with a speed of 2.6×106 m/s across and perpendicular to a magnetic field of 4.2×10-2 T. The electric field is turned off. What is the radius of the circular path followed by the electron?A) 8.1×10-1 m B) 3.5×104 m C) 4.6×103 m D) 3.5×10-4 m 26 A) cathode-ray tube B) mass spectrometer C) antenna D) electron microscope 27 4 m/s as it passes through and is perpendicular to a 0.50-T uniform magnetic field. Find the radius of the circular path.A) 5.0×101 m B) 8.2×10-3 m C) 1.0×10-3 m D) 5.6×10-7 m 28 A Thompson tube is configured like the one in the figure below, such that the electrons sent through the tube with a particular velocity hit the center of the screen. If the velocity of the electrons were increased, where would they now hit the screen (from the electron's point of view)?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617934/nv.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (14.0K)</a>]]> A) to the right of center B) to the left of center C) below the center D) above the center 29 A) mass B) charge C) electron configuration D) velocity
.
