text stringlengths 1.33k 10k |
|---|
acquires a charge of 5.0 109 C. How many electrons did the object gain? with a magnitude twice that of the negative charge on an electron. Is the electrostatic force of attraction on an electron in a helium atom equal to the force acting on the nucleus? Justify your answer. 10. Electrical forces are so strong that the... |
ns as you continue to study the phenomena associated with electric charges. In this chapter, you will begin by learning how knowledge of the forces related to electric charges led to the idea of fields, and you will compare different types of electric fields. Then you will learn how force is used to define the strength... |
s? 2. Are there any situations where there appears to be no observable effect on the lawn seeds? 3. Based on your observations of the patterns created by the lawn seeds on the surface of the oil, what conclusion can you make about the space around charged objects? Magnitude and Direction of an Electric Field The electr... |
the vertices of an equilateral triangle with sides of 2.00 cm, as shown in the figure below. Determine the net electric field at the third vertex of the triangle. 2.00 cm 2.00 cm 60° 60° 4.00 C 2.00 cm 4.00 C Answers 1. 3.43 1012 N/C [90.0°] 2. 1.56 1014 N/C [90.0°] 1.498 107 N/C Chapter 11 Electric field theory descri... |
d plate, as shown in Figure 11.20(b). Electric field lines extend perpendicularly toward a negatively charged plate. The electric field lines are uniform and parallel, as shown in Figure 11.20(c). (a) (b) (c) F F F F Figure 11.20 (a) Forces among three charges on the top surface of a flat, conducting plate (b) Uniform ... |
n to very large voltages. Electric Potential Energy and Electric Potential A Van de Graaff generator can generate up to 250 kV. Touching the dome not only produces the spectacular results shown in Figure 11.26, it can also cause a mild, harmless shock. On the other hand, touching the terminals of a wall socket, which h... |
ing rubbing is usually only in the order of a few microcoulombs. So, acquiring this potential requires a small amount of work to produce the energy needed. Even though the electric potential is high, the electric potential energy is low because of the extremely small charge. Concept Check Suppose the magnitude of a cha... |
tal car body. Why is this property useful to the occupants of the car if the car is struck by lightning? 5. A metal box is charged by touching it with 12. Explain why only one of the electroscopes a negatively charged object. (a) Compare the distribution of charge at the corners of the box with the faces of the box. (b... |
lerates toward the negative plate. Copy the diagram into your notebook, sketch the motion of the positive charge through the region between the plates, and determine the distance the positive charge moves toward the negative plate after 6.0 106 s have elapsed. Gravitational effects may be ignored in this case. electric... |
o the electric field at a point if Extensions 28. Explain why electric field lines can never cross. 29. A bird is inside a metal birdcage that is struck by lightning. Is the bird likely to be harmed? Explain. 30. Explain why charge redistributes evenly on the outside surface of a spherical charged object and accumulate... |
magnetic objects. If you suspend a magnet on a string and bring another magnet close to one of its poles, the suspended magnet will rotate, even though there is no visible contact between the two magnets. Magnets appeared to have the ability to exert forces that seemed to originate from the magnetic poles, and they cou... |
nd the cupped fingers indicate the direction of the circular magnetic field. (b) If the current is in a coil of conducting wire, the cupped fingers indicate the circular current and the straight thumb indicates the direction of the straight magnetic field within the coil Using the Wire-grasp Rule 1. Sketch the followin... |
in your answer. 2. What is the most probable cause of Earth’s magnetic behaviour? 3. What evidence is there on Earth that its magnetic field is not stable? Chapter 12 Properties of electric and magnetic fields apply in nature and technology. 591 12-PearsonPhys30-Chap12 7/24/08 3:35 PM Page 592 12.1 Check and Reflect 12... |
at types of particles would be attracted from the anode to the cathode of the CRT? Does the hand rule for these particles predict any of the deflections that you observed? 3. Explain how the observed deflections show that cathode rays consist of charged particles. 4. Can you use the hand rules to determine the type of ... |
igure 12.24 600 Unit VI Forces and Fields 12-PearsonPhys30-Chap12 7/24/08 3:35 PM Page 601 In this section, you have studied the deflection of a moving charged particle in a magnetic field. Applying this science, you learned not only the importance of this phenomenon in technologies, such as a television and a magnetro... |
agnetic force: F m IlB (2.10 A)(8.50 102 m)(4.20 103 T) 7.50 104 N Use the left-hand rule to determine the direction of the magnetic force, because the moving charges are negative: • Thumb points in the direction of the charge movement or current, into the page. • Extended fingers point in the direction of the external... |
mples described above all involve conductors moving through magnetic fields. The scientific explanation of how they generate electricity began with investigations over 200 years ago. Faraday’s and Henry’s Discoveries Most scientific discoveries are the result of many years of research and investigations. The process is... |
tic forces. In the design of the loudspeaker shown in Figure 12.38, a coil of wire, called a voice coil, surrounds the north pole of a very powerful external magnet at the back of the speaker. When your sound system sends an electric signal to the coil, a current is produced in the coil, which produces a magnetic field... |
proaches a coil of wire, the induced current generated in the coil produces a north pole to repel and oppose the approaching magnet. S N N S G Figure 12.43 Lenz’s law helps us explain that the direction of current induced in the coil has a magnetic field that exerts a force on the bar magnet that opposes the magnet’s m... |
tion of the current in the wire. 19. A drinking straw with a green grape at one end is suspended by a string from a hanging support. When either end of a magnet is brought close to the grape, repulsion occurs. Describe a possible reason for this effect. 20. An electron in a TV tube is moving at 7.00 106 m/s perpendicul... |
ted to other forms of energy. Chapter 12 Properties of electric and magnetic fields apply in nature and technology. 11-1 QuickLab, 11-2 Inquiry Lab Examples 11.1–11.4 Minds On activities, eSIM Examples 11.5, 11.6 Example 11.7 Example 11.8 Examples 11.10–11.12 Magnetic fields Cause of magnetism 12.1 Magnetic Forces and ... |
mbrane 40. In a chart, compare the similarities and differences between Newton’s law of universal gravitation and Coulomb’s law of electrostatics. 41. Determine the distance between two electrons if the mutual force of repulsion acting on them is 3.50 1011 N. 42. A neutral small hollow metal sphere is touched to anothe... |
riables needed to straighten the graph. (f) Use the graph-slope method and the data from the graph to determine the value of . (g) Use the formula-data substitution method to determine the value of . Skills Practice 77. Draw a Venn diagram to review the similarities and differences between electric and magnetic fields.... |
ectromagnetic radiation. When EMR is absorbed by the tissues in the human eye, a compound called retinal changes in physical form from bent to straight. The retinal molecule, in turn, is connected to a membrane-bound protein called opsin forming the complex molecule called rhodopsin. When the retinal molecule changes i... |
its origins in the 17th century when the Dutch mathematician and scientist Christiaan Huygens argued that light consisted of waves. He suggested light waves could interfere to produce a wave front, travelling outward in a straight line. At the time, however, Huygens’ wave theory was overshadowed by the immense scientif... |
ng strength (Figure 13.12). Next, consider two of the electric field lines on the transverse wave, an upward one at one location and the corresponding downward one at another. Imagine a path connecting the tips of these two electric field vectors, as shown by the dotted line in Figure 13.13. You can see that the electr... |
es, by coding the information into dots and dashes, like the Morse code already used in telegraphy. Today, the dots and dashes have been replaced by an analog signal, which uses a continuous spectrum of values. In radio, sound waves in the range of 20–20 000 Hz (audible to humans) are converted into a weak electrical s... |
ntervals (every 42.5 h). However, he discovered that Io appeared to be eclipsed later than scheduled when Earth was farther away from Jupiter and earlier than scheduled when Earth was closer to Jupiter. The time difference between the longest and shortest periods was 22 min (Figure 13.21). 13-PearsonPhys30-Chap13 7/24/... |
in order to correctly measure the speed of light? 652 Unit VII Electromagnetic Radiation 9. The speed of light was measured to be 2.97 108 m/s using a 16-sided set of rotating mirrors and a fixed mirror separated by 5.00 103 m. At what frequency was the mirror rotating? 10. Students who measure the speed of light usin... |
ble to read the writing in their rear-view mirrors when the ambulance is approaching. M I N D S O N Image Characteristics Figure 13.33 shows (a) an image of an ambulance and (b) its image in a rear-view mirror. 1. What image characteristic is addressed by printing the word “ambulance” in reverse? 2. While standing in f... |
to the surface of a converging mirror? 2. What happens to the image as the object is brought closer to the surface of a diverging mirror? 3. What characteristics do all images formed in a 2 Complete ray diagrams for the image of your nose diverging mirror share? inside F, at F, at C, and at a distance, with respect to... |
image of the planet forms on a screen 45.0 cm from the vertex of the mirror. Find the focal length of the mirror and the image characteristics. Answers 1. di 6.67 cm; m 0.333 , virtual 2. (a) di 12 cm; m 2.0 , virtual, erect, enlarged (b) di 3.33 cm; m 0.333 , virtual, erect, diminished (c) di 1.7 cm; m 0.83 , virtual... |
crown glass. The light rays are incident on the crown glass at an angle of 35. Calculate the angle of refraction as the light enters the crown glass. Given 1 35 Required the angle of refraction ( 2) Analysis and Solution From Table 13.4, 1.33 • Index of refraction of water, the first medium, is n1 • Index of refractio... |
ey cannot be seen. When the angle of refraction is 90, the incident angle will have a value unique to the two media that form the interface. This unique angle of incidence is called the critical angle. For light travelling from a medium with a high refractive index to a medium with a low refractive index, the critical ... |
sm did not produce any more colours; only the red light emerged. As a second test, Newton placed a converging lens into the path of the spectrum of light and observed the resulting white light as an image on a sheet of white paper. slit aperture white light prism Based on his observations, Newton concluded that white l... |
ject distance, image distance, and focal length of a curved lens 1 di d i d ido 1 do d i d i f 1 di 1 f Notice that this equation is identical to the mirror equation. A sign convention will be used here also, to distinguish between real and virtual distances as well as to identify erect and inverted images. Sign Conven... |
el in a medium like water. And more importantly, you learned that the interference pattern contains information about the properties of the waves that created the pattern. In this section, we will investigate interference patterns produced by electromagnetic radiation and analyze the patterns to further our understandi... |
node bright antinodes (constructive interference) 4 3 2 1 bisector 1 P 2 3 4 screen 10 λ 9 λ S1 S2 d Figure 13.75 Two point sources, separated by a short distance, produce antinodal lines of constructive interference and nodal lines of destructive interference. Point sources, S1 and S2, from the same original source, a... |
our and wavelength ? 3. A student used light of wavelength 5.00 107 m and found that the distance between the third node and the central antinode was 1.00 101 m. If the screen was located 1.20 m away from the slits, how far apart are the slits? Answers 1. 5.4 107 m 2. 6.20 107 m, red 3. 1.50 105 m Poisson’s Bright Spot... |
by white light, a “simulated” screen will be used. Two metre-sticks and a lamp are arranged as shown in Figure 13.85. In this design, observers look through the diffraction grating to see the antinodes as they would appear on a screen behind 1 m θ2 θ1 thin-film diffraction grating θ1 θ2 Figure 13.85 694 Unit VII Elect... |
Page 698 CHAPTER 13 SUMMARY Key Terms and Concepts electromagnetic radiation frequency wavelength electromagnetic spectrum particle model wave model photon quantum model electric field magnetic field capacitor Maxwell’s Equations electromagnetic wave rectilinear propagation ray diagram plane mirror law of reflection v... |
n Maxwell’s explanation of EMR? 3. Describe the three-dimensional shape of an electromagnetic wave. Specify the directions of both the electric and magnetic field variations, and the direction of wave propagation. 4. Has Maxwell’s last prediction been verified by experimental evidence? If so, describe the evidence as i... |
orter the wavelength, the more energy that would be emitted. This prediction leads to a rather disturbing conclusion: If you strike a match, it will emit a little bit of light energy at long wavelengths (e.g., infrared), a bit more energy in the red part of the spectrum, more yet in the blue, even more in the ultraviol... |
e (infrared). Each image is produced by gases at different temperatures. X rays are produced by very-hightemperature gases (millions of degrees), whereas infrared light is usually emitted by low-temperature gases (hundreds of degrees). Chapter 14 The wave-particle duality reminds us that sometimes truth really is stran... |
emission from a metal; specific for every metal Figure 14.10 The kinetic energy of an electron emitted during photoemission is equal to the difference between the incident photon’s energy and the work needed to overcome the work function for the surface. One of the most successful experiments to investigate the photoel... |
incident light to kinetic energy of electrons and stopping potentials. In your design, be sure to address what you will need to measure and what variables will be involved, how to record and analyze your data, and how to use the data collected to answer the question. Prepare a research proposal for your teacher to det... |
21 14-PearsonPhys30-Chap14 7/24/08 3:57 PM Page 722 The laws of conservation of energy and of momentum can be applied to the X ray and the electron in the following way: • The total momentum of the incident X-ray photon must equal the total momentum of the scattered X ray and the scattered electron. • The total energy ... |
used to build microscopes capable of amazing magnification. The reason for their amazing magnification lies in the extremely small wavelengths associated with electrons. The usable magnification of a microscope depends inversely on the wavelength used to form the image. In a transmission electron microscope (TEM, Figur... |
nance and standing waves also apply to the electron. In order to fit a wave into a box, or finite space, the wave must have a node at each end of the box, and its wavelength must be related to the length of the box in the following way: n l 2 n where n is a whole number (n 1, 2, 3, …). Since there is a node at each end... |
icle, l is the length of the box, and n is one of the possible quantum states. (Hint: Remember that the wavelength of the nth standing wave confined to a box l.) 2 n of length l is n (a) How much energy does the electron e TEST acquire? (b) What is the wavelength of an electron of this energy? Ignore relativistic effec... |
oton photoelectric effect photoelectron threshold frequency work function stopping potential Compton scattering Compton effect wave-particle duality Heisenberg’s uncertainty principle quantum indeterminacy Key Equations E nhf hf W Ek Ekmax qVstopping p h i f h (1 cos ) m c Conceptual Overview Summarize this chapter by ... |
Chap14 7/24/08 3:58 PM Page 745 UNIT VII SUMMARY Unit Concepts and Skills: Quick Reference Summary Resources and Skill Building Concepts Chapter 13 Types of electromagnetic radiation Models of EMR Maxwell’s electromagnetic theory The wave model can be used to describe the characteristics of electromagnetic radiation. 1... |
e Moon’s orbit could be calculated after the Apollo mission placed large reflecting mirrors on the surface of the Moon. If a laser beam were directed at the mirrors on the Moon and the light was reflected back to Earth in 2.56 s, how far away, in kilometres, is the Moon? 44. When you increase the intensity of a green l... |
Particles 17.3 Probing the Structure of Matter 17.4 Quarks and the Standard Model Unit Themes and Emphases • Energy and Matter Focussing Questions The study of atomic structure requires analyzing how matter and energy are related. As you study this unit, consider these questions: • What is the structure of atoms? • How... |
de of the charge on the particle, v is the component of the particle’s velocity perpendicular to the magnetic field, and B is the magnitude of the magnetic field. For a particle moving perpendicular to a magnetic field, v v and F m qvB Consider the perpendicular electric and magnetic fields shown in Figure 15.4. The el... |
ce, medicine, and industry. Questions 1. Write an expression for the radius of the path of ions in a mass spectrometer. 2. How does the mass of an ion affect the radius of its path in the detection chamber? 3. Describe how you could use a mass spectrometer to detect an athlete’s use of a banned performance-enhancing dr... |
8.04 1019 C The net charge on the oil drop equals the number of electrons gained times the charge on each electron. Thus, q q ne and n e Note that n must be a whole number. q n e 8.04 1019 C 1.60 1019 C 5 Paraphrase The oil drop has gained five electrons. Chapter 15 Electric force and energy quantization determine atom... |
eus to calculate the proportion of the human body that is just empty space. The Planetary Model Rutherford’s discovery of the nucleus quickly led to the planetary model of the atom (Figure 15.15). In this model, the electrons orbit the nucleus much like planets orbiting the Sun. The electrostatic attraction between the... |
forms of lighting that use a vaporized element, such as sodium or mercury arc lamps. Often, a diffraction grating is the simplest method for observing a spectrum. Check with your teacher if you need directions for using a diffraction grating. Note the overall colour of the light from each element, and sketch or photog... |
ly. 4 Align the bottom edge of the diffraction grating with the x-axis on the paper. Hold the grating vertical by pressing a straight pin into the y-axis on either side of the grating. 5 Sight along the y-axis, and turn the cardboard or foamcore base so that the y-axis points directly toward the discharge tube. Now tap... |
man discovered this effect in 1896. It is known as the Zeeman effect. Physicists solved these problems within 15 years, but the solutions were even more radical than Bohr’s theory! The Wave Nature of Electrons In 1924, Louis de Broglie developed his theory that particles have wave properties. As described in section 14... |
change in energy level for the first three Paschen transitions. (b) Find the wavelengths and frequencies of the first three Paschen transitions. (c) Use E hf to calculate the energy of the photon produced by a transition from the n 5 to the n 3 energy level. Is your calculation consistent with your answer to part (a)?... |
composition of a nucleus with the notation A ZX, where X is the chemical symbol for the element. For example, a carbon nucleus with 6 protons and 6 neutrons has Z 6, N 6, and A 6 6 12. The notation for the carbon nucleus is 12 6C. Apply these terms and concepts in the next example. 790 Unit VIII Atomic Physics 16-Pear... |
age 791). m ZmH matom to find the mass defect. Nmneutron Nmneutron matom 6(1.007 825 u) 6(1.008 665 u) 12.000 000 u 0.098 940 u 1.660 539 1027 kg 1 u 1.6429 1028 kg Use the mass-energy equivalence to calculate the binding energy from the mass defect. 1 u 1.492 1010 J 931.5 MeV 0.098 940 u 1.492 1010 J 1 u 931.5 MeV 1 u... |
t is 226 Since the alpha particle carries away four nucleons, including two protons, A decreases by 4 and Z decreases by 2: ZX → A4 A So, the daughter element is 882 The periodic table shows that the element with Z 86 is radon. 2264Y 222 Z2Y 88Ra. 86Y. 4 2 Paraphrase For alpha decay, the daughter element of radium-226 ... |
structure of the cosmos as well. Concept Check How did physicists know that the neutrino must be neutral? Beta Decay, the Weak Nuclear Force, and Antimatter Careful study of beta decays revealed two further important differences from alpha decay. First, the transformation of a neutron into a proton involves a fundament... |
enetration Ionization Hazard alpha beta gamma Travels about 5 cm in air. Cannot penetrate skin. high Travels about 30–50 cm in air. Penetrates about 1 cm into the body. moderate Travels great distances in air. Penetrates right through the body. low low low high Although and particles are much less penetrating than gamm... |
Half-life Half-life is the time required for one-half of the radioactive nuclei in a sample to decay. For example, to diagnose thyroid problems, doctors sometimes inject patients with the radioactive isotope iodine-131, which has a half-life of about 192 h. Out of a dose of 20 g of iodine-131, 10 g will decay within 1... |
1 16 remains in the rock. Estimate the age of the rock given that the half-life of chlorine-36 is 3.0 105 years. 5. A radioactive tracer used in a medical test has a half-life of 2.6 h. What proportion of this tracer will remain after 24 h? 6. An archaeologist finds a wooden arrow shaft with a proportion of carbon-14 ... |
ice) 0.42 MeV (twice) (twice) 5.49 MeV (twice) 1 2 3 4 Total 1 2 1 1H 2 3 2H → 3 1 2He 2He 2 1 2He → 4 0 1 1H → 4 4 1 0 1 → 2 2He 2 0 1 neutrino positron H2 1 H2 1 positron neutrino 1H (twice) 2 7 ray He3 2 He3 2 ray 12.85 MeV 1.02 MeV (twice) 26.71 MeV ray He4 2 Figure 16.18 The protonproton chain Chapter 16 Nuclear r... |
ow that this process conserves charge and atomic mass number. 26. (a) What parent element decays into lead-208 by emitting an alpha particle? (b) Estimate the kinetic energy of the alpha particle. 27. (a) Write a complete decay process for the transmutation of 30 15P into 30 14Si. (b) Calculate the energy released in t... |
ins more vapour than it would normally hold at a given temperature and pressure. So, the liquid and vapour in a cloud chamber are not in equilibrium, and a tiny disturbance can trigger condensation of vapour into droplets of liquid. A charged particle speeding through the supersaturated air will ionize some molecules a... |
phrase The charge-to-mass ratio of the negative particle is 1.8 1011 C/kg. Since this ratio matches the ratio for an electron, this particle very likely is an electron. However, the other particle has a charge-to-mass ratio of 1.8 1011 C/kg. This particle appears to be a positron, an antimatter particle. 834 Unit VIII ... |
s using a refined version of quantum electrodynamics gave results that matched observed values with amazing accuracy — sometimes to 10 significant digits. Mediating Particles By 1970, research with high-energy particle accelerators led physicists to suggest that the strong nuclear force is mediated by zero-mass particl... |
celerators can make a variety of specialized industrial materials by, for example, modifying polymers and implanting ions in semiconductors and ceramics. Accelerators are also powerful tools for analyzing the structure and composition of materials. Particle accelerators have even been used to verify the authenticity of... |
e University of Alberta. In 1990, he shared the Nobel Prize in physics with Friedman and Kendall ▲ Figure 17.15 Scattering of high-energy electrons from a proton strange particle: a particle that interacts primarily via the strong nuclear force yet decays only via the weak nuclear force e WEB To learn more about the st... |
d weak nuclear forces string theory: theory that treats particles as quantized vibrations of extremely small strings of mass-energy Project LINK For your unit project, you may want to describe theories that unify the fundamental forces. 17.4 Check and Reflect 17.4 Check and Reflect Knowledge 1. What experimental eviden... |
telephone or e-mail. Many university departments have an outreach program that might suggest an expert you could consult. 3 Check whether the presentation method your group has chosen is suitable for the information you have found during your research. Consult with your teacher if you think you need to change to anoth... |
speed must the protons have if they are not deflected by this orientation of the fields? 28. Find the magnetic field strength that will deflect a sodium ion (Na) in an arc of radius 0.50 m when the ion has a speed of 1.0 106 m/s. 29. This diagram shows an electron moving at 2.5 106 m/s through perpendicular electric an... |
role in keeping a safe environment. Alberta Education has prepared a detailed document, “Safety in the Science Classroom”, outlining safety roles and responsibilities, and providing extensive information on potential hazards and safety procedures. This document is available online; go to www.pearsoned.ca/school/physics... |
rself looping through parts of the Planning and Retrieving stages again. Once you have good information, you need to decide how to display and analyze the data. What combination of data tables, graphs or graphic organizers should you use? Is there some mathematical analysis such as finding a slope, modelling a curve wi... |
ants needed identify inconsistent units and perform needed unit conversions identify “red herrings” (i.e., extra bits of numerical information not needed to solve the problem) note the least number of significant digits in the given data note directions (for vector quantities) rearrange the equation to solve for the un... |
re SR 5.2 shows the process of extrapolating the curve to find the mass of the system without any sand in the beaker. What is this value and what does it represent? How valid is the value? Calculating the Slope If the line of best fit is straight, the slope of the line can be found. The slope of the line is defined as ... |
our significant digits by using scientific notation and writing the mass as 2.000 103 kg. Good measurements have high degrees of both accuracy and precision. In order to assure better accuracy, instruments should be calibrated. Calibration involves making sure the scale divisions are spaced properly and that the zero r... |
angles is equal to the ratio of the length of the leg opposite the angle to the length of the leg adjacent to the angle. In general, the relationships are: Angle Sum The angles of a plane triangle add to 180°; the acute angles of a plane right triangle add to 90°. tan opp/adj tan a/b Appendix Student References 879 19-... |
ough the direct transfer of electrons when a charged object touches a neutral object (519) conductor material in which electrons in the outermost regions of the atom are free to move (513) forces that act conservative forces within systems but do not change their mechanical energy; includes gravity and elastic forces (... |
f transferring charge to and from Earth (521) H hadron subatomic particle that interacts via the strong nuclear force (842) half-life time it takes for half of the radioactive nuclei in a sample to decay (812) Heisenberg’s uncertainty principle it is impossible to know both the position and momentum of a particle with ... |
electron emitted from a metal because of the photoelectric effect (712) photon (from the Greek word meaning “light”) quantum of light; discrete packet of energy associated with an electromagnetic field (640) pion unstable subatomic particle with a mass roughly 270 times that of an electron (842) Planck’s formula light ... |
verse (311) isolated system (in the context of momentum) when mass of a system is constant and no external net force acts on the system (470) non-isolated system system in which there is an energy exchange with the surroundings (320) T tangent a curved-line graph at only one point (24) straight line that touches tensio... |
cliff] (b) 3.5 m/s [N] 14. 6.5 m/s [76° up] 15. (a) 30° W of N (c) 1.4 102 s 16. 1.82 m 17. 39 s 18. 2.18 s (b) 180° 4. (a) 0° 5. 1.47 102 N [13°] 6. 42 N [153°] 7. F F 1.50 102 N [125°], 1.50 102 N [55°] T1 T2 page 139, 3.2 Concept Check 19. (a) 17° S of W (b) 95 km/h v 17 km/s [toward interstellar space] 20. [42.2°]... |
8. (a) 1.20 104 N toward charge B (b) 7.49 103 N toward charge A page 540, Chapter 10 Review 11. 1.69 N—repulsive 12. 6.70 103 m 13. (a) 1.60 102 N [left] (b) 1.24 102 N [left] (b) 6.7 N 22. (a) 160 N 23. Fe Fg Fe 8.22 108 N 3.63 1047 N 2.27 1039 Fg 24. X—2.43 N [90°]; Y—2.43 N [210°]; Z—2.43 N [330°] 25. (b) Fe varie... |
and mass, 147 and net force, 146 of a mass-spring system, 366–369 units of, 23, 26 Acceleration due to gravity, 54–62 Acceleration-time graph, 26, 42 Accelerometer, 366 Action force, 160–167 Action-at-a-distance force, 200 Activity (also Decay) rate, 812 Adams, Henry, 617 Adams, John, 282 Air velocity, 92–97 Air, refr... |
9f–264, 277, 524, 838t 150f, 151f, 161f–167f, 172f–189f, 197f, 198f, 209f, 222f–224f, 226f Frequency, 249, 265–267, 344, 345, 408, Gravitational mass, 199 Gravitational potential energy, 295–298, 307–309, 312–316, 321, 560, 562 409, 429–432, 636, 637 Frequency modulation (FM), 646 Fresnel, Augustin, 691, 692f Fresnel l... |
imon, 691 Poisson’s Bright Spot, 692 Polar coordinates method, 77, 78 Polarization, 696 Polarizing filters, 696 Porro prism, 674 Position, 6 Position-time graphs, 11–18, 61, 62 Position-time graphs, vs Velocity-time graphs, 25, 26, 28, 41–44 Positron, 804, 836, 837 Positron-emission tomography (PET), 837 Potential ener... |
ing is changing. Q: In each picture in the Figure 1.1, what is moving and how is its position changing? A: The train and all its passengers are speeding straight down a track to the next station. The man and his bike are racing along a curving highway. The geese are flying over their wetland environment. The meteor is s... |
t is used for calculating average speed. It represents velocity only if the answer also includes the direction that the object is traveling. Let’s work through a sample problem. Toni’s dog is racing down the sidewalk toward the east. The dog travels 36 meters in 18 seconds before it stops running. The velocity of the d... |
e, the approximated slope is 43 m/s. Summary • The slope of a position versus time graph is the velocity. For a constant velocity motion, the slope gives the constant velocity, the average velocity, and the instantaneous velocity at every point. For constant acceleration motion, the slope of the position versus time cu... |
ppose a planner is designing an airport for small airplanes. Such planes must reach a speed of 56 m/s before takeoff and can accelerate at 12.0 m/s2. What is the minimum length for the runway of this airport? Solution: The acceleration in this problem is constant and the initial velocity of the airplane is zero, theref... |
e slope is the rise over the run, where the rise is the displacement and the run is the time. thus, Slope = vavg = Dx Dt Note: Slope of the tangent line for a particular point in time = the instantaneous velocity For a graph of velocity vs. time. The slope is the rise over the run, where the rise is the change in veloc... |
ing. Practice Video on the graphical method of adding vectors. http://www.youtube.com/watch?v=_Vppxdho6JU MEDIA Click image to the left for more content. 3 Review 1. On the following number line, add the vector 7.5 m/s and the vector -2.0 m/s. www.ck12.org 2. On a sheet of graph paper, add a vector that is 4.0 N due ea... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.