CHAPTER Maxwell's Equations and Electromagnetic Waves
32
1* A parallel-plate capacitor in air has circular plates of radius 2.3 cm separated by 1.1 mm. Charge is flowing onto the upper plate and off the lower plate at a rate of 5 A. (a) Find the time rate
CHAPTER
19
Heat and the First Law of Thermodynamics
1* Body A has twice the mass and twice the specific heat of body B. If they are supplied with equal amounts of heat, how do the subsequent changes in their temperatures compare? M A = 2M B; cA = 2cB; C =
CHAPTER
18
Temperature and the Kinetic Theory of Gases
1* True or false: (a) Two objects in thermal equilibrium with each other must be in thermal equilibrium with a third object. (b) The Fahrenheit and Celsius temperature scales differ only in the choice
CHAPTER
17
WaveParticle Duality and Quantum Physics
1* The quantized character of electromagnetic radiation is revealed by (a) the Young double -slit experiment. (b) diffraction of light by a small aperture. (c) the photoelectric effect. (d) the J.J. Thom
CHAPTER
16
Superposition and Standing Waves
1* True or false: (a) The waves from two coherent sources that are radiating in phase interfere constructively everywhere in space. (b) Two wave sources that are out of phase by 180o are incoherent. (c) Interfer
CHAPTER
15
Wave Motion
1* A rope hangs vertically from the ceiling. Do waves on the rope move faster, slower, or at the same speed as they move from bottom to top? Explain. They move faster as they move up because the tension increases due to the weight o
CHAPTER
14
Oscillations
1* Deezo the Clown slept in again. As he roller-skates out the door at breakneck speed on his way to a lunchtime birthday party, his superelastic suspenders catch on a fence post, and he flies back and forth, oscillating with an am
CHAPTER
13
Fluids
1* A copper cylinder is 6 cm long and has a radius of 2 cm. Find its mass. Find the volume, then m = V V = r2h = 75.4 10-6 m3; m = 8.93 103V = 0.673 kg 2 Find the mass of a lead sphere of radius 2 cm. Find the volume, then m = V Find the
CHAPTER
12
Static Equilibrium and Elasticity
1* True or false: (a) F = 0 is sufficient for static equilibrium to exist. (b) F = 0 is necessary for static equilibrium to exist. (c) In static equilibrium, the net torque about any point is zero. (d) An objec
CHAPTER
21
Thermal Properties and Processes
1* Why does the mercury level first decrease slightly when a thermometer is placed in warm water? The glass bulb warms and expands first, before the mercury warms and expands. 2 A large sheet of metal has a hole
CHAPTER
22
The Electric Field I: Discrete Charge Distributions
1* If the sign convention for charge were changed so that the charge on the electron were positive and the charge on the proton were negative, would Coulomb's law still be written the same? Ye
CHAPTER Magnetic Induction
30
1* A uniform magnetic field of magnitude 2000 G is parallel to the x axis. A square coil of side 5 cm has a single turn and makes an angle ? with the z axis as shown in Figure 30-28. Find the magnetic flux through the coil wh
CHAPTER Sources of the Magnetic Field
29
1* Compare the directions of the electric and magnetic forces between two positive charges, which move along parallel paths (a) in the same direction, and (b) in opposite directions. (a) The electric forces are rep
CHAPTER The Magnetic Field
28
1* When a cathode-ray tube is placed horizontally in a magnetic field that is directed vertically upward, the electrons emitted from the cathode follow one of the dashed paths to the face of the tube in Figure 28-30. The corr
CHAPTER
27
The Microscopic Theory of Electrical Conduction
1* In the classical model of conduction, the electron loses energy on average in a collision because it loses the drift velocity it had picked up since the last collision. Where does this energy a
CHAPTER
26
Electric Current and Direct-Current Circuits
1* In our study of electrostatics, we concluded that there is no electric field within a conductor in electrostatic equilibrium. How is it that we can now discuss electric fields inside a conductor?
CHAPTER
25
Electrostatic Energy and Capacitance
1* Three point charges are on the x axis: q 1 at the origin, q 2 at x = 3 m, and q 3 at x = 6 m. Find the electrostatic potential energy for (a) q 1 = q 2 = q 3 = 2 C, (b) q 1 = q 2 = 2 C and q 3 = 2 C, and
CHAPTER
24
Electric Potential
1*
A uniform electric field of 2 kN/C is in the x direction. A positive point charge Q = 3 C is released from rest at
the origin. (a) What is the potential difference V(4 m) V(0)? (b) What is the change in the potential ener
CHAPTER
23
The Electric Field II: Continuous Charge Distributions
1* A uniform line charge of linear charge density ? = 3.5 nC/m extends from x = 0 to x = 5 m. (a) What is the total charge? Find the electric fie ld on the x axis at (b) x = 6 m, (c) x = 9
CHAPTER
11
Gravity
1* True or false: (a) Kepler's law of equal areas implies that gravity varies inversely with the square of the distance. (b) The planet closest to the sun, on the average, has the shortest period of revolution about the sun. (a) False (
CHAPTER
10
Conservation of Angular Momentum
1* True or false: (a) If two vectors are parallel, their cross product must be zero. (b) When a disk rotates about its symmetry axis, is along the axis. (c) The torque exerted by a force is always perpendicular
CHAPTER Nuclear Physics
40
1* Give the symbols for two other isotopes of (a) 14N, (b) 56Fe, and (c) 118Sn (a) 15N, 16N; (b) 54Fe, 55Fe; (c) 114Sn, 116Sn 2 Calculate the binding energy and the binding energy per nucleon from the masses given in Table 40-1
CHAPTER
39
Relativity
1* You are standing on a corner and a friend is driving past in an automobile. Both of you note the times when the car passes two different intersections and determine from your watch readings the time that elapses between the two ev
CHAPTER
38
Molecules and Solids
1*Would you expect the NaCl molecule to be polar or nonpolar? NaCl is a polar molecule. 2 3 4 Would you expect the N2 molecule to be polar or nonpolar? N2 is a non-polar molecule. Does neon occur naturally as Ne or Ne2? Why
CHAPTER Atoms
37
1* As n increases, does the spacing of adjacent energy levels increase or decrease? The spacing decreases. 2 The energy of the ground state of doubly ionized lithium (Z = 3) is _ ,where E0 = 13.6 eV. (a) 9E0, (b) 3E0, (c) E0/3, (d)E0/9. (
CHAPTER
36
Applications of the Schrdinger Equation
1* True or false: Boundary conditions on the wave function lead to energy quantization. True 2 Sketch (a) the wave function and (b) the probability distribution for the n = 4 state for the finite square-w
CHAPTER Interference and Diffraction
35
1* When destructive interference occurs, what happens to the energy in the light waves? The energy is distributed nonuniformly in space; in some regions the energy is below average (destructive interference), in oth
CHAPTER Optical Images
34
1* Can a virtual image be photographed? Yes. Note that a virtual image is "seen" because the eye focuses the diverging rays to form a real image on the retina. Similarly, the camera lens can focus the diverging rays onto the film
CHAPTER Properties of Light
33
1* Why is helium needed in a heliumneon laser? Why not just use neon? The population inversion between the state E2,Ne and the state 1.96 eV below it (see Figure 33-9) is achieved by inelastic collisions between neon atoms a
CHAPTER
41
Elementary Particles and the Beginning of the Universe
1* How are baryons and mesons similar? How are they different? Similarities: Baryons and mesons are hadrons, i.e., they participate in strong interaction. Both are composed of quarks. Diffe