CHAPTER
25
Electrostatic Energy and Capacitance
1* Three point charges are on the x axis: q1 at the origin, q2 at x = 3 m, and q3 at x = 6 m. Find the electrostatic potential energy for (a) q1 = q
CHAPTER
1
Systems of Measurement
1*
Which of the following is not one of the fundamental physical quantities in the SI system?
(a) mass (b) length (c) force (d) time (e) All of the above are fun
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 differen
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 Fahrenhe
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 fenc
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
CHAPTER
21
Thermal Properties and Processes
1* 2
Why does the mercury level first decrease slightly when a thermometer is placed in warm water? A large sheet of metal has a hole cut in the middl
CHAPTER
4
Newton's Laws
Note: For all problems we shall take the upward direction as positive unless otherwise stated. 1* 2 How can you tell if a particular reference frame is an inertial referen
CHAPTER
9
Rotation
1* Two points are on a disk turning at constant angular velocity, one point on the rim and the other halfway between the rim and the axis. Which point moves the greater distance
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 the
CHAPTER
5
Applications of Newton's Laws
1* Various objects lie on the floor of a truck moving along a horizontal road. If the truck accelerates, what force acts on the objects to cause them to acc
36.1. Model: S and S are inertial frames that overlap at t = 0. Frame S moves with a speed v = 5 m/s along the
x-direction relative to frame S. Visualize:
The figure shows a pictorial representation o
37.1. Visualize: By showing that a current is collected only when the cathode-ray green spot is on the
electrode, this was the first conclusive demonstration that cathode rays consist of negatively ch
38.1. Model: The photoelectric current depends on the potential V between the two electrodes, the nature of
the cathode metal, and the intensity of the light. Visualize: (a) When V > 0, all the emitte
39.1. Model: The sum of the probabilities of all possible outcomes must equal 1 (100%).
Solve: The sum of the probabilities is PA + PB + PC + PD = 1. Hence, 0.40 + 0.30 + PC + PD = 1 PC + PD = 0.30 Be
Solve: Absorption occurs from the ground state n = 1. Its reasonable to assume that the transition is from n = 1 to n = 2. The energy levels of an electron in a rigid box are h2 En = n 2 8mL2 The abso
41.1. Solve: (a) A 4p state corresponds to n = 4 and l = 1. From Equation 41.3, the orbital angular momentum
is L = 1(1 + 1)h = 2 h . (b) In the case of a 5f state, n = 5 and l = 3. So, L = 3(3 + 1)h
CHAPTER
6
Work and Energy
1* True or false: (a) Only the net force acting on an object can do work. (b) No work is done on a particle that remains at rest. (c) A force that is always perpendicular
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, CA = 4CB; TA = TB/4
how d
CHAPTER
7
Conservation of Energy
1* What are the advantages and disadvantages of using the conservation of mechanical energy rather than Newton's laws to solve problems? Generally simpler, involvi
CHAPTER Alternating-Current Circuits
31
Note: Unless otherwise indicated, the symbols I, V, E, and P denote the rms values of I, V, and E and the average power. 2 1* A 200-turn coil has an area of
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
CHAPTER
8
Systems of Particles and Conservation of Momentum
1* Give an example of a three-dimensional object that has no mass at its center of mass. A hollow sphere. 2 Three point masses of 2 kg
CHAPTER
20
The Second Law of Thermodynamics
1*
Where does the energy come from in an internal-combustion engine? In a steam engine? steam.
Internal combustion engine: From the heat of combustion
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 equi
CHAPTER
2
Motion in One Dimension
1*
What is the approximate average velocity of the race cars during the Indianapolis 500?
Since the cars go around a closed circuit and return nearly to the sta
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 t
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 of
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
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