31 Pages

# Chapter 5

Course Number: PHYS 161,260,27, Spring 2008

College/University: Maryland

Word Count: 12445

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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 accelerate? Force of friction between the objects and the floor of the truck. 2 Any object resting on the floor of a truck will slide if the truck's acceleration is too great. How does the critical acceleration at which...

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Maryland - PHYS - 161,260,27
CHAPTER6Work and Energy1* 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 to the velocity of a particle never does work on
Maryland - PHYS - 161,260,27
CHAPTER Alternating-Current Circuits31Note: 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 4 cm and rotates in a magnetic field of 0.5 T. (a)
Maryland - PHYS - 161,260,27
CHAPTER9Rotation1* 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 in a given time? Which turns through the greater
Maryland - PHYS - 161,260,27
CHAPTER10Conservation of Angular Momentum1* 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 perp
Maryland - PHYS - 161,260,27
CHAPTER18Temperature and the Kinetic Theory of Gases1* 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 t
Maryland - PHYS - 161,260,27
CHAPTER Properties of Light331* 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
Maryland - PHYS - 161,260,27
CHAPTER8Systems of Particles and Conservation of Momentum1* 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 each are located on the x axis at the origin, x =
Maryland - PHYS - 161,260,27
CHAPTER20The Second Law of Thermodynamics1* Where does the energy come from in an internal-combustion engine? In a steam engine? steam.Internal combustion engine: From the heat of combustion (see Problems 19-106 to 19-109). Steam engine: Fr
Maryland - PHYS - 161,260,27
CHAPTER12Static Equilibrium and Elasticity1* 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. (
Maryland - PHYS - 161,260,27
CHAPTER2Motion in One Dimension1* 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 starting point, the displacement is nearly zero, and
Maryland - PHYS - 161,260,27
CHAPTER1Systems of Measurement1* 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 fundamental physical quantities. (c) Force is not a f
Maryland - PHYS - 161,260,27
CHAPTER11Gravity1* 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
Maryland - PHYS - 161,260,27
CHAPTER Maxwell's Equations and Electromagnetic Waves321* 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 t
Maryland - PHYS - 161,260,27
CHAPTER24Electric Potential1* A uniform electric field of 2 kN/C is in the x direction. A positive point charge Q = 3 C is released fromrest at the origin. (a) What is the potential difference V(4 m) V(0)? (b) What is the change in the pot
Maryland - PHYS - 161,260,27
CHAPTER22The Electric Field I: Discrete Charge Distributions1* 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
Maryland - PHYS - 161,260,27
CHAPTER23The Electric Field II: Continuous Charge Distributions1* 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 field on the x axis at (b) x = 6 m, (c)
Maryland - PHYS - 161,260,27
CHAPTER27The Microscopic Theory of Electrical Conduction1* 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
Maryland - PHYS - 161,260,27
CHAPTER4Newton's LawsNote: 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 reference frame? Suppose you find that an object in a par
Maryland - PHYS - 161,260,27
CHAPTER The Magnetic Field281* 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.
Maryland - PHYS - 161,260,27
CHAPTER3Motion in Two and Three Dimensions1* Can the magnitude of the displacement of a particle be less than the distance traveled by the particle along its path? Can its magnitude be more than the distance traveled? Explain. The magnitude of
Maryland - PHYS - 161,260,27
CHAPTER25Electrostatic Energy and Capacitance1* 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 = q2 = q3 = 2 C, (b) q1 = q2 = 2 C and q3 = 2 C, and
Maryland - PHYS - 161,260,27
CHAPTER26Electric Current and Direct-Current Circuits1* 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 co
Maryland - PHYS - 161,260,27
CHAPTER Sources of the Magnetic Field291* 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
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% ENME400 HW 3 d1=40;E1=25;v1=.45;d2=5.5;E2=200;v2=.3; Pmax=250; %A% % syms F a=(3/8)^(1/3)*(1-.3^2)/200E9+(1-.45^2)/25E9)/(1/.0055+1/.04)^(1/3)*F^(1/3) % a = 5966547068436287/147573952589676412928*F^(1/3) P=(3/(2*pi)*F/a^2 % P = 10398263182555662570
Maryland - PHYS - 261
David O'Brien Section : 0106 Experiment #1 1. f=a-b df/da = 1 and df/db = 1 f = [(df/da*a)2 + (df/db*b)2]1/2 = sqrt(.52 + .52)=.7071 error = .2 +/- .7071 f = [1*(.5/11.5)2 + 1*(.5/11.3)2]1/2 = .0631 11.5/11.3 = 1.018 1.018 +/- .0631 2. (11.0+11.4+1
Maryland - ENME - 400
David BeatusHW2This stuff is directly from my matlab mfile Sumarry of assignment on the last page. % HW2 Interference Fits ri=1;ro=1.505;Ei=10^7;vi=1/3; Ri=1.5;Ro=2;Eo=30E6;vo=.3; % %A solve('30E6*(R-1.5)/(R*(2^2+R^2)/(2^2-R^2)+.3)+10^7*(R1.505)/
Maryland - PHYS - 161
1 &quot;Exactly approximate&quot;: The ProblemThink about the following. You are in the laboratory using a scale to determine the masses of two blocks of wood. What you see on the scales is shown below:The following discussion takes place between you and yo
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Course PHYSICS260 Assignment 4 Due at 11:00pm on Wednesday, February 27, 2008A Simple Introduction to InterferenceDescription: Interference is discussed for pulses on strings and then for sinusoidal waves. Learning Goal: To understand the basic pr
Maryland - MATH - 241
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David O'Brien Prelab 5 1.) F = m*g*sin() A=F/m = g*sin() 2.)V=(.22-15)/(.2-.1) = .7m/s V1 = .7 V2 = .6m/s a =( v1-v2)/.1 = -1m/s^2
Maryland - PHYS - 260
Lecture 24 Charges at microscopic level understand insulators, conductors. Quantify force: Coulomb's law Charge at microscopic level I2 types of charges behave like positive and negative numbers, e.g. metal sphere is neutral after receivi
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EGN 3321 ENGINEERING ANALYSIS DYNAMICS Spring 2008INSTRUCTOR Christian Feldt Eng 1-367 Eng 1-324 Email: christianfeldt@yahoo.com Phone: 3-5640 (room 367) &amp; 3-4095 (room 324) Office hours: Monday, Tuesday 13:00 14:30; Thursday 8:30 10:00 Offices:
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