College Physics with MasteringPhysics 7th Edition

FIGURE 17-5 Which of the graphs in Fig. 17-5 indicates that a positive temperature coefficient is obeyed for the entire range shown? A) graph a B) graph b C) graph c D) graph d Answer: A Answer: A Answer: A As one stretches a metal rod, which condition is first reached? A) breaking point B) fracture point C) elastic limit D) proportional

A gas is confined to a rigid container that cannot expand as heat energy is added to it. This process is A) isothermal. B) isometric. C) isobaric. D) isentropic. E) adiabatic. Answer: B Answer: B Answer: B A 0.67 F parallel plate capacitor has air between the plates with a separation of 0.33 mm. (a) What is the plate

The rms speed of a certain sample of carbon dioxide molecules, with a molecular weight of 44g/mole, is 396 m/s. What is the rms speed of water molecules, with a molecular weight of 18 g/mol, at the same temperature? A) 253 m/s B) 387 m/s C) 421 m/s D) 506 m/s E) 619 m/s Answer:

Two large parallel metal plates are uniformly and oppositely charged and the electric field between them is 7.6 x 106 N/C. (a) What is the charge density on each plate? (b) If the very large charged plates are moved 2 times farther apart, what is the electric field between the plates now?

Which of the following operations will not change a vector? A) Translate it parallel to itself. B) Rotate it. C) Multiply it by a constant factor. D) Add a constant vector to it. E) Subtract a constant vector from it. Answer: A Answer: A Answer: A A charge q = 3 x 10-6 C of mass m =

My 5.0 hp mower would be equivalent to an electric mower rated at what power? A) 2.8 W B) 0.25 KW C) 2.8 KW D) 3.7 KW E) 0.78 KW Answer: D Answer: D Answer: D The word LASER is an acronym for A) Light Altered Spectra of Energy Radiated. B) LAtent Source of Enhanced Radiation. C) Light Amplification by the

A 1200. kg ferryboat is moving south at 20. m/s. Its momentum is A) 1.7 10-3 Ns B) 2.4 103 kgm/s C) 1.2 103 kgm/s D) 24. kNs E) 6.0 102 kgm/s Answer: D Answer: D Answer: D A coal-fired plant generates 600 MW of electric power. The plant uses 4.8 x 106 kg of coal each day.

A ray of light, which is traveling in air, is incident on a glass plate at a 45 angle. The angle of refraction in the glass A) is greater than 45. B) is less than 45. C) is equal to 45. D) is unknown because it all depends on the index of refraction of

According to Einstein's theory of general relativity, a ray of light bends in an accelerated frame of reference. Answer: TRUE Answer: TRUE Answer: TRUE A wave front is not a surface of constant phase within a wave. Answer: FALSE Answer: FALSE Answer: FALSE When a rigid body rotates about a fixed axis all the points in

An important reason for using a very large diameter objective in an astronomical telescope in space is A) to increase the magnification. B) to increase the resolution. C) to increase the width of the field of view. D) to form a virtual image, which is easier to look at. E) to increase the depth of

The concentric fringes, formed when a curved lens is placed on an optical flat, are called A) Galileo circles. B) Newton's rings. C) Young's rings. D) Faraday's circles. E) Maxwell circles. Answer: B Answer: B Answer: B Suppose that a particle is trapped in a box. How does the spacing in energy between adjacent energy levels change as

A convex lens is placed on a flat glass plate and illuminated from above with monochromatic red light. When viewed from above, concentric bands of red and dark are observed. What does one observe at the exact center of the lens where the lens and the glass plate are in

Michael and Misty are standing motionless together on the ice at the center of a very slippery frozen pond. Michael (mass 75. kg) pushes Misty (46. kg), giving her an acceleration of 1.8 m/s2 for 0.17 s while they were in contact. (a) What is Michael's acceleration? (b) Who exerts the greater

The pressure in a gas is the result of the momentum transfer that occurs when the molecules bounce from the walls of the container. Answer: TRUE Answer: TRUE Answer: TRUE Dimensional analysis can tell you whether an equation is physically correct. Answer: FALSE Answer: FALSE Answer: FALSE The process of changing the shape of the lens,

What is the intensity level of a sound with intensity 10-3 W/m2? A) 96 dB B) 30 dB C) 79 dB D) 90 dB E) 60 dB Answer: D Answer: D Answer: D An object 2.0 cm tall is placed 24. cm in front of a convex mirror whose focal length is 30. cm. (a) Where is the image

A surface on which all points are at the same potential is referred to as A) a constant electric force surface. B) a constant electric field surface. C) an equipotential surface. D) an equivoltage surface. E) a dielectric surface. Answer: C Answer: C Answer: C A light ray enters a glass enclosed fishtank. From air it enters the

An object moves in a direction parallel to its length with a velocity that approaches the velocity of light. The length of this object as measured by a stationary observer A) approaches infinity. B) approaches zero. C) increases slightly. D) does not change. Answer: B Answer: B Answer: B What is the result of adding 23.4 to

After landing on an unexplored Klingon planet, Spock tests for the direction of the magnetic field by firing a beam of electrons in various directions and by observing the following: Electrons moving upward feel a magnetic force in the NW direction; Electrons moving horizontally North are pushed down; Electrons moving horizontally South-East are

A force is required to keep an object moving along a horizontal line. Answer: FALSE Answer: FALSE Answer: FALSE When light travels from a larger index of refraction towards a smaller index of refraction, there is no phase change upon reflection at the boundary. Answer: TRUE Answer: TRUE Answer: TRUE If - = 0, then the

What primary wavelength and corresponding photon energy is emitted by a body at: (a) 400.C? (b) 800.C? (c) 1200.C? Answer: (a) 4.31 m, 0.288 eV(b) 2.70 m, 0.459 eV(c) 1.97 m, 0.630 eV Answer: (a) 4.31 m, 0.288 eV(b) 2.70 m, 0.459 eV(c) 1.97 m, 0.630 eV Answer: (a) 4.31 m, 0.288 eV (b) 2.70 m,

A mirror is rotated at an angle of 10 from its original position. How much is the rotation of the angle of reflection? A) 10 B) 5 C) 15 D) 20 E) 40 Answer: D Answer: D Answer: D An arrow is shot straight up. At the top of its path, the net force acting on it is A) instantaneously

If the Q-value is greater than zero for a nuclear reaction, the reaction is A) exoergic B) endoergic C) endothermic D) exdoergic E) not possible Answer: A Answer: A Answer: A A sound source approaches a stationary observer. The frequency heard by the observer is A) higher than the source. B) lower than the source. C) the same as that of

A car travels east with a constant velocity. The magnitude of the acceleration of the car is A) decreasing. B) increasing. C) constant non-zero. D) zero. E) None of the other choices is correct. Answer: D Answer: D Answer: D Young's modulus is a(n) A) strain. B) stress. C) breaking strength. D) elastic modulus. E) pressure limit. Answer: D Answer: D Answer: D A charged particle

In a nuclear power reactor of the type used to generate electricity, a neutron bombards a uranium nucleus, causing it to split into two large pieces (fission fragments) plus two or three neutrons. Energy is released in this process in the form of electromagnetic radiation and kinetic energy. Which of the following

A 0.32 kg ball is moving horizontally 30. m/s just before bouncing off a wall, thereafter moving 25. m/s in the opposite direction. (a) What is the magnitude of its change in momentum? (b) What percentage of the kinetic energy was lost in the collision? Answer: (a) 18. N-s(b) 31.% lost Answer: (a)

The electric field between the plates of a parallel plate capacitor is inversely proportional to the plate separation. Answer: TRUE Answer: TRUE Answer: TRUE The index of refraction for a given material is directly proportional to the frequency of light. Answer: FALSE Answer: FALSE Answer: FALSE A force can be exerted on an object and yet

A new car manufacturer advertises that their car can go "from zero to sixty in 8 s." This is a description of A) instantaneous speed. B) average speed. C) instantaneous acceleration. D) average acceleration. E) none of the given answers. Answer: D Answer: D Answer: D The moment of inertia of a uniform rod (about its center) is

A proton (1.67 10-27 kg) is accelerated to 99.8% the speed of light. How much energy did the accelerator have to impart? A) 14.8 GeV B) 13.9 GeV C) 38.9 GeV D) 7.52 GeV E) 223. GeV Answer: B Answer: B Answer: B A bar magnet is dropped, N pole down, so it falls through a horizontal loop

A transformer changes the 10,000 V power line to 120 V. If the primary coil contains 750 turns, how many turns are on the secondary? A) 3 B) 0 C) 9 D) 6.3 x 104 E) 2.1 x 104 Answer: C Answer: C Answer: C Relative to a stationary observer, a moving clock A) always runs slower than

The internal energy of an ideal gas depends on A) its pressure. B) its volume. C) its temperature. D) its temperature and pressure. E) its temperature, pressure, and volume. Answer: C Answer: C Answer: C Two vectors A and B have components (0, 1, 2) and (-1, 3, 1), respectively. (a) Determine the components of the sum of these

Kinetic energy is a scalar quantity. Answer: TRUE Answer: TRUE Answer: TRUE An electric generator is a device that converts electrical energy into mechanical energy. Answer: FALSE Answer: FALSE Answer: FALSE After striking a concave mirror, a paraxial beam of light passes through the mirror's focal point. Answer: TRUE Answer: TRUE Answer: TRUE A battery creates net electric charge.

An object is placed 6 cm from a concave mirror of radius 4 cm. Graphically determine: (a) the image position. (b) if the image is larger, smaller, or the same size as the object. (c) if the image is real or virtual. Answer: (a) FIGURE 23-7 (b) smaller(c) real Answer: (a) FIGURE 23-7 (b)

How much energy is carried by a photon of wavelength 660. nm? A) 1.46 x 10-48 J B) 3.01 x 10-19 J C) 6.63 x 10-34 J D) 5.39 eV E) 4.78 x 10-19 eV Answer: B Answer: B Answer: B Optical density is directly proportional to A) mass density. B) light speed. C) index of refraction. D) index of reflection. Answer:

Two violin strings, vibrating at 880. Hz and 876. Hz respectively, will cause a beat frequency of A) 4. Hz. B) 8. Hz. C) 16. Hz. D) 878. Hz. E) 1.76 kHz. Answer: A Answer: A Answer: A Refer to Fig. 5-8. How fast must the coaster be moving at P in order to coast to a stop

FIGURE 15-3 The electric field shown in Fig. 15-3 A) increases to the right. B) increases down. C) decreases to the right. D) decreases down. E) is uniform. Answer: A Answer: A Answer: A To accelerate your car at a constant acceleration, the car's engine must A) maintain a constant power output. B) develop ever-decreasing power. C) develop ever-increasing power. D) maintain a

When a rigid body rotates about a fixed axis all the points in the body have the same centripetal acceleration. Answer: FALSE Answer: FALSE Answer: FALSE The allowed values for the magnetic quantum number, m , are from m = - to +. Answer: TRUE Answer: TRUE Answer: TRUE Electrons come in discrete units of well

The magnetic field near a strong permanent bar magnet might be 500 A) microGauss. B) Tesla. C) Gauss. D) milliGauss. E) MT. Answer: C Answer: C Answer: C Spherical lenses suffer from A) both spherical and chromatic aberration. B) spherical aberration, but not chromatic aberration. C) neither spherical nor chromatic aberration. D) chromatic aberration, but not spherical aberration. Answer: A Answer: A Answer: A If

A circular loop of wire is rotated at constant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced emf is to be zero? A) Any

Consider two neighboring rectangular houses built from the same materials. One of the houses has twice the length, width, and height of the other. Under identical climatic conditions, what would be true about the rate that heat would have to be supplied to maintain the same inside temperature on a

Farsightedness can usually be corrected with A) cylindrical lenses. B) achromatic lenses. C) diverging lenses. D) converging lenses. Answer: D Answer: D Answer: D In state n = 1, the energy of the hydrogen atom is -13.58 eV. What is its energy in state n = 2? A) -1.51 eV B) -6.79 eV C) -3.40 eV D) -4.53 eV E) -5.89 eV

One cat meowing produces a sound intensity level of 55. db. (a) What would be the sound intensity level of 2 cats meowing? (b) ... of 10 cats meowing? (c) ... of 100 cats meowing? Answer: (a) 58. db(b) 65. db(c) 75. db Answer: (a) 58. db(b) 65. db(c) 75. db Answer: (a) 58. db (b)

The index of refraction of a certain medium is 1.5. What is the speed of light in that medium? A) 1.0 x 108 m/s B) 2.0 x 108 m/s C) 3.0 x 108 m/s D) 4.0 x 108 m/s E) 5.0 x 108 m/s Answer: B Answer: B Answer: B Consider a small satellite moving in a circular

Two men, Joel and Jerry, push against a wall. Jerry stops after 10 min, while Joel is able to push for 5.0 min longer. Compare the work they do. A) Joel does 75% more work than Jerry. B) Joel does 50% more work than Jerry. C) Jerry does 50% more work than Joel. D) Joel

Consider this reaction: n + N He + ? (a) What is the missing daughter nuclei in the reaction? (b) How many neutrinos are released by this reaction? Answer: (a) B(b) none Answer: (a) B(b) none Answer: (a) B (b) none Consider two uniform solid spheres where one has twice the mass and twice the diameter of

What is the wavelength of a neutron having a kinetic energy of 0.025 eV? (The mass of a neutron is 1.67 x 10-27 kg.) A) 3.7 x 10-24 m B) 2200 m C) 1100 m D) 1.8 x 10-10 m E) 3.2 x 10-20 m Answer: D Answer: D Answer: D Assuming a pupil diameter of 3. mm,

Compared to yesterday, you did 3 times the work in one-third the time. To do so, your power output must have been A) the same as yesterday's power output. B) one-third of yesterday's power output. C) 3 times yesterday's power output. D) 9 times yesterday's power output. E) 34 times yesterday's power output. Answer: D Answer:

You are a passenger on a spaceship. As the speed of the spaceship increases, you would observe A) your watch slowing down. B) your watch speeding up. C) your watch losing time. D) your watch gaining time. E) nothing unusual about your watch. Answer: E Answer: E Answer: E If the net work done on an object is

FIGURE 8-3 A 20.0-kg mass is supported by two strings as shown in Fig. 8-3. The left string is 2.00 m long and the right string is 5.00 m long. The attachment points for the two strings are 6.00 m apart on the ceiling. (a) What is the tension in the left

Two cars collide head-on. At every moment during the collision, the magnitude of the force the first car exerts on the second is exactly equal to the magnitude of the force the second car exerts on the first. This is an example of A) Newton's first law. B) Newton's second law. C) Newton's

On a cold winter day, the outside temperature is -20C and the inside temperature is maintained at 20C. There is a net heat flow to the outside through the walls, roof, etc., of 25 kW. What is the rate of increase of the entropy of the universe as a result

If - = and A " B = C, then the vectors and are oriented perpendicular relative to one other. Answer: FALSE Answer: FALSE Answer: FALSE A 2-L bottle of soda gives you more for your money than a 2-qt bottle would, at the same price. Answer: TRUE Answer: TRUE Answer: TRUE Electric potential decreases when

What happens to the kinetic energy of a speedy proton when its relativistic mass doubles? A) It doubles. B) It more than doubles. C) It less than doubles. D) It must increase, but it is impossible to say by how much. Answer: B Answer: B Answer: B Daisy (50. kg mass) skates on ice at 4.0 m/s

In the two-slit experiment, monochromatic light of wavelength 600 nm passes through a pair of slits separated by 2.20 x 10-5 m. (a) What is the angle corresponding to the first bright fringe? (b) What is the angle corresponding to the second dark fringe? Answer: (a) 1.56(b) 1.56 Answer: (a) 1.56(b) 1.56 Answer: (a) 1.56 (b)

A jet fighter plane is launched from a catapult on an aircraft carrier. It reaches a speed of 42 m/s at the end of the catapult, and this requires 2 s. Assuming the acceleration is constant, what is the length of the catapult? A) 16 m B) 42 m C) 24 m D) 66

When TOTAL REFLECTION occurs at a surface, the incident angle must be in the substance with the higher A) speed of light. B) index of refraction. C) incident angle. D) c/n. Answer: B Answer: B Answer: B The 5d subshell can contain how many electrons when filled? A) 21 B) 10 C) 7 D) 4 E) 14 Answer: B Answer: B Answer: B A resistor

If you push twice as hard against a stationary brick wall, the amount of work you do A) quadruples. B) doubles. C) is cut in half. D) remains constant but non-zero. E) remains constant at zero. Answer: E Answer: E Answer: E Sunlight reflected from the surface of a lake A) is unpolarized. B) tends to be polarized with its

The dedicated third wire on a 3-prong plug is connected to A) ground. B) a fuse. C) a ground fault interrupter. D) the "hot" wire. Answer: A Answer: A Answer: A Natural line broadening can be understood in terms of the A) de Broglie wave length. B) uncertainty principle. C) Schrodinger wave equation. D) Pauli exclusion principle. E) quantum numbers. Answer: B Answer:

Which graph(s) in Fig. 2-2 represent(s) zero acceleration? A) only a B) only b C) a and b D) b and c E) c and d Answer: C Answer: C Answer: C In electricity, what quantity is analogous to the "acceleration of gravity" g (which is a force per unit mass)? A) electric force B) electric field C) electric potential D) electric

FIGURE 12-7 The process shown on the T-V graph in Fig. 12-7 is an A) adiabatic compression. B) isothermal compression. C) isobaric compression. D) isometric compression. Answer: B Answer: B Answer: B A 200-g mass attached to the end of a spring causes it to stretch 5.0 cm. If another 200-g mass is added to the spring, the

Light consisting of a mixture of red and blue light enters a 40, 70, 70 prism along a line parallel to the side opposite the 40 vertex. The index of refraction of the prism material for blue light is 1.530, and for red light it is 1.525. What is the

Which of the following is an accurate statement? A) In vacuum, ultraviolet photons travel faster than infrared photons. B) Photons can have positive or negative charge. C) Infrared photons have enough energy to readily break bonds in a nucleic acid molecule like DNA. D) An ultraviolet photon has more energy than does an infrared

The process whereby heat flows by means of molecular collisions is referred to as A) conduction. B) convection. C) radiation. D) inversion. E) evaporation. Answer: A Answer: A Answer: A The L = 4 orbital number admits how many "orientations" of the orbital angular momentum vector? A) 8 B) 1 C) 5 D) 4 E) 9 Answer: E Answer: E Answer: E A 3300. kg auto

An airplane increases its speed from 100 m/s to 160 m/s, at the average rate of 15 m/s2. How much time does it take for the complete increase in speed? A) 0.25 s B) 4.0 s C) 0.0577 s D) 17.3 s E) 8.0 s Answer: B Answer: B Answer: B In each element of a series LRC

A home appliance is rated at 250. watts ic connected to 120. V. (a) What current does it draw? (b) What is its resistance? (c) How many kw-h does it use in one 24-hour day? Answer: (a) 2.08 A(b) 57.6 (c) 6.00 kw-h Answer: (a) 2.08 A(b) 57.6 (c) 6.00 kw-h Answer: (a) 2.08 A (b)