Question 1

A light bulb is connected to a 110-V source.What is the resistance of this bulb if it is a 100-W bulb?

Accepted Answer

A)  100 Ω 
B)  8.0 mΩ 
C)  6.0 mΩ 
D)  120 Ω 
E)  240 Ω 
A)  100 Ω 
B)  8.0 mΩ 
C)  6.0 mΩ 
D)  120 Ω 
E)  240 Ω

Question 2

If A > B,under what condition is |   -  
| = A - B?

Accepted Answer

A)  The statement is never true. 
B)  Vectors   and
  are in opposite directions. 
C)  Vectors   and
  are in the same direction. 
D)  Vectors   and
  re in perpendicular directions. 
E)  The statement is always true. 
A)  The statement is never true. 
B)  Vectors   and
  are in opposite directions. 
C)  Vectors   and
  are in the same direction. 
D)  Vectors   and
  re in perpendicular directions. 
E)  The statement is always true.

Question 3

Two automobiles traveling at right angles to each other collide and stick together.Car A has a mass of 1200 kg and had a speed of 25 m/s before the collision.Car B has a mass of 1600 kg.The skid marks show that,immediately after the collision,the wreckage was moving in a direction making an angle of 40° with the original direction of car A.What was the speed of car B before the collision,assuming that any other unbalanced forces are negligible?

Accepted Answer

A)  16 m/s 
B)  18 m/s 
C)  11 m/s 
D)  21 m/s 
E)  14 m/s 
A)  16 m/s 
B)  18 m/s 
C)  11 m/s 
D)  21 m/s 
E)  14 m/s

Question 4

Two objects of the same mass move along the same line in opposite directions.The first mass is moving with speed v. The objects collide,stick together,and move with speed 0.100v in the direction of the velocity of the first mass before the collision. What was the speed of the second mass before the collision?

Accepted Answer

A)  1.20v 
B)  10.0v 
C)  0.900v 
D)  0.800v 
E)  0.00v 
A)  1.20v 
B)  10.0v 
C)  0.900v 
D)  0.800v 
E)  0.00v

Question 5

If   = +4  
- 2  
- 3  
And  
= -4  
-2  
- 3  
,which of the following numbers is closest to the magnitude of  
-  
?

Accepted Answer

A)  8 
B)  7 
C)  9 
D)  10 
E)  11 
A)  8 
B)  7 
C)  9 
D)  10 
E)  11

Question 6

A 1.5-kg mass attached to an ideal massless spring with a spring constant of 20.0 N/m oscillates on a horizontal,frictionless track. At time t = 0.00 s,the mass is released from rest at x = 10.0 cm. (That is,the spring is stretched by 10.0 cm.)
(a)Find the frequency of the oscillations.
(b)Determine the maximum speed of the mass. At what point in the motion does the maximum speed occur?
(c)What is the maximum acceleration of the mass? At what point in the motion does the maximum acceleration occur?
(d)Determine the total energy of the oscillating system.
(e)Express the displacement x as a function of time t.

Accepted Answer

(a)0.58 Hz
(b)0.37 m/s
,at the

Question 7

A proton starting from rest travels through a potential of 1.0 kV and then moves into a uniform 0.040-T magnetic field. What is the radius of the proton's resulting orbit? (mproton = 1.67 × 10-27 kg,e = 1.60 × 10-19C)

Accepted Answer

A)  0.080 m 
B)  0.11 m 
C)  0.14 m 
D)  0.17 m 
A)  0.080 m 
B)  0.11 m 
C)  0.14 m 
D)  0.17 m

Question 8

For the circuit shown in the figure,I = 0.50 A and R = 12 Ω.What is the value of the emf ε?

Accepted Answer

A)  18 V 
B)  24 V 
C)  6.0 V 
D)  12 V 
E)  48 V 
A)  18 V 
B)  24 V 
C)  6.0 V 
D)  12 V 
E)  48 V

Question 9

When a fixed amount of ideal gas goes through an isochoric process

Accepted Answer

A)  its internal (thermal) energy does not change. 
B)  the gas does no work. 
C)  no heat enters or leaves the gas. 
D)  its temperature must increase. 
E)  its pressure must increase. 
A)  its internal (thermal) energy does not change. 
B)  the gas does no work. 
C)  no heat enters or leaves the gas. 
D)  its temperature must increase. 
E)  its pressure must increase.

Question 10

A thin cylindrical shell is released from rest and rolls without slipping down an inclined ramp that makes an angle of 30° with the horizontal.How long does it take it to travel the first 3.1 m?

Accepted Answer

A)  1.4 s 
B)  1.1 s 
C)  2.1 s 
D)  1.6 s 
E)  1.8 s 
A)  1.4 s 
B)  1.1 s 
C)  2.1 s 
D)  1.6 s 
E)  1.8 s

Question 11

An isolated air-filled parallel-plate capacitor that is no longer connected to anything has been charged up to Q = 2.9 nC.The separation between the plates initially is 1.20 mm,and for this separation the capacitance is 31 pF.Calculate the work that must be done to pull the plates apart until their separation becomes 5.30 mm,if the charge on the plates remains constant.(ε0 = 8.85 × 10-12 C2/N • m2)

Accepted Answer

Question 12

A stopping potential of 0.50 V is required when a phototube is illuminated with monochromatic light of wavelength 590 nm.Monochromatic light of a different wavelength is now shown on the tube,and the stopping potential is measured to be 2.30 V.What is the wavelength of this new light? (c = 3.00 × 108 m/s,e = - 1.60 × 10-19 C,h = 6.626 × 10-34 J • s,1 eV = 1.60 × 10-19 J)

Accepted Answer

A)  320 nm 
B)  300 nm 
C)  340 nm 
D)  360 nm 
E)  410 nm 
A)  320 nm 
B)  300 nm 
C)  340 nm 
D)  360 nm 
E)  410 nm

Question 13

A heavy boy and a lightweight girl are balanced on a massless seesaw.If they both move forward so that they are one-half their original distance from the pivot point,what will happen to the seesaw? Assume that both people are small enough compared to the length of the seesaw to be thought of as point masses.

Accepted Answer

A)  It is impossible to say without knowing the masses. 
B)  It is impossible to say without knowing the distances. 
C)  The side the boy is sitting on will tilt downward. 
D)  Nothing will happen; the seesaw will still be balanced. 
E)  The side the girl is sitting on will tilt downward. 
A)  It is impossible to say without knowing the masses. 
B)  It is impossible to say without knowing the distances. 
C)  The side the boy is sitting on will tilt downward. 
D)  Nothing will happen; the seesaw will still be balanced. 
E)  The side the girl is sitting on will tilt downward.

Question 14

In the figure,a uniform rectangular crate 0.40 m wide and 1.0 m tall rests on a horizontal surface.The crate weighs 930 N,and its center of gravity is at its geometric center.A horizontal force F is applied at a distance h above the floor.If h = 0.61 m,what minimum value of F is required to make the crate start to tip over? Static friction is large enough that the crate does not start to slide.

Accepted Answer

The answer of In the figure,a uniform rectangular crate 0.40...

Question 15

A circular loop of radius 0.10 m is rotating in a uniform external magnetic field of 0.20 T. Find the magnetic flux through the loop due to the external field when the plane of the loop and the magnetic field vector are
(a)parallel.
(b)perpendicular.
(c)at an angle of 30° with each other.

Accepted Answer

(a)zero 
(

Question 16

A parallel-plate capacitor,with air between the plates,is connected across a voltage source.This source establishes a potential difference between the plates by placing charge of magnitude 4.15 × 10-6 C on each plate.The space between the plates is then filled with a dielectric material,with a dielectric constant of 7.74.What must the magnitude of the charge on each capacitor plate now be,to produce the same potential difference between the plates as before?

Accepted Answer

Question 17

The inductor in a radio receiver carries a current of amplitude 200 mA when a voltage of amplitude 2.40 V is across it at a frequency of 1400 kHz.What is the value of the inductance?

Accepted Answer

A)  1.43 µH 
B)  1.36 µH 
C)  9.20 µH 
D)  4.42 µH 
E)  1.97 µH 
A)  1.43 µH 
B)  1.36 µH 
C)  9.20 µH 
D)  4.42 µH 
E)  1.97 µH

Question 18

A plane flies directly between two cities,A and B,which are separated by 2300 mi.From A to B,the plane flies into a 65 mi/h headwind.On the return trip from B to A,the wind velocity is unchanged.The trip from B to A takes 65 min less than the trip from A to B.What is the airspeed of the plane,assuming it is the same in both directions?

Accepted Answer

A)  530 mi/h 
B)  400 mi/h 
C)  480 mi/h 
D)  610 mi/h 
A)  530 mi/h 
B)  400 mi/h 
C)  480 mi/h 
D)  610 mi/h

Question 19

A 4.00-Ω resistor,an 8.00-Ω resistor,and a 24.0-Ω resistor are connected together.
(a)What is the maximum resistance that can be produced using all three resistors?
(b)What is the minimum resistance that can be produced using all three resistors?
(c)How would you connect these three resistors to obtain a resistance of 10.0 Ω?
(d)How would you connect these three resistors to obtain a resistance of 8.00 Ω?

Accepted Answer

(a)36.0 Ω
(b)2.40 Ω
(c)Connect the 8.00-

Question 20

Two square air-filled parallel plates that are initially uncharged are separated by 1.2 mm,and each of them has an area of 190 mm2.How much charge must be transferred from one plate to the other if 1.1 nJ of energy are to be stored in the plates? (ε00 = 8.85 × 10-12 C2/N • m2)

Accepted Answer

A)  56 pC 
B)  39 pC 
C)  78 pC 
D)  3.5 µC 
A)  56 pC 
B)  39 pC 
C)  78 pC 
D)  3.5 µC

Exam 1: A: Foundations

A light bulb is connected to a 110-V source.What is the resistance of this bulb if it is a 100-W bulb?

If A > B,under what condition is | - | = A - B?

If = +4 - 2 - 3 And = -4 -2 - 3 ,which of the following numbers is closest to the magnitude of - ?

A proton starting from rest travels through a potential of 1.0 kV and then moves into a uniform 0.040-T magnetic field. What is the radius of the proton's resulting orbit? (mproton = 1.67 × 10-27 kg,e = 1.60 × 10-19C)

For the circuit shown in the figure,I = 0.50 A and R = 12 Ω.What is the value of the emf ε?

When a fixed amount of ideal gas goes through an isochoric process

A thin cylindrical shell is released from rest and rolls without slipping down an inclined ramp that makes an angle of 30° with the horizontal.How long does it take it to travel the first 3.1 m?

A circular loop of radius 0.10 m is rotating in a uniform external magnetic field of 0.20 T. Find the magnetic flux through the loop due to the external field when the plane of the loop and the magnetic field vector are (a)parallel. (b)perpendicular. (c)at an angle of 30° with each other.

The inductor in a radio receiver carries a current of amplitude 200 mA when a voltage of amplitude 2.40 V is across it at a frequency of 1400 kHz.What is the value of the inductance?

Two square air-filled parallel plates that are initially uncharged are separated by 1.2 mm,and each of them has an area of 190 mm2.How much charge must be transferred from one plate to the other if 1.1 nJ of energy are to be stored in the plates? (ε00 = 8.85 × 10-12 C2/N • m2)

Foundations

Motion in One Dimension

Acceleration

Momentum

Energy

Principle of Relativity

Interactions

Force

Work

Motion in a Plane

Motion in a Circle

Torque

Gravity

Special Relativity

Periodic Motion

Waves in One Dimension

Waves in Two and Three Dimensions

Fluids

Entropy

Energy Transferred Thermally

Degradation of Energy

Electric Interactions

The Electric Field

Gausss Law

Work and Energy in Electrostatics

Charge Separation and Storage

Magnetic Interactions

Magnetic Fields of Charged Particles in Motion

Changing Magnetic Fields

Changing Electric Fields

Electric Circuits

Electronics

Ray Optics

Wave and Particle Optics

Filters

A proton starting from rest travels through a potential of 1.0 kV and then moves into a uniform 0.040-T magnetic field. What is the radius of the proton's resulting orbit? (m_proton = 1.67 × 10^-27 kg,e = 1.60 × 10^-19C)

Two square air-filled parallel plates that are initially uncharged are separated by 1.2 mm,and each of them has an area of 190 mm².How much charge must be transferred from one plate to the other if 1.1 nJ of energy are to be stored in the plates? (ε₀₀ = 8.85 × 10^-12 C²/N • m²)