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Physics SAT Subject Test

Robert Jansen, Greg Young

Chapter 24

Practice Test - all with Video Answers

Educators

+ 7 more educators

Section 1

Practice Test 1

01:11

Problem 1

(A) Alpha decay
(B) Beta decay
(C) Gamma ray
(D) Fission
(E) Fusion
Select the term from above that identifies the nuclear reactions described in questions 1 to 3.
An isotope of bismuth, $_{83}^{214} \mathrm{Bi}$ , undergoes a transmutation into an isotope of polonium, $_{84}^{214} \mathrm{Po} .$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:07

Problem 2

(A) Alpha decay
(B) Beta decay
(C) Gamma ray
(D) Fission
(E) Fusion
Select the term from above that identifies the nuclear reactions described in questions 1 to 3.
$_{92}^{235} \mathrm{U}+_{0}^{1} \mathrm{n} \rightarrow_{38}^{90} \mathrm{Sr}+_{54}^{143} \mathrm{Xe}+3 \mathrm{n}+$ Energy

Sanu Kumar
Sanu Kumar
Numerade Educator
01:36

Problem 3

(A) Alpha decay
(B) Beta decay
(C) Gamma ray
(D) Fission
(E) Fusion
Select the term from above that identifies the nuclear reactions described in questions 1 to 3.
An isotope of thorium, $_{90}^{227} \mathrm{Th}$ undergoes a transmutation into an isotope of radium,$_{88}^{223} \mathrm{Ra}$

Sanu Kumar
Sanu Kumar
Numerade Educator
07:27

Problem 4

The following diagrams depict sound waves moving outward from a sound source.
(a) (FIGURE CAN'T COPY)
(b) (FIGURE CAN'T COPY)
(c) (FIGURE CAN'T COPY)
(d) (FIGURE CAN'T COPY)
(e) (FIGURE CAN'T COPY)
Which diagram depicts the sound waves created by a source moving with a speed
$v$ that is equal to the speed of sound?

Sanu Kumar
Sanu Kumar
Numerade Educator
07:05

Problem 5

The following diagrams depict sound waves moving outward from a sound source.
(a) (FIGURE CAN'T COPY)
(b) (FIGURE CAN'T COPY)
(c) (FIGURE CAN'T COPY)
(d) (FIGURE CAN'T COPY)
(e) (FIGURE CAN'T COPY)
Which diagram depicts the sound waves created by a source moving with a speed $v$ that is less than the speed of sound?

Sanu Kumar
Sanu Kumar
Numerade Educator
06:05

Problem 6

The following diagrams depict sound waves moving outward from a sound source.
(a) (FIGURE CAN'T COPY)
(b) (FIGURE CAN'T COPY)
(c) (FIGURE CAN'T COPY)
(d) (FIGURE CAN'T COPY)
(e) (FIGURE CAN'T COPY)
Which diagram depicts the sound waves created by a source moving with a speed $v$ that is greater than the speed of sound?

Sanu Kumar
Sanu Kumar
Numerade Educator
01:08

Problem 7

The following terms relate to circuits. Match the correct term with its definition.
(A) Capacitance
(B) Current
(C) Power
(D) Resistance
(E) Voltage
The rate of charge flow.

Sanu Kumar
Sanu Kumar
Numerade Educator
01:17

Problem 8

The following terms relate to circuits. Match the correct term with its definition.
(A) Capacitance
(B) Current
(C) Power
(D) Resistance
(E) Voltage
The rate of charge flow.
The rate of energy dissipation in a circuit.

Sanu Kumar
Sanu Kumar
Numerade Educator
01:11

Problem 9

The following terms relate to circuits. Match the correct term with its definition.
(A) Capacitance
(B) Current
(C) Power
(D) Resistance
(E) Voltage
The potential difference between the terminals of the battery.

Sanu Kumar
Sanu Kumar
Numerade Educator
02:08

Problem 10

Match the correct image description with the optical instruments depicted in questions
10 to 12.
(A) Real and inverted
(B) Real and upright
(C) No image forms, ray traces never intersect
(D) Virtual and inverted
(E) Virtual and upright
(FIGURE CAN'T COPY)

Sanu Kumar
Sanu Kumar
Numerade Educator
03:07

Problem 11

Match the correct image description with the optical instruments depicted in questions
10 to 12.
(A) Real and inverted
(B) Real and upright
(C) No image forms, ray traces never intersect
(D) Virtual and inverted
(E) Virtual and upright
(FIGURE CAN'T COPY)

Sanu Kumar
Sanu Kumar
Numerade Educator
02:47

Problem 12

Match the correct image description with the optical instruments depicted in questions
10 to 12.
(A) Real and inverted
(B) Real and upright
(C) No image forms, ray traces never intersect
(D) Virtual and inverted
(E) Virtual and upright
(FIGURE CAN'T COPY)

Sanu Kumar
Sanu Kumar
Numerade Educator
01:51

Problem 13

Use the following speed-time graph for the motion of an object to solve questions 13 to 15.
(GRAPH CAN'T COPY)
Determine the displacement during the first second (interval A).
(A) 10 $\mathrm{m}$
(B) 15 $\mathrm{m}$
(C) 20 $\mathrm{m}$
(D) 25 $\mathrm{m}$
(E) 30 $\mathrm{m}$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:42

Problem 14

Use the following speed-time graph for the motion of an object to solve questions 13 to 15.
(GRAPH CAN'T COPY)
During which interval is the object moving with a constant velocity?
(A) $A$
(B) $B$
(C) $C$
(D) $D$
(E) $A, B, D,$ and $E$

Sanu Kumar
Sanu Kumar
Numerade Educator
06:03

Problem 15

Use the following speed-time graph for the motion of an object to solve questions 13 to 15.
(GRAPH CAN'T COPY)
Which of the following is true when $t=6$ seconds?
I. The object is accelerating.
II. The object has an instantaneous speed of zero.
III. The object has returned to the origin.
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I, II, and III only

Sanu Kumar
Sanu Kumar
Numerade Educator
03:52

Problem 16

If a ball is thrown straight upward with an initial velocity of $v,$ it will reach a
height of $h .$ If the initial speed of the ball is doubled, what will be the new
maximum height?
(A) $\sqrt{2}(h)$
(B) 2$h$
(C) 2$\sqrt{2}(h)$
(C) 2$\sqrt{2}(h)$
(D) 4$h$
(E) 4$\sqrt{2}(h)$

Sanu Kumar
Sanu Kumar
Numerade Educator
03:01

Problem 17

A mass, initially at rest, is accelerated uniformly at 5.0 meters per second squared. Determine the displacement and final speed of the mass after 2.0 seconds have passed.

Sanu Kumar
Sanu Kumar
Numerade Educator
05:16

Problem 18

During a time of 5.0 seconds, an object moves through a half circle with a radius of 10 meters, as shown above. What is the magnitude of the object's velocity during this motion?
(A) 2 $\mathrm{m} / \mathrm{s}$
(B) $\pi \mathrm{m} / \mathrm{s}$
(C) 4 $\mathrm{m} / \mathrm{s}$
(D) 2$\pi \mathrm{m} / \mathrm{s}$
(E) 4$\pi \mathrm{m} / \mathrm{s}$

Vishal Sharma
Vishal Sharma
Numerade Educator
02:05

Problem 19

A boat capable of moving at 5 meters per second attempts to cross a 50-meter wide river. The river flows downstream at 2 meters per second. The boat begins at point $P$ and ains for point $Q,$ a point direcly across the river. How far downstream, from point $Q,$ will the boat drift?
(A) 0 $\mathrm{m}$
(B) 10 $\mathrm{m}$
(C) 20 $\mathrm{m}$
(D) 30 $\mathrm{m}$
(E) 40 $\mathrm{m}$

Ronald Prasad
Ronald Prasad
Numerade Educator
02:47

Problem 20

A ball is thrown horizontally from the edge of a 5-meter-tall building. It lands 25 meters from the base of the building, as shown in the diagram above. With what initial speed was the ball thrown?
(A) 5 $\mathrm{m} / \mathrm{s}$
(B) 10 $\mathrm{m} / \mathrm{s}$
(C) 15 $\mathrm{m} / \mathrm{s}$
(D) 20 $\mathrm{m} / \mathrm{s}$
(E) 25 $\mathrm{m} / \mathrm{s}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
03:37

Problem 21

A flat railroad car is moving to the right at 5 $\mathrm{m} / \mathrm{s} .$ A person standing on the car
throws a ball straight upward at 20 $\mathrm{m} / \mathrm{s} .$ If air resistance is negligible, where will the ball be in relation to the person's new position at the time when the ball returns to its original starting height?
(A) The ball will land 20 meters in front of the person.
(B) The ball will land 10 meters in front of the person.
(C) The ball will land in the person's hand.
(D) The ball will land 10 meters behind the person.
(E) The ball will land 20 meters behind the person.

Sanu Kumar
Sanu Kumar
Numerade Educator
02:55

Problem 22

The diagram above depicts a projectile launched from point $A$ with a speed of $v$ at angle of $\theta,$ above the horizontal. Determine the speed of the projectile when it reaches its maximum height at point $B$ .
(A) 0
(B) $v$
(C) $\frac{1}{2} v$
(D) $v \cos \theta$
(E) $v \sin \theta$

Petros Markopoulos
Petros Markopoulos
Numerade Educator
02:58

Problem 23

A 5.0-kilogram mass is pulled along a rough horizontal surface by a string, as shown above. The coefficient of kinetic friction between the surface and the object is 0.10. The tension in the string is 30 newtons. Determine the acceleration of the object.
(A) 1 $\mathrm{m} / \mathrm{s}^{2}$
(B) 2 $\mathrm{m} / \mathrm{s}^{2}$
(C) 3 $\mathrm{m} / \mathrm{s}^{2}$
(D) 4 $\mathrm{m} / \mathrm{s}^{2}$
(E) 5 $\mathrm{m} / \mathrm{s}^{2}$

Aditya Sood
Aditya Sood
Numerade Educator
02:45

Problem 24

Mass $m$ is positioned on a frictionless $30^{\circ}$ incline, as shown above. It is kept stationary by a string that is parallel to the incline. Determine the tension in the string.
(A) $\frac{1}{4} mg$
(B) $\frac{1}{2} mg$
(C) $\frac{\sqrt{2}}{2} mg$
(D) $mg$
(E) 2$mg$

Sanu Kumar
Sanu Kumar
Numerade Educator
04:04

Problem 25

Two masses, $m_{1}=1 \mathrm{kg}$ and $m_{2}=3 \mathrm{kg}$ , are connected by a string that is draped over a pulley, as shown above. Mass 1 is positioned on a friction less horizontal surface,
while mass 2 hangs freely. The masses are released from rest. Determine the acceleration of mass 2 .
(A) 2.5 $\mathrm{m} / \mathrm{s}^{2}$
(B) 3.3 $\mathrm{m} / \mathrm{s}^{2}$
(C) 5.0 $\mathrm{m} / \mathrm{s}^{2}$
(D) 6.7 $\mathrm{m} / \mathrm{s}^{2}$
(E) 7.5 $\mathrm{m} / \mathrm{s}^{2}$

Sanu Kumar
Sanu Kumar
Numerade Educator
01:19

Problem 26

Earth $\left(\mathrm{m}=5.98 \times 10^{24}\right)$ kilograms pulls a 60 -kilogram person towards it with a force of 600 $\mathrm{N}$ . With what amount of force does the person pull Earth towards
themselves?
(A) 0 $\mathrm{N}$
(B) $\frac{1}{600} \mathrm{N}$
(C) 60 $\mathrm{N}$
(D) 600 $\mathrm{N}$
(E) $5.98 \times 10^{24} \mathrm{N}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
02:50

Problem 27

Three forces act on a mass, $m,$ as shown in the diagram above. The mass remains at rest. Determine the magnitude of force $F .$
(A) 6 $\mathrm{N}$
(B) 8 $\mathrm{N}$
(C) 10 $\mathrm{N}$
(D) 12 $\mathrm{N}$
(E) 14 $\mathrm{N}$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:32

Problem 28

What is the apparent weight of a 60-kilogram astronaut that is experiencing a rocket launch with an acceleration of 40 meters per second squared?
(A) 600 N
(B) 1,200 N
(C) 1,800 N
(D) 2,400 N
(E) 3,000 N

Sanu Kumar
Sanu Kumar
Numerade Educator
01:22

Problem 29

Three masses are stacked on top of each other and are resting on the floor, as
shown above. Determine the net force acting on the 3-kilogram mass.
(A) 0 N
(B) 10 N
(C) 20 N
(D) 30 N
(E) 40 N

Vipender Yadav
Vipender Yadav
Numerade Educator
02:37

Problem 30

A 1.0 -kilogram mass is attached to the end of a 1.0 -meter-long string. When the apparatus is swung in a vertical circle, the tension in the rope at the very bottom of the circle has a magnitude of 110 newtons.
Determine the speed of the mass at the lowest point in the circle.
(A) 5 $\mathrm{m} / \mathrm{s}$
(B) 10 $\mathrm{m} / \mathrm{s}$
(C) 25 $\mathrm{m} / \mathrm{s}$
(D) 55 $\mathrm{m} / \mathrm{s}$
(E) 110 $\mathrm{m} / \mathrm{s}$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:55

Problem 31

A 1.0 -kilogram mass is attached to the end of a 1.0 -meter-long string. When the apparatus is swung in a vertical circle, the tension in the rope at the very bottom of the circle has a magnitude of 110 newtons.
Determine the minimum speed needed at the top of the loop in order for the mass to complete one cycle.
(A) 1.0 $\mathrm{m} / \mathrm{s}$
(B) 2.5 $\mathrm{m} / \mathrm{s}$
(C) $\sqrt{10} \mathrm{m} / \mathrm{s}$
(D) 5$\sqrt{10} \mathrm{m} / \mathrm{s}$
(E) 10 $\mathrm{m} / \mathrm{s}$

Sanu Kumar
Sanu Kumar
Numerade Educator
01:04

Problem 32

A 5.0-kilogram mass is moving in uniform circular motion with a radius of 1.0 meter and a frequency of 3.0 hertz.
Determine the tangential velocity of the mass.
(A) $\frac{1}{6} \pi \mathrm{m} / \mathrm{s}$
(B) $\frac{2}{3} \pi \mathrm{m} / \mathrm{s}$
(C) $\frac{3}{2} \pi \mathrm{m} / \mathrm{s}$
(D) 3$\pi \mathrm{m} / \mathrm{s}$
(E) 6$\pi \mathrm{m} / \mathrm{s}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
01:17

Problem 33

A 5.0-kilogram mass is moving in uniform circular motion with a radius of 1.0 meter and a frequency of 3.0 hertz.
Determine the centripetal acceleration of the mass.
(A) 3$\pi^{2} \mathrm{m} / \mathrm{s}^{2}$
(B) 6$\pi^{2} \mathrm{m} / \mathrm{s}^{2}$
(C) 12$\pi^{2} \mathrm{m} / \mathrm{s}^{2}$
(D) 36$\pi^{2} \mathrm{m} / \mathrm{s}^{2}$
(E) 72$\pi^{2} \mathrm{m} / \mathrm{s}^{2}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
View

Problem 34

A car of mass $m$ makes a turn with a radius of $r$ . The coefficient of friction between the tires and the road is $\mu$ . The maximum speed that the car can make the turn without skidding is $v$ . If the mass of the car is doubled, what is the new maximum speed in the turn?
(A) $\frac{1}{4} v$
(B) $\frac{1}{2} v$
(C) $v$
(D) 2$v$
(E) 4$v$

Ankur S
Ankur S
Numerade Educator
01:48

Problem 35

A 2.0-kilogram mass is pulled up a frictionless 30° incline at a constant speed of 0.5 meters per second.
Determine the force, $F,$ required to move up the incline at a constant speed of 0.5 $\mathrm{m} / \mathrm{s} .$
(A) 5 $\mathrm{N}$
(B) 10 $\mathrm{N}$
(C) 15 $\mathrm{N}$
(D) 20 $\mathrm{N}$
(E) 25 $\mathrm{N}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
01:53

Problem 36

A 2.0-kilogram mass is pulled up a frictionless 30° incline at a constant speed of 0.5 meters per second.
Determine the work done by force $F$ to move the mass to a vertical height of 2.0 meters.
(A) 0 $\mathrm{J}$
(B) 5 $\mathrm{J}$
(C) 10 $\mathrm{J}$
(D) 20 $\mathrm{J}$
(E) 40 $\mathrm{J}$

Sanu Kumar
Sanu Kumar
Numerade Educator
01:10

Problem 37

A 2.0-kilogram mass is pulled up a frictionless 30° incline at a constant speed of 0.5 meters per second.
Determine the power required to move the mass up the incline at constant speed.
(A) 0 $\mathrm{W}$
(B) 2.5 $\mathrm{W}$
(C) 5.0 $\mathrm{W}$
(D) 10 $\mathrm{W}$
(E) 20 $\mathrm{W}$

Sanu Kumar
Sanu Kumar
Numerade Educator
04:39

Problem 38

A 3.0-kilogram block is pressed against a spring that has a spring constant of 300 newtons per meter, as shown above. The block is moved to the left until the spring has been compressed 0.10 meters. The block and compressed spring are held in this stationary position for a brief amount of time. Finally, the block is released and the spring pushes the block to the right. What is the maximum speed reached by the block?
(A) 0 $\mathrm{m} / \mathrm{s}$
(B) 1 $\mathrm{m} / \mathrm{s}$
(C) 2 $\mathrm{m} / \mathrm{s}$
(D) 5 $\mathrm{m} / \mathrm{s}$
(E) 10 $\mathrm{m} / \mathrm{s}$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:37

Problem 39

What amount of force is required to change the speed of a $1,500$ -kilogram car by 10 meters per second in a time of 5 seconds?
(A) 500 $\mathrm{N}$
(B) $1,000 \mathrm{N}$
(C) $2,000 \mathrm{N}$
(D) $3,000 \mathrm{N}$
(E) $6,000 \mathrm{N}$

Sanu Kumar
Sanu Kumar
Numerade Educator
01:16

Problem 40

Which of these is true during an inelastic collision, in which no external forces act?
I. Linear momentum is conserved.
II. Kinetic energy is conserved.
III. The system loses energy as heat.
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I and III only

Alexander Cheng
Alexander Cheng
Numerade Educator
04:48

Problem 41

Two carts with masses 3 $\mathrm{m}$ and $m$ are placed on a horizontal track with a compressed spring positioned between them. The carts are released from rest. The 3$m$ cart moves to the left with a speed of $v$ . What is the speed of the cart on the
right in the diagram above?
(A) $\frac{1}{3} v$
(B) $\frac{1}{2} v$
(C) $v$
(D) 2$v$
(E) 3$v$

Sanu Kumar
Sanu Kumar
Numerade Educator
04:59

Problem 42

A satellite of mass $m$ orbits Earth at a height of $h$ and a speed of $v .$ What would the speed be for a satellite of mass 3 mat a height of $h ?$
(A) $\frac{1}{3} v$
(B) $v$
(C) $\sqrt{3} v$
(D) 3$v$
(E) 9$v$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:36

Problem 43

Determine the acceleration of gravity, in terms of $g,$ at a point in space that is located a distance equal to two Earth radii $\left(2 r_{E}\right)$ above the surface of Earth, shown in the figure above.
(A) $\frac{1}{9} g$
(B) $\frac{1}{4} g$
(C) $\frac{1}{3} g$
(D) $\frac{1}{2} g$
(E) $g$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:09

Problem 44

Determine the magnitude of the electric force acting on the 1 -coulomb charge in the
diagram above in terms of the Coulomb's law constant, $k$
(A) $\frac{1}{4} k$
(B) $\frac{1}{2} k$
(C) $k$
(D) 2$k$
(E) 4$k$

Sanu Kumar
Sanu Kumar
Numerade Educator
01:37

Problem 45

The direction of an electric field is
(A) determined by Lenz’s law
(B) determined by the right-hand rule
(C) the same as the direction of force acting on any type of charge
(D) the same as the direction of force acting on a negative charge
(E) the same as the direction of force acting on a positive charge

Sanu Kumar
Sanu Kumar
Numerade Educator
01:54

Problem 46

In the diagram, $+1-$ coulomb charge is located 2 meters to the left of the origin. A
$-1-$ coulomb charge is located 2 meters to the right of the origin. Determine the
electric potential, in terms of the Coulomb's law constant, $k,$ at point $P$ located at
the origin.
(A) zero
(B) $\frac{1}{4} k$
(C) $\frac{1}{2} k$
(D) $k$
(E) 2$k$

Sanu Kumar
Sanu Kumar
Numerade Educator
03:02

Problem 47

A conducting sphere with a mass of 1.0 kilograms and a charge of 3.0 coulombs is initially at rest. Determine its speed after being accelerated through a 6.0-volt
potential difference.
(A) 2.0 $\mathrm{m} / \mathrm{s}$
(B) 3.0 $\mathrm{m} / \mathrm{s}$
(C) 4.0 $\mathrm{m} / \mathrm{s}$
(D) 5.0 $\mathrm{m} / \mathrm{s}$
(E) 6.0 $\mathrm{m} / \mathrm{s}$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:49

Problem 48

Use the following circuit diagram to answer questions 48 to 50.
What current flows through the 1$\Omega$ resistor?
(A) 0.5 $\mathrm{A}$
(B) 1.0 $\mathrm{A}$
(C) 2.0 $\mathrm{A}$
(D) 3.0 $\mathrm{A}$
(E) 4.0 $\mathrm{A}$

Sanu Kumar
Sanu Kumar
Numerade Educator
01:16

Problem 49

Use the following circuit diagram to answer questions 48 to 50.
What is the voltage drop across the 1$\Omega$ resistor?
(A) 2 $\mathrm{V}$
(B) 4 $\mathrm{V}$
(C) 6 $\mathrm{V}$
(D) 8 $\mathrm{V}$
(E) 10 $\mathrm{V}$

Sanu Kumar
Sanu Kumar
Numerade Educator
01:29

Problem 50

Use the following circuit diagram to answer questions 48 to 50.
How much power is dissipated in the 1$\Omega$ resistor each second?
(A) 4 $\mathrm{W}$
(B) 10 $\mathrm{W}$
(C) 16 $\mathrm{W}$
(D) 20 $\mathrm{W}$
(E) 32 $\mathrm{W}$

Sanu Kumar
Sanu Kumar
Numerade Educator
05:40

Problem 51

In the circuit diagrams above, the resistors represent identical lightbulbs. Which circuit will have the brightest light bulbs?
(A) I only
(B) II only
(C) III only
(D) IV only
(E) The brightness of the light bulbs is the same in each circuit.

Sanu Kumar
Sanu Kumar
Numerade Educator
02:01

Problem 52

Charge $q$ moving with speed $v$ in the $+x$ -direction enters a uniform $-2$ magnetic field, $B,$ as shown in the diagram above. In what direction is the force of
magnetism acting on the charge at the instant the charge first enters the magnetic
field?
(A) $+x$
(B) $+y$
(C) $-y$
(D) $+Z$
(E) $-Z$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:27

Problem 53

The induced emf in the loop at the instant shown in the diagram above is
(A) 0
(B) $B L v$
(C) $\frac{B L v}{w}$
(D) $B w v$
(E) $\frac{v}{B L w}$

Sanu Kumar
Sanu Kumar
Numerade Educator
01:37

Problem 54

A pendulum is constructed with a string of length $L$ and a mass $m,$ as shown above. When the pendulum bob is displaced a distance $x$ from equilibrium, its period of oscillation is $T$ . What will be the new period if the mass, $m,$ and the displacement
from equilibrium, $x,$ are both doubled?
(A) $\frac{1}{4} T$
(B) $\frac{\sqrt{2}}{2} T$
(C) $T$
(D) $\sqrt{2} T$
(E) 4$T$

Sanu Kumar
Sanu Kumar
Numerade Educator
04:19

Problem 55

Which graph correctly depicts the kinetic energy of a mass experiencing simple harmonic motion?
(a) (FIGURE CAN'T COPY)
(b) (FIGURE CAN'T COPY)
(c) (FIGURE CAN'T COPY)
(d) (FIGURE CAN'T COPY)
(e) (FIGURE CAN'T COPY)

Sanu Kumar
Sanu Kumar
Numerade Educator
02:36

Problem 56

A sound wave emitted by a source has a frequency $f,$ a velocity $v,$ and a wavelength $\lambda$ . If the frequency is doubled, how will the speed and wavelength be affected?
(A) $v, \lambda$
(B) $2 v, \lambda$
(C) $v, 2 \lambda$
(D) $\frac{1}{2} v, \lambda$
(E) $v, \frac{1}{2} \lambda$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:06

Problem 57

The two wave pulses shown above are moving toward one another. Which diagram depicts the waveform at the instant that the waves overlap and superimpose?
(a) (DIAGRAM CAN'T COPY)
(b) (DIAGRAM CAN'T COPY)
(c) (DIAGRAM CAN'T COPY)
(d) (DIAGRAM CAN'T COPY)
(e) (DIAGRAM CAN'T COPY)

Sanu Kumar
Sanu Kumar
Numerade Educator
03:28

Problem 58

A guitar string vibrates in a manner resulting in a standing wave having a wavelength $\lambda$ being formed in the string. A listener hears the fundamental frequency, $f_{1},$ for this particular string. The string is plucked a second time in a manner that roduces the second harmonic for this string. How does the wavelength for the second harmonic compare with the wavelength at the fundemental frequency?
(A) $\frac{1}{2} \lambda$
(B) $\frac{\sqrt{2}}{2} \lambda$
(C) $\lambda$
(D) $\sqrt{2} \lambda$
(E) 2$\lambda$

Sanu Kumar
Sanu Kumar
Numerade Educator
03:21

Problem 59

The object viewed by a convex lens is positioned just inside of the focus, as
shown in the diagram above. Which of the following correctly describes the
image?
(A) No image is formed
(B) Real and upright
(C) Real and inverted
(D) Virtual and upright
(E) Virtual and inverted

Sanu Kumar
Sanu Kumar
Numerade Educator
03:55

Problem 60

Which diagram below correctly illustrates the path of a light ray moving from point
1 in air (to the left of the solid line) to point 2 in glass (to the right of the solid line)?
(a) (DIAGRAM CAN'T COPY)
(b) (DIAGRAM CAN'T COPY)
(c) (DIAGRAM CAN'T COPY)
(d) (DIAGRAM CAN'T COPY)
(e) (DIAGRAM CAN'T COPY)

Sanu Kumar
Sanu Kumar
Numerade Educator
03:22

Problem 61

An image formed by a convex mirror is
(A) real and upright
(B) real and inverted
(C) virtual and upright
(D) virtual and inverted
(E) No image is formed by this mirror.

Sanu Kumar
Sanu Kumar
Numerade Educator
03:59

Problem 62

Monochromatic light wavelength $\lambda$ passes through two narrow slits that are a distance $d$ apart. The resulting interference pattern appears as a series of alternating bright and dark regions on a screen located a length $L$ meters behind the slits. How could the experiment be altered so that the spacing between bright regions on the screen is decreased?
(A) Use light with a shorter wavelength.
(B) Decrease the distance from the slits to the screen.
(C) Increase the distance between the slits.
(D) Perform the experiment under water.
(E) All of the above.

Sanu Kumar
Sanu Kumar
Numerade Educator
06:35

Problem 63

The bending of light as it passes through a narrow opening, or slit, is known as
(A) absorption
(B) diffraction
(C) interference
(D) polarization
(E) refraction

Vishal Sharma
Vishal Sharma
Numerade Educator
04:25

Problem 64

Unpolarized light is projected onto two polarizing filters, as shown above. The polarizing filters contain thin threads all oriented parallel to one another. The filters are rotated with respect to each other, and two key positions are identified. In one position, no light is transmitted through the filter. In the other position, the maximum amount of light is transmitted. How must the microscopic threads in the two filters be oriented so that these results are witnessed?

Sanu Kumar
Sanu Kumar
Numerade Educator
01:56

Problem 65

A gas is trapped in a cylinder with a movable piston. How is the temperature, $T,$ of
the gas affected if the pressure of the gas doubles while the piston is moved inward, reducing the volume by half?
(A) $\frac{1}{4} T$
(B) $\frac{1}{2} T$
(C) $T$
(D) 2$T$
(E) 4$T$

MA
Mohamed Abd El Aziz
Numerade Educator
01:10

Problem 66

A metal washer is a flat, circular piece of metal with a hole through its center, as
pictured above. What will be the effect of heating this washer?
(A) No change occurs as the effects on the diameters cancel.
(B) Diameter 1 will decrease, and diameter 2 will decrease.
(C) Diameter 1 will decrease, and diameter 2 will increase.
(D) Diameter 1 will increase, and diameter 2 will decrease.
(E) Diameter 1 will increase, and diameter 2 will increase.

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
02:16

Problem 67

The specific heat of a liquid is $2,000$ joules/kilogram . kelvin. How much heat is required to raise the temperature of 3.0 kilograms of this liquid from $10^{\circ} \mathrm{C}$ to $30^{\circ} \mathrm{C} ?$
(A) 300 $\mathrm{J}$
(B) $13,333 \mathrm{J}$
(C) $30,000 \mathrm{J}$
(D) $60,000 \mathrm{J}$
(E) $120,000 \mathrm{J}$

Sanu Kumar
Sanu Kumar
Numerade Educator
02:20

Problem 68

During an isothermal process, 600 joules of heat are removed from a trapped gas.
Determine the work done on or by the gas and the change in internal energy of the system.
(A) $W=0 \mathrm{J} ; \Delta U=-600 \mathrm{J}$
(B) $W=0 \mathrm{J} ; \Delta U=+600 \mathrm{J}$
(C) $W=-600 \mathrm{J} ; \Delta U=0 \mathrm{J}$
(D) $W=+600 \mathrm{J} ; \Delta U=0 \mathrm{J}$
(E) None of the above.

Vysakh M
Vysakh M
Numerade Educator
02:17

Problem 69

Which of the following is true about an isometric process?
(A) No work is done.
(B) No change in volume occurs.
(C) No heat is exchanged.
(D) Both A and B.
(E) Both A and C.

Sanu Kumar
Sanu Kumar
Numerade Educator
02:51

Problem 70

A heat engine operates between $100^{\circ} \mathrm{C}$ and $500^{\circ} \mathrm{C}$ . The theoretical efficiency is
most nearly
(A) 10$\%$
(B) 20$\%$
(C) 50$\%$
(D) 70$\%$
(E) 80$\%$

Sanu Kumar
Sanu Kumar
Numerade Educator
04:03

Problem 71

The energy level diagram above shows a sample of atoms initially in the ground state. The atoms are radiated by photons having 9 electron volts of energy. After the absorption, photons are emitted by the sample of atoms. Several energies for the emitted photons are listed below. Which of these energies is NOT possible for photons emitted by the atom diagrammed above?
(A) 1 $\mathrm{eV}$
(B) 2 $\mathrm{eV}$
(C) 3 $\mathrm{eV}$
(D) 5 $\mathrm{eV}$
(E) 8 $\mathrm{eV}$

Sanu Kumar
Sanu Kumar
Numerade Educator
05:00

Problem 72

In a photoelectric experiment, the frequency of light is steadily increased. Which
statement below is NOT correct?
(A) Below the threshold frequency, no electrons are emitted.
(B) Above the threshold frequency, electrons are emitted.
(C) Increasing the frequency of light increases the energy of the emitted electrons.
(D) Increasing the frequency of light increases the potential difference of the
photocell.
(E) Increasing the frequency of light increases the induced current.

Vishal Gupta
Vishal Gupta
Numerade Educator
02:57

Problem 73

A radioactive sample with a half-life of 25 days is analyzed after 100 days. The amount of remaining radioactive material as a fraction of the original sample is most nearly
(A) $\frac{1}{32}$
(B) $\frac{1}{16}$
(C) $\frac{1}{8}$
(D) $\frac{1}{4}$
(E) $\frac{1}{2}$

Sanu Kumar
Sanu Kumar
Numerade Educator
01:10

Problem 74

A spacecraft with a speed of 0.99 $\mathrm{c}$ in the $+x$ -direction passes by a stationary observer. The dimensions of the spacecraft will appear altered along which
axis/axes?
(A) $x$ only
(B) $y$ only
(C) z only
(D) $y$ and z only
(E) $x, y,$ and $z$

Jayashree Behera
Jayashree Behera
Numerade Educator
03:34

Problem 75

Which scientist proposed three laws of planetary motion based upon observations
of the orbit of Mars?
(A) Galileo Galilei
(B) Johann Kepler
(C) James Maxwell
(D) Albert Michelson
(E) Isaac Newton

Sanu Kumar
Sanu Kumar
Numerade Educator