Question 1

If, in a parallel universe, π has the value 3.14149, express π in that universe to four significant figures.

Accepted Answer

A)  3.141 
B)  3.142 
C)  3.1415 
D)  3.1414

Question 2

If the velocity of an object is zero at some point, then its acceleration must also be zero at that
point.

Accepted Answer

A) True 
 B)False

Question 3

The number 0.003010 has

Accepted Answer

A)  7 significant figures. 
B)  6 significant figures. 
C)  4 significant figures. 
D)  2 significant figures.

Question 4

A 90-gram wire that is 1.0 m long is under tension. When a transverse wave of frequency 890 Hz travels down the wire, its wavelength is 0.10 m and its amplitude is 6.5 mm. What is the tension in
The wire?

Accepted Answer

A)  1100 N 
B)  1000 N 
C)  820 N 
D)  710 N 
E)  930 N

Question 5

A heat pump with a performance coefficient (COP) of 4.9 absorbs heat from the atmosphere at a rate of 29 kW. At what rate is work being done to run this heat pump?

Accepted Answer

A)  35 kW 
B)  6 kW 
C)  113 kW 
D)  142 kW

Question 6

Consider a uniform horizontal electric field of 50 N/C directed toward the east. If the electric potential measured at a given point is 80 V, what is the potential at a point 1.0 m directly west of
That point?

Accepted Answer

A)  30 V 
B)  80 V 
C)  50 V 
D)  130 V

Question 7

A thermally isolated system is made up of a hot piece of aluminum and a cold piece of copper, with the aluminum and the copper in thermal contact. The specific heat capacity of aluminum is
More than double that of copper. Which object experiences the greater temperature change during
The time the system takes to reach thermal equilibrium?

Accepted Answer

A)  the copper 
B)  the aluminum 
C)  Neither one; both of them experience the same size temperature change. 
D)  It is impossible to tell without knowing the masses. 
E)  It is impossible to tell without knowing the volumes.

Question 8

An object is moving in a straight line with constant acceleration. Initially it is traveling at  16 m/s. Three seconds later it is traveling at  10 m/s. How far does it move during this time?

Accepted Answer

A)   48 m 
B)   57 m 
C)   30 m 
D)   39 m

Question 9

A toy rocket is launched vertically from ground level at time t = 0.00 s. The rocket engine provides constant upward acceleration during the burn phase. At the instant of engine burnout, the rocket
Has risen to 81 m and acquired an upward velocity of 40 m/s. The rocket continues to rise with Insignificant air resistance in unpowered flight, reaches maximum height, and falls back to the Ground. The upward acceleration of the rocket during the burn phase is closest to

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 10

A fluid in an insulated, flexible bottle is heated by a high resistance wire and expands. If 9.0 kJ of heat is applied to the system and it does 5.0 kJ of work, how much does the internal (thermal)
Energy of the fluid change?

Accepted Answer

A)  14 kJ 
B)  -4.0 kJ 
C)  4.0 kJ 
D)  45 kJ

Question 11

A ball vibrates back and forth from the free end of an ideal spring having a force constant (spring constant) of 20 N/m. If the amplitude of this motion is 0.30 m, what is the kinetic energy of the ball
When it is 0.30 m from its equilibrium position?

Accepted Answer

A)  0.00 J 
B)  1.4 J 
C)  0.45 J 
D)  0.90 J 
E)  0.22 J

Question 12

A rock is thrown directly upward from the edge of a flat roof of a building that is  56.3  meters tall. The rock misses the building on its way down, and is observed to strike the ground  4.00  seconds after being thrown. Take the acceleration due to gravity to have magnitude  and neglect any effects of air resistance. With what speed was the rock thrown?

Accepted Answer

The answer of A rock is thrown directly upward from...

Question 13

A coil with a self-inductance of 6.0 H has a constant current of 2.0 A flowing through it for 2.0 s. What is the emf induced in this coil?

Accepted Answer

A)  0.0 V 
B)  6.0 V 
C)  12 V 
D)  4.0 V 
E)  8.0 V

Question 14

An ideal parallel-plate capacitor consists of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery and charged until its plates carry charges +Q and -Q, and
The battery is then disconnected. If the separation between the plates is now doubled, the electrical
Energy stored in the capacitor will

Accepted Answer

A)  quadruple. 
B)  be cut in fourth. 
C)  not change. 
D)  double. 
E)  be cut in half.

Question 15

An object is moving with constant non-zero acceleration in the  direction. The velocity versus time graph of this object is

Accepted Answer

A)  a horizontal straight line. 
B)  a vertical straight line. 
C)  a straight line making an angle with the time axis. 
D)  a parabolic curve.

Question 16

Doubling the capacitance of a capacitor that is holding a constant charge causes the energy stored in that capacitor to

Accepted Answer

A)  decrease to one-fourth. 
B)  decrease to one-half. 
C)  double. 
D)  quadruple.

Question 17

When a ball is thrown straight up with no air resistance, the acceleration at its highest point

Accepted Answer

A)  reverses from downward to upward 
B)  is downward 
C)  reverses from upward to downward 
D)  is upward 
E)  is zero

Question 18

According to Lenz's law, the induced current in a circuit always flows to oppose the external
magnetic flux through the circuit.

Accepted Answer

A) True 
 B)False

Question 19

A car starts from rest and accelerates at a steady  How far does it travel in the first  3.00

Accepted Answer

A)  9.00 m 
B)  36.0 m 
C)  54.0 m 
D)  18.0 m 
E)  27.0 m

Question 20

What is the difference between 103.5 and 102.24 written with the correct number of significant figures?

Accepted Answer

A)  1 
B)  1.3 
C)  1.26 
D)  1.260 
E)  1.2600

Exam 2: Describing Motion: Kinematics in One Dimension

If, in a parallel universe, π has the value 3.14149, express π in that universe to four significant figures.

If the velocity of an object is zero at some point, then its acceleration must also be zero at that point.

The number 0.003010 has

A 90-gram wire that is 1.0 m long is under tension. When a transverse wave of frequency 890 Hz travels down the wire, its wavelength is 0.10 m and its amplitude is 6.5 mm. What is the tension in The wire?

A heat pump with a performance coefficient (COP) of 4.9 absorbs heat from the atmosphere at a rate of 29 kW. At what rate is work being done to run this heat pump?

Consider a uniform horizontal electric field of 50 N/C directed toward the east. If the electric potential measured at a given point is 80 V, what is the potential at a point 1.0 m directly west of That point?

An object is moving in a straight line with constant acceleration. Initially it is traveling at 16 m/s. Three seconds later it is traveling at 10 m/s. How far does it move during this time?

A fluid in an insulated, flexible bottle is heated by a high resistance wire and expands. If 9.0 kJ of heat is applied to the system and it does 5.0 kJ of work, how much does the internal (thermal) Energy of the fluid change?

A ball vibrates back and forth from the free end of an ideal spring having a force constant (spring constant) of 20 N/m. If the amplitude of this motion is 0.30 m, what is the kinetic energy of the ball When it is 0.30 m from its equilibrium position?

A coil with a self-inductance of 6.0 H has a constant current of 2.0 A flowing through it for 2.0 s. What is the emf induced in this coil?

An object is moving with constant non-zero acceleration in the direction. The velocity versus time graph of this object is

Doubling the capacitance of a capacitor that is holding a constant charge causes the energy stored in that capacitor to

When a ball is thrown straight up with no air resistance, the acceleration at its highest point

According to Lenz's law, the induced current in a circuit always flows to oppose the external magnetic flux through the circuit.

A car starts from rest and accelerates at a steady How far does it travel in the first 3.00

What is the difference between 103.5 and 102.24 written with the correct number of significant figures?