Heat flow occurs between two bodies in thermal contact when they differ in what property?
B. objects do not contain heat
Sea breezes that occur near the shore are attributed to a difference between land and water with respect to what property?
C. specific heat
As I use sandpaper on some rusty metal, the sandpaper gets hot because:
B. heat is flowing from my hand into the sandpaper
What is your body temp in Kelvin?
B. 371.75K
What is your body temp in Celsius?
D. 33C
A repelling force must occur between two charged objects under which conditions?
D. charges are of like signs
If the distance between two points charges is tripled, the mutual force between them will be changed by what factor?
A. 1/9
The constant ke which appears in Coulomb's law formula, is equivalent dimensionally to which of the following?
A. N·m2/C2
Electric field is dimensionally equivalent to which of the following?
B. N/C
The electric field of a point charge has an inverse __________ behavior.
D. r2
Who was the first to determine there was a positive and negative charge?
D. Franklin
Two point charges are 4cm apart. They are moved to a new separation of 2cm. By what factor does the resulting mutual force between them change?
B. 4
The unit of electrical potential, the volt, is dimensionally equivalent to?
C. J/C
The unit of capacitance, the farad, is dimensionally equivalent to which of the following?
D. C/V
Increasing the voltage across the two plates of a capacitor will produce what effect on the capacitor?
B. decrease capacitance
The zeroth law of thermodynamics pertains to what relational condition that may exist between two systems?
B. thermal equilibrium
Which best describes a system made up of a complete heat removal?
D. absolute zero
88 degrees C is how many degrees Kelvin?
B. 361
Normal body temperature for humans is 37C. What is this temperature in Kelvins?
c. 273
A. 310
Heat flow occurs between two bodies in thermal contact when they differ in what property?
A. temperature
Which of the following statements is true?
B. objects do not contain heat
Which type of heating causes sunburn?
C. radiation
There is no heat flow into or out of the system in an
A. adiabatic process
According to the first law of thermodynamics, the sum of the heat gained by a system and the work done on that same system ins equivalent to which of the following?
B. internal energy change
During an isobaric process which of the following does not change?
C. pressure
A 2.0-mol ideal gas system is maintained at a constant volume of 4.0-L. If 100J of heat is added, what is the work done on the system?
D. zero
If one's hands are being warmed by holding them to one side of a flame, the predominant form of heat transfer is what process?
A. radiation
When a wool blanket is used to keep warm, what is the primary insulating material?
B. air trapped between the wool fibers
The use o fiberglass insulation in the outer wall of a building is intended to minimize heat transfer through the wall by what process?
A. conduction
How does the heat energy from the sun reach us through the vacuum of space?
B. radiation
Which one of the following processes of heat transfer requires the presence of a fluid?
C. convection
Two capacitors with CA greater than CB are connected in series with a battery. Which of the following is true?
B. There is the same charge stored on each capacitor.
Two capacitors with CA greater than CB are connected in parallel with a battery. Which of the following is true
A. There is the same potential difference across both capacitors
Electrical charges and magnetic poles have many similarities, but one difference is:
B. a magnetic pole cannot be isolated
The force on a charged particle created by its motion in a magnetic field is maximum at what angle between the particle velocity and field?
B. 90
Assume that a uniform magnet field is directed into this page. If an electron is released with an initial velocity directed from the bottom edge to the top edge of the page, which of the following describes the direction of the resultant force acting on the electron? (right hand rule)
a. out of the page
b. to the right
c. to the left
d. into the page
b. to the right
The right-hand rule allows one to find a property of the interaction of a magnetic field with a charged particle. The right-hand rule applied to moving charges:
D. gives the direction of the force on a charge moving in a magnetic field.
A 2.0-m wire segment carrying a current of 0.60 A oriented parallel (Θ=0 or 180 degrees) to a uniform magnetic field of 0.50 T experiences a force of what magnitude?
C. zero
The direction of the force on a current carrying wire located in an external magnetic field is which of the following?
C. both choices a and b are valid
If a charged particle is moving in a uniform magnetic field, its path can be:
D. any of the above
A current in a long, straight wire produces a magnetic field. The magnetic field is:
A. form circles that go around the wire
Two parallel wire in opposite direction, will experience what type and of mutual force?
B. repulsive
Consider two long, straight parallel wires, each carrying a current I. If the currents are flowing in opposite directions:
B. the two wire will repel each other
A current in a solenoid (a device with a wire that has multiple turns) with N turns creates a magnetic field at the center of that loop. The field strength is directly proportional to:
C. both choices a and b are valid
According to Lenz's law the direction of an induced current in a conductor will be that which tends to produce which of the following effects?
B. oppose the effect which produces it
The principle of law that says "an induced emf in a circuit loop produces a current whose magnetic field opposes further change of magnetic flux" is credited to:
