Physics Pre-test

40 Questions | Total Attempts: 1610

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Physics Quizzes & Trivia

This is the Physics Pre-test.


Questions and Answers
  • 1. 
    100mL is equal to
    • A. 

      1kL

    • B. 

      10-6 µL

    • C. 

      0.1 L

    • D. 

      0.01 ML

  • 2. 
    The linear momentum of a particle is the product of its mass and its velocity.  Consequently, the SI units of linear momentum
    • A. 

      Kg/ (m/s)

    • B. 

      Kg · m · s

    • C. 

      kg · m/s

    • D. 

      None of these

  • 3. 
    Newtow’s law of gravitation is an inverse-square law. When separated by a distance d, two unlike charges exert mutual attractive forces of magnitude F on each other.  If the separation distance between these charges are doubled, how strong are the mutual forces now?
    • A. 

      F/4

    • B. 

      F/2

    • C. 

      2F

    • D. 

      4F

  • 4. 
    An astronaut weighs 80N on earth where the acceleration due to gravity is approximately 10 m/s2. The mass of the astronaut at a point in space where the acceleration due to gravity is 4 m/s2 is roughly
    • A. 

      80 kg

    • B. 

      32 kg

    • C. 

      20 kg

    • D. 

      8 kg

  • 5. 
    Copper is a better conductor than paper. Relative to the resistance of a sample of copper, the resistance of an identically shaped sample of paper is
    • A. 

      Larger

    • B. 

      The same

    • C. 

      Smaller

    • D. 

      None of these

  • 6. 
    If an object has a constant velocity, then it:
    • A. 

      Moves with unchanging speed in a straight line.

    • B. 

      Moves with unchanging speed along a circle.

    • C. 

      Does not move at all.

    • D. 

      Either A or C.

  • 7. 
    The SI prefix ‘milli’ means
    • A. 

      10^-6

    • B. 

      10^+3

    • C. 

      10^-3

    • D. 

      10^+6

  • 8. 
    Which of the following is not an SI base quantity?
    • A. 

      Length

    • B. 

      Mass

    • C. 

      Weight

    • D. 

      Time

  • 9. 
    The unit of mass in the SI system
    • A. 

      Pound

    • B. 

      Gram

    • C. 

      Kilogram

    • D. 

      None of these

  • 10. 
    The metric prefix for 1/1000
    • A. 

      Centi

    • B. 

      Kilo

    • C. 

      Micro

    • D. 

      None of these

  • 11. 
    One milliliter is equal to one
    • A. 

      Cubic decimeter

    • B. 

      Cubic centimeter

    • C. 

      Cubic meter

    • D. 

      None of these

  • 12. 
    In terms of fundamental SI units, one newton is
    • A. 

      1 kg · m^2/s^2

    • B. 

      1 kg · m^2/s

    • C. 

      1 kg · m/s^2

    • D. 

      None of these

  • 13. 
    Two charged particles attract each other with a force of 1.0 N. If the magnitude of each charge is doubled and the distance between them is unchanged, the force will be
    • A. 

      4.0 N

    • B. 

      0.5 N

    • C. 

      1.0 N

    • D. 

      0.25 N

  • 14. 
    Which of the following bodies has the largest kinetic energy?
    • A. 

      Mass 2M with speed 3V

    • B. 

      Mass 3M with speed 2V

    • C. 

      Mass M with speed 4V

    • D. 

      Mass 3M with speed V

  • 15. 
    When an object thrown vertically upwards reaches its maximum height, it has
    • A. 

      Zero acceleration and zero velocity

    • B. 

      Zero acceleration and negative velocity

    • C. 

      Negative acceleration and zero velocity

    • D. 

      Negative acceleration and negative velocity

  • 16. 
    A battery of 3.0 V is placed across a wire of a 5.0 W lamp. The resulting current in the wire is  
    • A. 

      0.60 A

    • B. 

      15 A

    • C. 

      60 A

    • D. 

      125 A

  • 17. 
    An object attached to one end of a spring makes 20 vibrations in 10 seconds. The period of the object is
    • A. 

      2 Hz

    • B. 

      2 seconds

    • C. 

      0.5 seconds

    • D. 

      0.5 Hz

  • 18. 
    How many nanometers are there in one meter?
    • A. 

      10^-9

    • B. 

      10^+3

    • C. 

      10^-3

    • D. 

      10^+9

  • 19. 
    A kilowatt-hour is a unit of:
    • A. 

      Time

    • B. 

      Power

    • C. 

      Energy

    • D. 

      Voltage

  • 20. 
    Which of the following has three significant figures?
    • A. 

      305.0 cm

    • B. 

      1.00081 kg

    • C. 

      0.0500 mm

    • D. 

      8.060 x 1011 m^2

  • 21. 
    An apple falls from a tree.  Compare its kinetic energy, K, to its potential energy, U.
    • A. 

      K decreases and U decreases

    • B. 

      K is constant and U increases

    • C. 

      K increases and U decreases

    • D. 

      K increases and U is constant

  • 22. 
    The resistance of an object to changes in motion
    • A. 

      Acceleration

    • B. 

      Density

    • C. 

      Inertia

    • D. 

      None of these

  • 23. 
    The amount of space an object takes up
    • A. 

      Density

    • B. 

      Speed

    • C. 

      Mass

    • D. 

      None of these

  • 24. 
    Distance traveled in a period of time
    • A. 

      Motion

    • B. 

      Acceleration

    • C. 

      Speed

    • D. 

      None of these

  • 25. 
    W hich of these is the independent variable in a distance-time graph
    • A. 

      Time

    • B. 

      Distance

    • C. 

      Speed

    • D. 

      None of these

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