P.O.E. Warm-up Quiz #3

10 Questions | Total Attempts: 79

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P.O.E. Warm-up Quiz #3

Sept. 10 - Sept 14


Questions and Answers
  • 1. 
    Which of the following is a inexhaustable energy source?
    • A. 

      Wind

    • B. 

      Wood

    • C. 

      Coal

    • D. 

      Oil

  • 2. 
    Which process powers nuclear submarines?
    • A. 

      Nuclear fission

    • B. 

      Nuclear fusion

    • C. 

      Geothermal inversion

    • D. 

      Cosmic implosion

  • 3. 
    A net force of 18 N is exerted on an encyclopedia to cause it to accelerate at a rate of 4 m/s2. Determine the mass of the encyclopedia.
    • A. 

      4.5 kg

    • B. 

      72 kg

    • C. 

      4.5 lbs

    • D. 

      .222 lbs

  • 4. 
    Determine the kinetic energy of a 755-kg roller coaster car that is moving with a speed of 17.6 m/s.
    • A. 

      116,934 J

    • B. 

      42.90 J

    • C. 

      13,288 J

    • D. 

      2757 J

  • 5. 
    Suppose that a skateboard is accelerating at a rate of 1.5 m/s2. If the net force is 175 N, what is the mass of the baord and the passenger?
    • A. 

      116.7 Kg

    • B. 

      262.5 Kg

    • C. 

      78.8 Kg

    • D. 

      157.6 Kg

  • 6. 
    A 0.45 kg ball is placed at the top of a hill. How much potential energy does the ball have if the hill has an altitude of 7 meters?
    • A. 

      30.9 J

    • B. 

      3.15 J

    • C. 

      22.1 J

    • D. 

      1.58 J

  • 7. 
    Calculate the voltage difference in a circuit with a resistance of 18 Ω if the current in the circuit is 0.8 A.
    • A. 

      14.4 v

    • B. 

      22.5 v

    • C. 

      0.044 v

    • D. 

      17.2 v

  • 8. 
    How much work is done on a cart if a 330 N force is exerted to move it 23.5 m to the east?
    • A. 

      7755 J

    • B. 

      14.04 J

    • C. 

      0.071 J

    • D. 

      76,077 J

  • 9. 
    A horse performs 12000 joules of work pulling a wagon for 27 seconds. What is the horse's power?
    • A. 

      444.44 watts

    • B. 

      324000 watts

    • C. 

      11973 watts

    • D. 

      12027 watts

  • 10. 
    An appliance with a resistance of 225 Ω is connected to a 120-v power supply.  How much current flows in the appliance?
    • A. 

      0.53 amps

    • B. 

      1.875 amps

    • C. 

      345 amps

    • D. 

      105 amps

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