Physical Science

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1.Nico uses wire to connect a battery, light bulb, and a switch, but the light bulb doesn't light up. What might explain this problem?
A.The circuit is closed
B.The wires are bent
C.The battery has too much power
D.The switch is open.
B?

2.What type of wave doesn't require a medium to travel through?
A.light wave
B.sound wave
C.an ocean wave
D.a tidal wave
??

Thanks
-MC

  • Physical Science -

    light waves, as an electromagnetic wave, do not require a physical medium.

    No on the first on. Why would bent wires cause electricity not to flow?

  • Physical Science -

    So A?
    -MC

  • Physical Science -

    Goodness: MC, you don't know what the terms open and closed circuits mean. Review that, it is basic to all this.

  • Physical Science -

    Ummm OK, thanks
    -MC

  • Physical Science [got the answer] -

    OK, I got it
    D
    -MC

  • Physical Science -

    In order to coast just to the top of a hill 65 meters in vertical height, a person on a bicycle must have a speed at the bottom of approzimately?

  • Physical Science -

    iyi

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