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# Physics

William Cain

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#### 1. An electromagnetic wave in a vacuum has a wavelength of 0.07 m. What is its frequency? (1 point) f = 3.0 • 108 m/s f = 4.3 • 109 Hz f = 3.0 • 109 Hz f = 4.3 • 108 m/s 2. Which of the following occurs as light travels farther from its source? (1 point) Far from the source, photons come together in a small area. The intensity of light increases as photons move away from the source. The source gives off less light as photons move away from it. Far from the source, photons spread over a larger area. 3. Infrared rays have a shorter wavelength than (1 point) ultraviolet rays. X-rays. radar waves. gamma rays. 4. In order of increasing light-transmitting capabilities of materials, which is the correct sequence? (1 point) transparentopaquetranslucent opaquetransparenttranslucent opaquetranslucenttransparent translucenttransparentopaque 5. Which of the following occurs as a light wave bends when it passes from one medium into another? (1 point) constructive interference refraction destructive interference reflection

Jennifer Patterson

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Megan Page

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Heather Maxwell

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Victoria Fowler

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Kristi Hammond

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Kristi Hammond

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Brandon Scott

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Carlton Burgess

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Heather Maxwell

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Daniel King

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Bethany Evans

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Theresa Perry

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#### A glob of sticky putty is thrown against a slightly open door so that it sticks on impact and gives the door a momentum of 1.4 kg m/s. A rubber ball with exactly the same mass and velocity as the sticky putty strikes the door and bounces back at its initial speed in the opposite direction. What impulse does it impart to the door? 2.8 kgm/s 1.4 kgm/s 0.70 kgm/s 0 kgm/s

Jeffrey Rodriguez

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Victoria Fowler

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Kristi Hammond

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Curtis Rhodes

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Curtis Rhodes

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Whitney Matthews

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Ronald Miller

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#### Which of the following is true about glass recycling? a. Recycling glass reduces the rate of deforestation. b. Recycling glass eliminates greenhouse gas emissions. c. Recycling glass is an energy-saving practice. d. Recycling glass has an incredibly short turn around time.

Jeffrey Rodriguez

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Zach Chandler

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Samantha Barber

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Bethany Evans

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Carlton Burgess

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Jeremy Wood

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Alexa Spicer

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Kaitlin Dean

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Jodi Brooks

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Nicholas Rivera

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Heather Maxwell

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#### Which coin paradox calls for the ability to assess when more force is needed and when it might be?

Jennifer Patterson

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Kevin Sutter

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Mindee Nelson

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Roger Moore

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Craig Stewart

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#### A mirror with a reflecting surface that caves inward is said to be

Caroline Campbell

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Brandon Scott

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Kristi Hammond

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#### Which one of the following is not an example of a combination reaction a. 2H2O(I)---> 2H2(g)+O2(g) b. 2K+CI2--->2KCI c. 2H2+O2--->2H2O d. 2Mg+O2--->2MgO

Jennifer Patterson

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Karen Wright

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Jodi Brooks

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Brandon Scott

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Eric Morgan

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Timothy Norman

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Deborah Edwards

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Ronald Miller

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Megan Page

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Ashley Howard

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