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Karma Krueger
Physics
A college student holds the back of his hand near an iron to see if it is hot. Heat is transferred to his hand by ...
A Conduction
B Convection
C Radiation
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Iyana
Physics
Is our cosmic horizon the same as that of being in another galaxy?
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Draven Patel
Physics
How does quantum theory explain the working of a photocell?
A. Each light wave with a certain minimum energy releases an electron from an atom.
B. Each photon of light with energy below a certain value releases an electron from an atom.
C. Each light wave with energy below a certain value releases an electron from an atom.
D. Each photon of light with a certain minimum energy releases an electron from an atom.
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Ray May
Physics
A projectile is shot upward at a 60 degree angle with the ground at 200m/s how far has the projectile horizantally gone at the end
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Ronin Choi
Physics
You observe two stars in the sky and measure their angular distance as 60 degrees. How many arc seconds is this angular distance?
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Violet Lucas
Physics
Hiroto needs to record the volume of liquid in a graduated cylinder. He holds the graduated cylinder up at eye level, but it is slightly tilted. Hiroto records the volume as 32 mL. The actual volume is 30 mL. What type of error did Hiroto make? What will be the effect of this error?
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Lailah Boyer
Physics
Two students ride in cart opposite to one another in a spinning Ferris wheel
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Kailyn Vaughan
Physics
Why do animals that are least specialized have a better chance at survival?
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Lyric
Physics
What is the most likely evidence of an energy transformation taking place when a wire that is twisted and turned breaks?
A:Reddish glow is emitted as kinetic energy is transformed into thermal energy
B: Reddish glow is emitted as kinetic energy is transformed into electrical energy
C: Broken end of the wire turns hot as kinetic energy is transformed into thermal energy
D: Broken end of the wire turns hot as kinetic energy is transformed into electrical energy
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Kevin West
Physics
Whats a observation?
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Ramon Gay
Physics
If a hockey player starts from rest and accelerates at a rate of 2.1 m/s2, how long does it take him to skate 30 m?
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Rene Dunn
Physics
Jeff is part of a trekking team. As he climbs a hill, he drops his water bottle, which has a mass of 0.25 kilograms.
The bottle slides down the hill and is moving at a velocity of 14 meters/second the instant it hits the ground. The vertical height from where Jeff dropped the bottle is __?__ meters. Ignore friction, and use, PE = m * g * h, and g = 9.8 m/s2.
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Gibbs
Physics
What factors affect the speed of a wave?
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Ronnie Singh
Physics
The light from Star 1 reaches Star 3 in 138 years and Star 2 in 63 years. Which of these conclusions about the stars is correct?
A. The distance between Star 2 and Star 3 is 75 light years.
B. The distance between Star 2 and Star 3 is 201 light years.
C. Star 2 is 138 miles away from Star 3.
D. Star 2 is 63 kilometers away from Star 3.
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Jaydin
Physics
What is the period name of gold
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