Here are the answers to each question based on the information provided:
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Which statement about the effect of temperature on the speed of sound is correct?
- As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.
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For a wave with a wavelength of 530 nm, traveling at 2.25 × 10^8 m/s through water, someone claims that the frequency is 4.2 × 10^6 Hz. What can you say about this claim?
- The claim is false, the frequency is 4.2 × 10^14 Hz.
- (To find the frequency \( f \) you can use the formula \( v = f \lambda \), where \( v \) is the speed of sound and \( \lambda \) is the wavelength. Converting 530 nm to meters gives 530 × 10^-9 m. Thus, \( f = \frac{v}{\lambda} = \frac{2.25 × 10^8 \text{ m/s}}{530 × 10^{-9} \text{ m}} \approx 4.25 × 10^{14} \text{ Hz} \)).
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A seismologist who studies earthquakes sees that a seismic wave that traveled 500 km through Earth changed speeds multiple times. What conclusion can be drawn from this observation?
- As the wave passed through less dense material, the speed of the wave increased.
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A student explains that the behavior of EM radiation is wave-like. Which explanation correctly evaluates the wave-like properties of EM radiation?
- EM radiation has a well-defined frequency.
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Which observation is evidence that electromagnetic radiation (EMR) has particle-like properties?
- EMR with energy above a certain value can eject electrons out of a metal.
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Which statement about the double-slit experiment is true?
- The double-slit experiment provides evidence that electromagnetic radiation has both wave-like and particle-like properties.
Feel free to ask if you need further explanations or additional questions!