Index of Refraction: Red light with a wavelength of 650 nm travels from air into a liquid with an index of 1.33. What are the frequency and wavelength of the light in the liquid? (c = 3.0 × 108 m/s)
What will be an ideal response?
4.61 × 1014 Hz, 489 nm
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In stellar astronomy, _____ states that the weight on each layer of a star is balanced by the pressure in that layer
A) the law of conservation of mass B) the law of conservation of energy C) the law of hydrostatic equilibrium D) the law of energy transport
Components: If a vector's components are all negative, then the magnitude of the vector is negative.
A. True B. False
The site from which an airplane takes off is the origin. The x axis points east; the y axis points straight up. The position and velocity vectors of the plane at a later time are given by
?
and 
m/s.
?
The plane is most likely
A. just touching down. B. in level flight in the air. C. ascending. D. descending. E. taking off.
You may have heard it said that all objects, even ones at the temperature of our bodies, are continually emitting electromagnetic radiation. Is this true?
A) Yes, and the radiation referred to results from the trace amounts of radioactive material that have accumulated in our bodies from the food we eat. B) Yes, and the radiation from our bodies is mostly in the infrared region of the spectrum, and hence not detected by our eyes. C) Yes, and this radiation is mostly in the form of radio waves, which is a common source of static often heard on an AM radio. D) No, this is not true. If a person were emitting electromagnetic radiation, he could be seen glowing in the dark, and this is obviously not the case for most people.