As the temperature of a body increases,
a. the body gets brighter
b. the color of the body shifts from red to white
c. the wavelength of the most intense light decreases
d. the frequency of the most intense light increases
e. all the above
E
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Which of these is NOT typical of a condensing protostar?
A) magnetic fields producing polar flows B) dusty disks around their equators C) Herbig-Haro objects projecting a light year out in space D) fusion of helium into carbon in their cores E) more infrared than visible light given off from the cocoon of dust around the star
Determine a relationship for the volume element in spherical coordinates.
What will be an ideal response?
The speed of water in a stream is affected by
A) hydraulic gradient, recharge, and channel geometry. B) gradient, discharge, and channel geometry. C) high gradient, laminar flow, and erosion. D) gradient, turbulence, and friction.
An organ pipe is open at one end and closed at the other. The frequency of the third mode is 300 Hz higher than the frequency of the second mode. If the speed of sound is 345 m/s, then what is the length of the organ pipe?
A. 50.3 cm B. 57.5 cm C. 64.5 cm D. 66.7 cm E. 70.5 cm