What is the ratio of the intensities of two sounds with intensity levels of 70 dB and 40 dB?
A) 10:1
B) 100:1
C) 1000:1
D) 10,000:1
C
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The energy attributed to an object by virtue of its motion is known as ________
A) radiative energy B) kinetic energy C) potential energy D) mass-energy
What organic compound is represented by a hexagon with a circle inside?
a. Cyclohexane b. Cycloheptane c. Benzene d. Ethanol e. Methane
This photograph shows a small portion of the Sun's photosphere. What is going on in the bright regions (such as the bright region indicated by the arrow)?
A) Hot gas is rising up from the solar interior. B) Cool gas is falling back down into the solar interior. C) The bright spots are regions of unusually intense magnetic fields. D) The bright spots are what we call sunspots.
On a TV screen, red, green, and blue spots of light produce a full spectrum of colors. What spots are activated to produce yellow? Red? Magenta? White?
What will be an ideal response?