Light travels 300,000 km/s. Many communications satellites are in geosynchronous orbit at about 36,000 km above the earth's surface
If you talk to your friend on the other side of the world via a geosynchronous satellite using Skype or your phone, what is the minimum time delay there will be between you and your friend in your conversation?
A) .48 seconds B) 8.3 seconds C) .12 seconds D) .24 seconds
D
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Shifting cells of subtropical high pressure contribute to the dry-summer conditions in the Mediterranean dry-summer climates
Indicate whether the statement is true or false
What is considered to be the first form of telecommunications?
A) telephone B) telegraph C) cell phone D) radio E) television
Physical and chemical weathering processes typically occur along the ________ of a slope
A) angle of repose B) free face C) waning slope D) depositional surface E) debris slope
Soil cohesion is enhanced by the presence of
A) gravel and sand particles B) clay and silt particles C) subsurface water D) organic matter