Answer:
Galileo Galilei was looking into a telescope and he realized we orbit around the sun and the moon orbits around us
Explanation:
Answer: The velocity is the wave traveling at before the transmitter converts it to a sound wave is 
Explanation:
Wavelength of the electromagnetic wave = 23,076 m
Frequency of the wave = 13,000 Hertz


The velocity is the wave traveling at before the transmitter converts it to a sound wave is 
Answer:
B. in both directions until the temperature is equal in the water and the air
Explanation:
When a warm body is in contact with a cool body , there is exchange of heat energy in both sides until there is attainment of equilibrium temperature . At this temperature both the body attains equal temperature . Initially rate of heat radiated by warm body is more than that from cool body , but after attainment of equilibrium , the rate becomes equal to each other . This is called dynamic equilibrium .
Hence option B is correct .
Answer:
Explanation:
8. Which process(es) of the water cycle—precipitation, evaporation, condensation, runoff, percolation or transpiration-might contribute to the addition of pollutants to rivers, lakes, and oceans? Why? Precipitation and runoff would be the most responsible processes.
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