What is the frequency of a wave with a wavelength of 6.40 x 104 meters? ?   1.87 x 10−6  hz  2.13 x 10−4  hz  4.69 x 103  hz  1.92 x 1013  hz

4.69 x 103 Hz

Explanation:

I took the test and got it right :)

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Solution:- Wavelength is given and we are asked to calculate the frequency. The equation that correlates frequency with wavelength is:

where, is the symbol for frequency, c is the symbol for speed of light and is the symbol for wavelength.

Speed of light is and the wavelength is given as .

Let's plug in the values in the equation and so the calculations to calculate the frequency:

(since, )

So, the frequency of the wave is .

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.

a polar bond is formed when electrons are shared unevenly between atoms