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WARRIOR [948]
1 year ago
15

If we transmitted radio signals to mercury when it was closest to earth and waited to hear the radar echo, how long would we wai

t?
Geography
1 answer:
Verizon [17]1 year ago
3 0

If we transmitted radio signals to mercury when it was closest to earth and waited to hear the radar echo, we have to wait 8.55 minutes.

Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as 300 gigahertz (GHz) to as low as 30 hertz (Hz). ... Naturally occurring radio waves are emitted by lightning and astronomical objects.

Radio waves are a type of electromagnetic radiation best-known for their use in communication technologies, such as television, mobile phones and radios. These devices receive radio waves and convert them to mechanical vibrations in the speaker to create sound waves.

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Which number on this map represents Mesopotamia?<br><br> A. 15<br> B. 14<br> C. 26<br> D. 2
Paul [167]
The answer is 14 because Mesopotamia means between two Rivers and 14 is the one between two rivers
4 0
3 years ago
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How much oil comes from Kuwait? What other countries provide oil?
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Oil reserves in Kuwait make up 8% of the oil reserves in the world. Kuwait is OPEC's third largest oil producer and claims to hold approximately 104 billion barrels (16.5×109 m3).
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3 years ago
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Which expressions can be used to find the coordinates of the midpoint of PQ with endpoints P(3, –1) and Q(–7, –6)? Select THREE
SVETLANKA909090 [29]

A line segment is a straight line with finite length, and thus, have to endpoints(points on either end). The correct options are 2, 3, and 5.

<h3>What are the coordinates of the midpoint of the line segment AB?</h3>

A line segment is a straight line with finite length, and thus, have to endpoints(points on either end).

Suppose we've two endpoints of a line segment as A(p,q), and B(m,n), Then let the midpoint be M(x,y) on that line segment. Then, its coordinates are:

x = \dfrac{p+m}{2}

and

y = \dfrac{q+n}{2}

The midpoint of the points P(3, –1) and Q(–7, –6) is,

x = (-7+3)/2 = -4/2 = -2

y = (-6-1)/2 = -7/2 = -3.5

Now, if we look at the options, the third option will give as the value of the x-coordinate as,

[(1/2)(-7-3)] + 3

= [(1/2)(-10)] + 3

= -5 + 3

= -2

This is the actual coordinate of the midpoint, therefore, this option is correct.

Similarly, the option two expresses the y-coordinate of the midpoint,

(-1 - 6)/2 = -3.5

Also, option five correctly depicts the value of y-coordinate,

-(5/2)-1 = -2.5 - 1 = -3.5

Hence, the correct options are 2, 3, and 5.

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5 0
2 years ago
What is the time at hundred degree east when it is 2:00 p.m. at 90 degree east​
Virty [35]

Answer:

3:oo

Explanation:

6 0
3 years ago
Si a un número se le adiciona 13, el resultado es 25​
puteri [66]

Answer: 12

12 +13 =25

Explanation:

5 0
3 years ago
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