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Free_Kalibri [48]
3 years ago
9

In 1947 Thor Heyerdahl sailed a simple raft from Peru to Polynesia, following the ocean currents for more than 6,000 kilometers.

Which statement accurately describes what Heyerdahl proved by this voyage? a. Ancient Peru was settled by people from Polynesia. b. People from ancient Peru were the first settlers of Polynesia. c. It would have been possible for people from ancient Peru to reach Polynesia by following ocean currents. d. Polynesia was settled accidentally when rafts from Peru were carried out by ocean currents.
Physics
2 answers:
GenaCL600 [577]3 years ago
7 0
The correct answer of the given question above would be option C. In 1947 Thor Heyerdahl sailed a simple raft from Peru to Polynesia, following the ocean currents for more than 6,000 kilometers.<span> This statement accurately describes what Heyerdahl proved by this voyage. It would have been possible for people from ancient Peru to reach Polynesia by following ocean currents. </span>
cluponka [151]3 years ago
5 0

The answer is C good sir.

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A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead, the pipe's diameter is 50.9 c
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Answer:

Flow rate 2.34 m3/s

Diameter 0.754 m

Explanation:

Assuming steady flow, the volume flow rate along the pipe will always be constant, and equals to the product of flow speed and cross-section area.

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So the volume flow rate along the pipe is

\dot{V} = Av = 0.203 * 11.5 = 2.34 m^3/s

We can use the similar logic to find the cross-section area at the refinery

A_r = \dot{V}/v_r = 2.34 / 5.25 = 0.446 m^2

The radius of the pipe at the refinery is:

A_r = \pi r^2

r^2 =A_r/\pi = 0.446/\pi = 0.141

r = \sqrt{0.141} = 0.377m

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3 years ago
A change in the gravitational force acting on an object will affect the object
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Explanation:

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Hence, final charge on block A will be calculated as follows.

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Therefore, final charge on the block A is 4.35 nC.

(b)  As it is given that the positive charge is coming on block A . This means that movement of electrons will be from A to B.

Thus, we can conclude that while the blocks were in contact with each other then electrons will flow from A to B.

6 0
3 years ago
Read 2 more answers
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