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lions [1.4K]
3 years ago
9

Both local and global winds are caused by what?

Physics
1 answer:
nikklg [1K]3 years ago
3 0

Answer:

Uneven heating of earth

Explanation:

Uneven heating of earth's surface, which sets convection currents in motion

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How far can a person travel in 19 minutes, walking at a speed of 5.0 km/h ?​
anyanavicka [17]

Answer:

5.0 km/h = 5.0 km/60min

speed = distance/time

distance = speed x time = 5.0km/60min x 19min = 1.6km

Explanation:

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3 years ago
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How might a tracer be used to diagnose a digestive problem?
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The radioactive tracer (radiopharmaceuticals) is used to assess bodily function and diagnosing and treating the disease.  It is made up of carrier molecules bondeed tightly to radioactive atom. Some interact with specific protein or sugar in the body of the person. Radioactive tracer can be administered through intravenous injection, inhalation, oral ingestion, or direct injection into an organ.
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4 years ago
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valkas [14]

Answer:

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____ developed the first model of the atom that showed the structure of the inside of an atom. A. Dalton B. Bohr C. Rutherford D
Elan Coil [88]

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D. Thomson

Explanation:

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6 0
4 years ago
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
seraphim [82]

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.

The area at the well head is

A = \pi r_w^2 = \pi (0.509/2)^2 = 0.203 m^2

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

So the diameter is twice the radius = 0.38*2 = 0.754m

6 0
3 years ago
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