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ZanzabumX [31]
3 years ago
10

Anna learned that every magnet has a north and a south end called poles. One day, while she is playing with magnets she notices

that when she puts the north end of a magnet near the south end of another magnet, they pull together. What can Anna conclude from her observation? A) Opposite poles of magnets repel. B) Opposite poles of magnets attract. C) The north pole picks up iron nails. D) Only the north pole has an attractive force.
Physics
2 answers:
kvv77 [185]3 years ago
6 0
North and south poles 
My name is Ann [436]3 years ago
4 0
Just from that one observation, choice-B
would be a reasonable conclusion.
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Heat rash is caused by chemical exposure Truth or false
Harrizon [31]

Answer:

This is false.

Explanation:

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2 years ago
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Which terrestrial ecosystem or life zone produces the highest net primary productivity per year? a. temperate forest b. Savanna
horsena [70]

a. hope this helps...

8 0
3 years ago
PLEASE HELP!
Anna [14]

Answer:

Explanation:

At constant pressure , work done by gas = P x ΔV where P is pressure and ΔV is change in volume

ΔV = 9.2 - 5.6 = 3.6 L

3.6 L = 3.6 x 10⁻³ m³

ΔV = 3.6 x 10⁻³ m³

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So work done

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3 years ago
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A planet has a surface temperature of 95.0 K and an atmospheric pressure of 1.60 atm. If 4.87 L of atmosphere has a mass of 28.6
mr Goodwill [35]

Answer:

M=28.88 gm/mol

Explanation:

Given that

T= 95 K

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V= 4.87 L

m = 28.6 g

R=0.08206L atm .mol .K

We know that gas equation for ideal gas

P V = n R T

P=Pressure , V=Volume ,n=Moles,T= Temperature ,R=gas constant

Now by putting the values

P V = n R T

1.6 x 4.87  = n x 0.08206 x 95

n=0.99 moles

We know that number of moles given as

n=\dfrac{m}{M}

M=Molar mass

n=\dfrac{m}{M}

0.99=\dfrac{28.6}{M}

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3 0
3 years ago
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andreyandreev [35.5K]

Answer:

b

Explanation:

it melts yes but it's still water [same element] so there fore it's a physical change

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3 years ago
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