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harina [27]
3 years ago
7

How many hydrogen atoms are there in the following compound: 4CHA (2 points)

Physics
2 answers:
pogonyaev3 years ago
6 0

Answer:

answer a, 4

Explanation:

when the 4 is before the compound it applies to the whole compound

nadezda [96]3 years ago
5 0

4 is correct

not just because of the compound number, but because the compound is in front of all three components.

for example:

CH∧4A= 4 hydrogen and 1 of the rest

4CHA= 4 of all three components

HOPE THIS HELPS!!!:)

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In the parallel spring system, the springs are positioned so that the 37 N weight stretches each spring equally. The spring cons
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Answer:

x = 5.29 m

Explanation:

given,

weight of stretch = 37 N

left-hand spring constant (k₁)= 2.7 N/cm

right hand spring constant(k₂)= 4.3 N/ cm

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F = F₁ + F₂

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3 years ago
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Yuliya22 [10]

Answer:

The distance between the ships is 87.84 km.

Explanation:

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Speed of second ship = 26 knots

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Using cosine rule

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Put the value into the formula

v=\sqrt{18^2+26^2-2\times18\times26\times\cos90}

v=\sqrt{18^2+26^2}

v=\sqrt{324+676}

v=10\sqrt{10}

We need to calculate the distance between the ships

d =v\times t

Put the value into the formula

d=10\sqrt{10}\times1.5\times1.852

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Hence, The distance between the ships is 87.84 km.

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