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3 years ago

15

When are children MOST likely to begin using words to express meaning? A. before 12 months B. between 12 and 18 months C. betwee

n 18 months and 2 years D. between 2 and 3 years

2 answers:

lubasha [3.4K]3 years ago

7 0

Answer:

B. Between 12 and 18 months

Explanation:

I hope this helped!

disa [49]3 years ago

7 0

Answer: B. Between 12 and 18 months

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A 9 kg box is placed on a 6 m tall shelf. What will be the kinetic energy of the box right before it hits the ground? (use g = 1

m_a_m_a [10]

Answer:

540 J

Explanation:

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A toy helium balloon is initially at a temperature of T = 24o C. Its initial volume is 0.0042 m3 (It is a 10 cm radius sphere).

Anettt [7]

Answer:

$T_{f} = 335.780\,K\,(62.630\,^{\textdegree}C)$

Explanation:

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$V$ - Volume, in m³.

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$T$ - Temperature, in K.

Since there is no changes in pressure or the quantity of moles, the following relationship between initial and final volumes and temperatures is built:

$\frac{V_{o}}{T_{o}} = \frac{V_{f}}{T_{f}}$

The final temperature is:

$T_{f} = \frac{V_{f}}{V_{o}}\cdot T_{o}$

$T_{f} = 1.13\cdot (297.15\,K)$

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4 years ago

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I think that the answer is A

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