3 years ago

Why do waves move faster at higher temperatures and in a solid phase?

Chemistry

2 answers:

podryga [215]3 years ago

7 0

There is more energy and the particles are closer together.

Sholpan [36]3 years ago

5 0

As Temperature Rises
So does the energy
In fact its the opposite way around!
The more solid your voice is The more energy it has!
If you were to speak boldly the energy would be great and move fast causing the soundwaves to accelerate as well!

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If a 60-g object has a volume of 30 cm3, what is its density? 2 g/cm3 0.5 cm3/g 1800 g * cm3 none of the above

jasenka [17]

Answer : The density of an object is, $2g/cm^3$

Solution : Given,

Mass of an object = 60 g

Volume of an object = $30cm^3$

Formula used :

$\text{Density of an object}=\frac{\text{Mass of an object}}{\text{Volume of an object}}$

Now put all the given values in this formula, we get the density of an object.

$\text{Density of an object}=\frac{60g}{30cm^3}=2g/cm^3$

Therefore, the density of an object is, $2g/cm^3$

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2 years ago

Artemon [7]

Answer:

$9.8ms^{-2}$

Explanation:

using the equation :

$acceleration = \frac{final velocity - initial velocity}{timetaken} \\ a =\frac{v-u}{t}$

where v is 98m/s

u is 0m/s

t is 10seconds

$a=\frac{98m/s- 0m/s}{10} \\a=\frac{98}{10}\\ a=9.8m/s^{2}$

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2 years ago

Carl hits a baseball with a force of 8 N. The next batter, Stacy, hits it with 12 N of force. Which ball will accelerate faster?

Marrrta [24]

Answer:

Explanation:

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3 years ago

ANSWER FAST PLZ!!!!!!!!!

valina [46]

I think the answer is B

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2 years ago

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5. A 25 kg object travels a distance of 90 m in 30 s. Find the momentum

xz_007 [3.2K]

Answer:

★ v = d/t

★ v = 90/30

★ v =3

Acc to question

★ momentum = mass * velocity

★ m = 25×3

★ m = 75kgm/s

Hope it help

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3 years ago

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