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3 years ago

15

During which process do particles of matter release energy?

1 answer:

BlackZzzverrR [31]3 years ago

7 0

freezing

During freezing, the temperature of a substance remains constant while the particles in the liquid form a crystalline solid. Because particles in a liquid have more energy than particles in a solid, energy is released during freezing. This energy is released into the surroundings.

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The density differences in the ocean water are due to different salt concentrations and differences in temperature. These differ

Svetradugi [14.3K]

A. Deep ocean currents

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4 years ago

a sound wave is determined to have a frequency of 1,000 hz and wavelength of 35cm. what is the speed of this wave?

natulia [17]

Answer:

The speed of the sound wave is 350 m $s^{-1}$

Explanation:

Given

Frequency of sound wave = 1000Hz = 1000 $s^{-1}$ (since 1 $s^{-1}$ = 1 Hertz (Hz))

Wavelength of sound wave = 35 cm

Speed of sound wave = ?

All waves have same the relation among frequency, sound and speed which is given by

v=fλ , where

v is the speed

f is frequency

λ is wavelength

Therefore, the speed of sound wave = 1000 $s^{-1}$ x 35 cm

= 35000 cm $s^{-1}$

= 350 m $s^{-1}$

Hence the speed of the sound wave is 350 m $s^{-1}$

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4 years ago

What velocity will it take to slingshot a planet with 9.8m/s gravity

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It depends on how close you get to it. Remember that its gravity decreases as you get farther from it.

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4 years ago

If a sound wave travels through air at a speed of 345 m/s, what would be the frequency of a 0.80 m long wave?

den301095 [7]

Answer:

D

Explanation:431.3

7 0

3 years ago

A ball is thrown with velocity of 10 m/s upwards. If the ball is caught 1 m above its initial position, what is the speed of the

White raven [17]

Answer:

v = 8.96 m/s

Explanation:

Initial speed of the ball, u = 10 m/s

It caught 1 meter above its initial position.

Acceleration due to gravity, $g=-9.8\ m/s^2$

We need to find the final speed of the ball when it is caught. Let is equal to v. To find the value of v, use third equation of motion as :

$v^2-u^2=2as$

$v^2=2as+u^2$

$v^2=2(-9.8)\times 1+(10)^2$

v = 8.96 m/s

So, the speed of the ball when it is caught is 8.96 m/s. Hence, this is the required solution.

6 0

3 years ago

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