All categories

3 years ago

Particles are squeezed together during rarefactions. True or False

Physics

2 answers:

Sloan [31]3 years ago

6 0

The answer would be false :)

Minchanka [31]3 years ago

5 0

Answer: The given statement is false.

Explanation:

A region is which particles of a gas or air are far apart from each other is known as rarefaction.

Basically, rarefaction is the opposite of compression. Density of a substance is less in rarefaction as there are large gaps between particles as they tend to spread out more. As a result, there will be decrease in mass of the substance.

Thus, we can conclude that the statement particles are squeezed together during rarefactions, is false.

You might be interested in

The astronomer who was imprisoned by the church for announcing his scientific discoveries was Brahe Galileo Aristotle Copernicus

tekilochka [14]

Answer:

galileo

Explanation:

4 0

3 years ago

Read 2 more answers

Sound can travel through a medium, but it does not require a medium. a. True. b. False

attashe74 [19]

That's false. No medium = no sound.

7 0

3 years ago

If the Sun suddenly went dark, we would not know it until its light stopped arriving on Earth. How long would that be, in second

Gre4nikov [31]

Answer: 500 s

Explanation:

Speed $v$ is defined as a relation between the distance $d$ and time $t$ :

$v=\frac{d}{t}$

Where:

$v=3(10)^{8}m/s$ is the speed of light in vacuum

$d=1.5(10)^{11}m$ is the distance between the Earth and Sun

$t$ is the time it takes to the light to travel the distance $d$

Isolating $t$ :

$t=\frac{d}{v}$

$t=\frac{1.5(10)^{11}m}{3(10)^{8}m/s}$

Finally:

$t=500 s$

5 0

3 years ago

How high would you have to lift a 1000kg car to give it a potential energy of:

Elza [17]

Given parameters:

Mass of the car = 1000kg

Unknown:

Height = ?

To find the heights for the different amount potential energy given, we need to understand what potential energy is.

Potential energy is the energy at rest due to the position of a body.

It is mathematically expressed as:

P.E = mgh

m is the mass

g is the acceleration due to gravity = 9.8m/s²

h is the height of the car

Now the unknown is h, height and we make it the subject of the expression to make for easy calculation.

h = $\frac{P.E }{mg}$

For 2.0 x 10³ J;

h = $\frac{2000}{1000 x 9.8}$ = 0.204m

For 2.0 x 10⁵ J;

h = $\frac{200000}{9.8 x 1000}$ = 20.4m

For 1.0kJ = 1 x 10³J;

h = $\frac{1000}{9.8 x 1000}$ = 0.102m

5 0

3 years ago

Why are peer reviews important?

riadik2000 [5.3K]

Peer review is important because it is used by scientists to decided which results should be published in a scientific journal

8 0

3 years ago

Read 2 more answers