All categories

3 years ago

In what ways are sound waves and electromagnetic waves similar? In what ways are they different?

1 answer:

3 0

Electromagnetic waves are usually transverse waves whilst sound wave are longitudinal waves. Furthermore, electromagnetic waves do not require a medium to travel in unlike sound waves which needs solid, liquid or gas mediums.

You might be interested in

Select the correct answer.

chubhunter [2.5K]

I believe it’s self-referent encoding

3 0

2 years ago

Are materials that dissolve in water hydrophobic or hydrophilic

stira [4]

Answer:

hydrophilic

Explanation:

hydrophobic means it hates water so a hydrophobic material would separate from the water and just sit there (an example of this is oil)

4 0

3 years ago

Read 2 more answers

A trip is taken that passes through the following points in order

MaRussiya [10]

Answer:

40.0 m

...............

3 0

3 years ago

Four identical particles of mass 0.980 kg each are placed at the vertices of a 4.14 m x 4.14 m square and held there by four mas

Zielflug [23.3K]

Answer:

a) The rotational inertia when it passes through the midpoints of opposite sides and lies in the plane of the square is 16.8 kg m²

b) I = 50.39 kg m²

c) I = 16.8 kg m²

Explanation:

a) Given data:

m = 0.98 kg

a = 4.14 * 4.14

The moment of inertia is:

$I=mr^{2} \\r=\frac{a}{2} \\I=m(a/2)^{2} \\I=\frac{ma^{2} }{4}$

For 4 particles:

$I=4(\frac{ma^{2} }{4} )=ma^{2} =0.98*(4.14)^{2} =16.8kgm^{2}$

b) Distance from top left mass = x = a/2

Distance from bottom left mass = x = a/2

Distance from top right mass = x = √5 (a/2)

The total moment of inertia is:

$I=m(\frac{a}{2} )^{2} +m(\frac{a}{2} )^{2}+m(\frac{\sqrt{5a} }{2} )^{2}+m(\frac{\sqrt{5a} }{2} )^{2}=\frac{12ma^{2} }{4} =3ma^{2} =3*0.98*(4.14)^{2} =50.39kgm^{2}$

$I=2m(\frac{m}{\sqrt{2} } )^{2} =ma^{2} =0.98*(4.14)^{2} =16.8kgm^{2}$

8 0

2 years ago

What is the definition of Rock Strata and Law of Original Horizontality?

timurjin [86]

It's called the Principle of Original Horizontality
 it just means what it sounds like: that all rock layers were originally horizontal.
Of course, it only applies to sedimentary rocks.
Recall that sedimentary rock is composed of sediments, which are deposited and compacted in one place over time.

3 0

3 years ago