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lilavasa [31]
3 years ago
10

What two forces can act on an object without touching it??

Physics
1 answer:
Colt1911 [192]3 years ago
3 0
Magnetism and gravity.

hope this helps you
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A main difference between asteroids and comets is that asteroids are mostly made of rock and comets are mostly made of metals ca
avanturin [10]

We can confirm that the difference between a comet and an asteroid lies in their compositions and physical characteristics <u>derived from those compositions</u>.

As stated in the question, the main difference between an asteroid and a comet is their compositions, meaning the materials from which they form.

Asteroids are rocky objects which a heavy metal composition, while comets tend to be made of dust, ice, and <em><u>some </u></em>rocky material. Some extra differences include:

  • Comets reflect a steady amount of light (because of their ice composition)
  • Asteroids will <em><u>reflect light at random intervals due to some metals that may be present on their surface</u></em>
  • Comets tend to have a tail made of water from the melting ice when reflecting sunlight.

Therefore, we can confirm that the main difference between asteroids and comets is their compositions, which lead to distinct physical characteristics.

To learn more visit:

brainly.com/question/1333558?referrer=searchResults

5 0
3 years ago
What is a substance
Ulleksa [173]

Well, if i am correct. a substance is:

a particular kind of matter with uniform properties

or...

the real physical matter of which a person or thing consists and which has a tangible, solid presence.

choose which ever you like better:)

4 0
3 years ago
Using a simple machine, the machine cannot increase the amount of _______ , but can increase the amount of ________ .
givi [52]

work but not energy

Explanation:

hdhhsnshshshgsnajsysvbskdk

4 0
4 years ago
Read 2 more answers
The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.724 W/m2. What is the maximum va
liq [111]

Answer:

The maximum value of the magnetic field in the wave is 7.79\times10^{-8}\ T.

Explanation:

Given that,

Average value of pointing vector = 0.724 W/m²

We need to calculate the magnetic field

Using formula of pointing vector

S=\dfrac{1}{\mu_{0}}(E\times B)

The average value of pointing vector

S=\dfrac{1}{2\mu_{0}}\times E_{0}B_{0}....(I)

We know that,

E_{0}=cB_{0}

Put the value of E_{0} in equation (II)

S=\dfrac{1}{2\mu_{0}}\times c(B_{0})^2

substitute the value in the formula

0.724=\dfrac{1}{2\times4\pi\times10^{-7}}\times3\times10^{8}\times (B_{0})^2B_{0}=\sqrt{\dfrac{0.724\times2\times4\pi\times10^{-7}}{3\times10^{8}}}B_{0}=7.79\times10^{-8}\ T

The maximum value of the magnetic field in the wave is 7.79\times10^{-8}\ T.

4 0
4 years ago
Object A moves toward Object B. Object B has twice the mass of Object A but is not moving. After the impact, the objects lock to
Alex73 [517]

Answer:

I mean its probably a magnet so look at the fraction of the initial Kinetic Energy of magnets

Explanation:

3 0
3 years ago
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