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USPshnik [31]
3 years ago
12

When electromagnetic waves travel through a vacuum they do so with speeds that are

Physics
2 answers:
const2013 [10]3 years ago
8 0

Answer:

the same as the speed of light (3.0×10^8 m/s)

RoseWind [281]3 years ago
6 0
The same as the speed of light ( c = ~ 300 000 km/s)
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How are igneous rock formed ?Explain in brief.​
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Explanation:

Igneous rocks are formed by melting and cooling of magma originated from volcanic process.

when molten rock (rock liquefied by intense heat and pressure) cools to a solid state. Lava is molten rock flowing out of fissures or vents at volcanic centres (when cooled they form rocks such as basalt, rhyolite, or obsidian)

These rocks are strong, crystalline and dark in colour.

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3 years ago
Kitty Genovese was stabbed to death while neighbors looked on. Nobody went out to help and only later did someone call the polic
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Who is Kitty Genovese?!??!??!!?!!!???!

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3 years ago
5. a new type of hoverboard has been designed to levitate over a copper surface. the
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The magnetic field is responsible for levitating the hoverboard and rider as it traverses the half pipe.

<h3>What is a magnetic field?</h3>
  • The magnetic field is defined as the field the magnetic materials generate or when an electric charge moves in a field region that generates the magnetic field.
  • The surface is made up of from the copper and copper is conductor of electricity.
  • When an electrical charge moves, it generates a magnetic field. As with electrical current running via a wire, the spinning and orbiting of an atom's nucleus produces a magnetic field.
  • Thus, the magnetic field is responsible for levitating the hoverboard and rider as it traverses the half pipe.
<h3>What is the characteristics of Magnetic fields?</h3>
  • Magnetic field lines never cross one another.
  • They begin (from the north pole) and end (to the south pole) perpendicular to the surface of the magnet. Magnetic field lines also run through the magnet.
  • The magnetic field is denser at the poles and less dense as we move away from them.
  • A single magnetic pole does not exist. Magnetic poles are always found in pairs of opposing poles.

Learn more about the magnetic field here:

<u>brainly.com/question/23096032</u>

#SPJ4

7 0
2 years ago
An object's (mass or weight) will remain constant throughout the universe, but its (mass or weight) can change from planet to pl
krek1111 [17]

Answer: 1. An objects mass

2. But it’s weight

3. Strength of gravity increases

4 weight decreases

Explanation:

6 0
3 years ago
Read 2 more answers
The Starship Enterprise speeds past an asteroid at 0.920c. If an observer on the asteroid sees 10.0 seconds pass on her watch, h
lukranit [14]

Answer:

25.52 seconds

Explanation:

Speed of space ship = 0.92 c = v

c = Speed of light

Time observed from asteroid = Δt = 10 seconds

Time dilation

\Delta t'=\frac{\Delta t}{\sqrt{1-\frac {v^2}{c^2}}}\\\Rightarrow \Delta t'=\frac{10}{\sqrt{1-\frac {0.92^2c^2}{c^2}}}\\\Rightarrow \Delta t'=\frac{10}{\sqrt{1-0.92^2}}\\\Rightarrow \Delta t'=25.52\ s

∴ Time interval be if measured by an observer on the Enterprise would be 25.52 seconds

5 0
4 years ago
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