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Angelina_Jolie [31]
3 years ago
12

Is it true or false that all electromagnetic waves travel at the same speed in a vacuum?

Physics
2 answers:
stira [4]3 years ago
6 0
Yes they do 
<span>Normally the speed is 186,282 miles per second
and all of the electromagnetic waves travels at this speed so they all travel at the same speed.
Hope this helps!

</span>
Nady [450]3 years ago
5 0
Truer words were never spoken.

The "speed of light" is also the speed of radio, the speed of microwaves,
the speed of heat, the speed of X-rays, etc.
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Suppose a 2662 kg giant seal is placed on a scale and produces a 20.0 cm compres- sion. If the seal and spring system are set in
Yuki888 [10]

Answer:

  0.8976 seconds

Explanation:

The period of oscillation for the simple harmonic motion can be found using the formula ...

  T = 2π√(d/g)

where d is the displacement of the spring due to the attached weight, and g is the acceleration due to gravity.

__

For d = 0.20 meters, the period is ...

  T = 2π√(0.20/9.8) ≈ 0.8976 . . . . seconds

_____

<em>Additional comment</em>

The formula for the oscillator period is usually seen as ...

  T = 2π√(m/k)

where m is the mass in the system and k is the spring constant. The value of the spring constant is calculated from ...

  k = mg/d

Using that in the formula, we find it simplifies to ...

  T=2\pi\sqrt{\dfrac{m}{k}}=2\pi\sqrt{\dfrac{m}{\left(\dfrac{mg}{d}\right)}}=2\pi\sqrt{\dfrac{d}{g}}

5 0
2 years ago
To understand the nature of electric current and the conditions under which it exists.Electric current is defined as the motion
Katarina [22]

Answer:

The metallic conductors

Explanation:

The metallic conductors has more free electrons that are movable, thus they conduct electricity better.

6 0
3 years ago
A woman pulls on a 6.00-kg crate, which in turn is connected to a 4.00-kg
djverab [1.8K]

Answer:

B. is subject to a smaller net force but same acceleration.

Explanation:

F = m*a

So because our force applied is constant from the women pulling on the rope which means the acceleration is the same on both the 4kg create and the 6kg create. The only thing that changes here is the mass of the creates, so there is more tension force between the women and the 6kg create then there is between the 4kg create and the 6kg. It takes less force to move the 4kg create therefore the tension force is less between the two creates.

7 0
3 years ago
Read 2 more answers
What is the velocity of sound in air and vacuum​
guapka [62]

Answer:

approximately 2.99 × 10⁸ m/s

8 0
3 years ago
Read 2 more answers
The fastest possible rate of rotation of a planet is that for which the gravitational force on material at the equator just bare
Brums [2.3K]

Answer:

6862.96871 seconds

Explanation:

M = Mass of Planet

G = Gravitational constant

r = Radius

\rho = Density

T = Rotation period

In this system the gravitational force will balance the centripetal force

G\frac{Mm}{r^2}=mr\omega^2

\omega=\frac{2\pi}{T}.

M=\rho v\\\Rightarrow M=\rho \frac{4}{3}\pi r^3

\\\Rightarrow G\frac{Mm}{r^2}=mr\left(\frac{2\pi}{T}\right)^2\\\Rightarrow \frac{G\rho \frac{4}{3}\pi r^3}{r^3}=\frac{4\pi^2}{T^2}\\\Rightarrow T=\sqrt{\frac{3\pi}{G\rho}}

Hence, proved

T=\sqrt{\frac{3\pi}{6.67\times 10^{-11}\times 3000}}\\\Rightarrow T=6862.96871\ s

The rotation period of the astronomical object is 6862.96871 seconds

7 0
3 years ago
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