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3 years ago

4. All electromagnetic radiation moves at the speed of , which is _ m/s.

Physics

1 answer:

VARVARA [1.3K]3 years ago

7 0

Answer:

All electromagnetic radiation, regardless of its wavelength, travels at what is called the "speed of light". In a vacuum, it is measured as 299,792,458 meters per second. 3.0 x 108 meters per second.

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An inductor with an inductance of .5 henrys (H) is to be connected to a 60 Hz circuit. What will the inductive reactance (X L) b

Anika [276]

Answer:

1885.2 ohms

Explanation:

Step one:

given data

L=5H

f=60Hz

Required

The inductive reactance of the inductor

Step two:

Applying the expression

XL= 2πfL

substitute

XL=2*3.142*60*5

XL=1885.2 ohms

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3 years ago

Light of wavelength 520 nm is used to illuminate normally two glass plates 21.1 cm in length that touch at one end and are separ

Oksi-84 [34.3K]

Answer:

The number is $Z = 216 \ fringes$

Explanation:

From the question we are told that

The wavelength is $\lambda = 520 \ nm = 520 *10^{-9} \ m$

The length of the glass plates is $y = 21.1cm = 0.211 \ m$

The distance between the plates (radius of wire ) = $d = 0.028 mm = 2.8 *10^{-5} \ m$

Generally the condition for constructive interference in a film is mathematically represented as

$2 * t = [m + \frac{1}{2} ]\lambda$

Where t is the thickness of the separation between the glass i.e

t = 0 at the edge where the glasses are touching each other and

t = 2d at the edge where the glasses are separated by the wire

m is the order of the fringe it starts from 0, 1 , 2 ...

$2 * 2 * d = [m + \frac{1}{2} ] 520 *10^{-9}$

=> $2 * 2 * (2.8 *10^{-5}) = [m + \frac{1}{2} ] 520 *10^{-9}$

$m = 215$

given that we start counting m from zero

it means that the number of bright fringes that would appear is

$Z = m + 1$

=> $Z = 215 +1$

=> $Z = 216 \ fringes$

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3 years ago

If constants aren't given in an experiment, what can be constant in the experiment?

mario62 [17]

Answer:

Anything in an experiment that remains unchanged.

Explanation:

An example could be the temperature of the laboratory room. If there is something that has an effect on an experiment that is not variable, it is a constant. Another constant could be, say, if you were doing calculations with the same amount and kind of fluid throughout the experiment, then that fluid would also be a constant.

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3 years ago

How would playing a game of soccer, baseball, or basketball be different if inertia didn’t exist?

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This would be a funny game.

Inertia, according to first Law of Newton, means that when you throw a ball it will continue moving unless a force acts over it.

Without inertia, the ball instead of continue moving, would stop as soon as it leaves your hand or foot. You had to stay pasted to the ball unitl it reaches the desired destiny for it continue moving.

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3 years ago

What did Max Planck propose to help explain observations of the energy released by a black body radiator?

Dimas [21]

Matter can absorb light only in certain specific amounts.

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3 years ago

Read 2 more answers

4. All electromagnetic radiation moves at the speed of ________________, which is _________________ m/s.

4. All electromagnetic radiation moves at the speed of , which is _ m/s.