2 years ago

PLEASE HURRY THIS IS URGENT

Physics

1 answer:

Irina-Kira [14]2 years ago

7 0

3. Rubbing Sticks together to create a fire.

5. Gravity.

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الملك - الإتاوات - المحاكم - المجلس الملكي - القانون الروماني

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Jack pushed and pushed, and finally moved the new refrigerator into the kitchen. What is the BEST explanation of what happened?

Anika [276]

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Explanation:

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An electric field of 2.09 kV/m and a magnetic field of 0.358 T act on a moving electron to produce no net force. If the fields a

My name is Ann [436]

Answer:

The velocity is $v = 5838 \ m/s$

Explanation:

From the question we are told that

The electric field is $E = 2.09 kV/m = 2.09 *10^{3} \ V/m$

The magnetic field is $B = 0.358 \ T$

Generally the force experienced by the electron due to the magnetic field is

$F_m = qvB$

Generally the force experienced by the electron due to the electric field is

$F_e = qE$

Since from the question the net force is zero then

$F_e = F_m$

=> $v = \frac{E}{B}$

Substituting values

$v = \frac{2.09*10^{3}}{0.358 }$

$v = 5838 \ m/s$

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A wave of frequency 500hz and wave length 50m is traveling into a medium, dertimine the speed of velocity of the wave. formula V

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Answer:

25000m/s

Explanation:

V=fd

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Suppose you look at a detailed spectrum of visible light from some object. How can you decide whether it is an emission line spe

statuscvo [17]

Answer:

By observing the color of lines in the spectrum.

Explanation:

There are two types of lines in the spectrum explained below:

i) Bright lines: Bright lines occurs on the spectrum when atoms emit photons. These bright lines show the emission line spectrum.

ii) Dark Lines: Dark lines occurs on the spectrum when atoms absorb photons. These black lines show the absorption line spectrum.

Hence, by observing the color of lines it is possible to identify emission line spectrum and absorption line spectrum.

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