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Eddi Din [679]
4 years ago
10

An electromagnetic wave is produced by charged particles vibrating at a rate of 3.9 x 10^8 vibrations per second. the electromag

netic wave is classified as
Physics
2 answers:
77julia77 [94]4 years ago
7 0

According to sources, the most probable answer to this query is visible light. The speed of light is approximately 3 x 10^8 m/s. This is the part of the electromagnetic spectrum that we can see and perceive. Thank you for your question. Please don't hesitate to ask in Brainly your queries.
tresset_1 [31]4 years ago
7 0

Answer:

The given electromagnetic wave is a radio wave.

Explanation:

Rate of vibration of the particle or frequency of the electromagnetic wave:

frequency = \nu=3.9\times 10^8 vibrations per second

Wave length of the electromagnetic wave will be given by:

\lambda =\frac{c}{\nu}

\lambda =\frac{3\times 10^8 m/s}{3.9\times 10^8}=0.769 m

The wavelength of of the electromagnetic wave is lying in the range of 1 mm to 100 km that is radio wave.

Hence ,the given electromagnetic wave is a radio wave.

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A hoodlum throws a stone vertically downward with an initial speed v0 from the roof of a building, a height h above the ground.
Vaselesa [24]
V2=u2+2as
v2=144+600
v2=744
v=√744
6 0
4 years ago
Could a mixture be made up of only elements and no compounds. if so explain
Irina18 [472]

I racked my brain for almost 10 minutes, until suddenly,
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The other 0.036 percent is mainly Neon, Helium, Krypton,
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Then there are Carbon Dioxide and water vapor.
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7 0
3 years ago
Can laws in science change
lorasvet [3.4K]
Laws reflect scientific knowledge that experiments have repeatedly verified (and never falsified). Their accuracy does not change when new theories are worked out, but rather the scope of application, since the equation (if any) representing the law does not change.
6 0
3 years ago
Read 2 more answers
Darren drives to school in rush hour traffic and averages 28 mph. He returns home in mid-afternoon when there is less traffic an
Gala2k [10]

Answer:

distance between school and home is 21 miles

Explanation:

given data

in rush hour speed  s1 = 28 mph

less traffic speed s2 = 42 mph

time t = 1 hr 15 min = 1.25 hr

to find out

distance  d

solution

we consider here distance home to school is d and t1 time to reach at school

we get here distance equation when we go home to school that is

distance = 28 × t1    .......................1

and when we go school to home distance will be

distance = 42 × ( t - t1 )

distance = 42 × ( 1.25 - t1 )     ...................2

so from equation 1 and 2

28 × t1 = 42 × ( 1.25 - t1 )

t1 = 0.75

so

from equation 1

distance = 28 × t1

distance = 28 × 0.75

distance = 21 miles

4 0
3 years ago
A closed system contains 30g of gas. How much heat(in joules) is added to or rejected by the system to produce 5000 N-m of work
finlep [7]

Answer : The heat rejected by the system is 1000 J

Explanation :

As per first law of thermodynamic,

q=\Delta U+w

where,

\Delta U = internal energy  of the system

q = heat  added or rejected by the system

w = work done of the system

First we have to determine the internal energy for 30 grams of gas.

As, 1 gram of gas has internal energy = 200 J

So, 30 grams of gas has internal energy = 200 × 30 = 6000 J

Now we have to determine the heat of the system.

q=\Delta U+w

\Delta  = -6000 J

w = 5000 N.m = 5000 J

Now put all the given values in the above formula, we get:

q=-6000J+5000J

q=-1000J

The negative sign indicate that the heat rejected by the system.

Hence, the heat rejected by the system is 1000 J

8 0
3 years ago
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