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Svetllana [295]
2 years ago
15

What are the magnitude and direction of electric field at the center of square?

Physics
1 answer:
Kobotan [32]2 years ago
6 0

Answer:

hello the diagram related to this question is missing attached below is the missing diagram

Answer :

The magnitude of the electric field = 4KQ / L^2

direction = 45° east to south

Explanation:

The magnitude of the electric field = 4KQ / L^2

direction = 45° east to south

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Which wave has a wavelengh that is most likely seen as red light?
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Answer:

D.

Explanation:

Red light has wavelengths around 620 to 750 nm.

7 0
3 years ago
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A tissue sample at 275 K is submerged in 2 kg of liquid nitrogen at 70 K for cryopreservation. The final temperature of the nitr
kirill115 [55]

Answer:

The heat capacity of a sample is 37.7 J/K.

Explanation:

Given that,

Submerged temperature of tissue sample = 275 K

Mass of liquid nitrogen= 2 kg

Temperature = 70 K

Final temperature = 75 K

We need to calculate the heat

Using formula of heat

Q=mc(T_{f}-T_{i})

Put the value into the formula

Q=2\times1.039\times10^{3}\times(75-70)

Q=10390\ J

We need to calculate the heat capacity of a sample

Using formula of heat capacity

\Delta S=\dfrac{Q}{T}

Put the value into the formula

\Delta S=\dfrac{10390}{275}

\Delta S=37.7\ J/K

Hence, The heat capacity of a sample is 37.7 J/K.

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3 years ago
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Write atleast name of five devices which work under the principles of physics
Colt1911 [192]
You could say almost anything.
For example:
phones,
cars,
computers,
clocks,
hydraulics,
bicycles,
the hadron collider,
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3 0
3 years ago
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You are running to catch a train which is stationary on the tracks. The whistle is blowing, in preparation for the train’s depar
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Answer:

You would hear a loud trumpet sound that can be heard from a large distance.

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7 0
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What is true about the force between charges?
shusha [124]

Answer:

The statements A and D are true

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Explanation:

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We can see that Force F is inversely proportional to the distance r

Which means that when F increase, r decreases and when F decreases, r increases

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