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3 years ago

When asked to describe resistance you say, "It is an object's ability to

Physics

2 answers:

Vesnalui [34]3 years ago

8 0

Accept the flow of current and is measured in ohms

11111nata11111 [884]3 years ago

5 0

The correct answer to the question is - oppose the flow of current through substances.

EXPLANATION:

From Ohm's law, we know that current [ I ] flowing a wire is directly proportional to the potential difference [ V ] maintained across the two ends of the conductor at constant temperature and pressure.

Mathematically V ∝ I .

⇒ V = IR .

Here, R is the proportionality constant called resistance of the wire.

From above, we see that current flowing through a wire is inversely proportional to the resistance. It means that the current flow will be less with the increase of resistance of the wire.

Hence, resistance can be defined as the opposition to the flow of current in an electric wire.

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A rocket moves away from the surface of earth. As the distance r from the center of the earth the planet increases, what happens

Blizzard [7]

The force of gravity will decrease.
More the distance between the objects, less the force of gravity between them.
They are inversely related.
Hope this help :)

6 0

4 years ago

I need help with this too. (im not good at science or math)

mr_godi [17]

Answer:

i belive 1 m/s

Explanation:

dividing displacement from time it should be 1 cuz 5/5 is 1

please tell me if right!

6 0

3 years ago

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A 41-turn square coil of area 0.074 m2 and a 123-turn circular coil are both placed perpendicular to the same changing magnetic

vesna_86 [32]

Answer:

<h3>The area of second coil is ≅ 0.025 $m^{2}$ </h3>

Explanation:

Given :

No. of turns in the first coil $N_{1} = 41$

No. of turns in the second coil $N_{2} = 123$

Area of first coil $A_{1} = 0.074 m^{2}$

According to the law of electromagnetic induction,

Induced emf = $-N \frac{d \phi}{dt}$

Where $\phi =$ magnetic flux.

Since given in question emf of both coil is same so we compare above equation.

$-\frac{N_{1} d\phi _{1} }{dt_{1} } = -\frac{N_{2} d\phi _{2} }{dt_{2} }$

$\frac{N_{1} A_{1} dB_{1} }{dt_{1} } = \frac{N_{2} A_{2} dB_{2} }{dt_{2} }$

$A_{2} = \frac{N_{1} A_{1} }{N _{2} }$

$A_{2} = \frac{41 \times 0.074 }{123 }$

$A_{2} = 0.0246 = 0.025 m^{2}$

Therefore, the area of second coil is ≅ 0.025 $m^{2}$

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4 years ago

Plants take up carbon dioxide from the air and nutrients from the soil. This is an example of interactions between the

Aneli [31]

<span>The answer would be: b. biosphere, atmosphere, and geosphere

The biosphere is made by the ecological system so the plants should be biosphere. The carbon dioxide is taken by the plant from the air which was the atmosphere. The nutrient is taken by the plant from the soil which is the geosphere.</span>

3 0

4 years ago

What happens when warm air rises? (5 points) (will give brain)

Lina20 [59]

Answer:

movement creates a difference in air pressure.

as warm air rises up it creates a vaccum so due to that the pressure in that region decreases.

8 0

3 years ago

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