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Snowcat [4.5K]
3 years ago
7

Controlling the amount of current in a circuit by opposing the flow of charge

Physics
2 answers:
Vera_Pavlovna [14]3 years ago
8 0

Answer:

Resistor

Explanation:

Resistor provides resistance to the flow of electric current in a circuit.

It controls the amount of current in a circuit by acting as a barrier to the flow of electric charges

IrinaVladis [17]3 years ago
4 0

Answer:

Like the other person said, the answer is resistor.

Explanation:

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Which ONE of the following pairs of physical quantities consists of one scalar and one vector quantity?
lyudmila [28]

Answer:

speed and acceleration

Explanation:

speed is a scalar quantity

acceleration is a vector quantity

7 0
2 years ago
At its natural resting length, a muscle is close to its optimallength for producing force. As the muscle contracts, the maximumf
lesantik [10]

Answer:

Figure E is the correct representation of the first part of the motion. When in a hanging position from the chin-up bar, the bicep muscles are stretched beyond their normal length already. So at this point they are at the peak of their capacity and you are at rest (this corresponds to the velocity v = 0 at t = 0). On contracting the bicep muscles and pulling your whole body up, you begin to gain speed and v increases. This increase in velocity is exponential. Soon the bicep muscles contract up to 80% their normal length reducing the force they can produce to keep you rising up to zero. The velocity change happens because the body is accelerating and the muscles can still supply a net force to lift you up. The acceleration is present because of this net force. The moment this force reduces to zero, the acceleration too reduces to zero. (From Newton's second law of motion). This reduction in acceleration is responsible for the reduction of the curvature of the v curve in figure E above. The point where the velocity becomes horizontal corresponds to the point where the muscles reach their maximum contraction unit and can supply no more net force and as a result no acceleration. This further results inba constant velocity which is the flat nature of the curve seen in diagram E.

Thank you for reading.

Explanation:

5 0
3 years ago
A sample of ice at 0°C has a mass of 23 g and a volume of 25 cm^3. Why does ice float on water? The density of water is 1 g.
vlabodo [156]

Answer: ice float in water due to density differences. Water has a higher density than ice.less dense object in liquid with high density

Explanation: from density formulae.

D=M/V

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D=0.92g/cm^3

7 0
3 years ago
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3 years ago
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8 0
3 years ago
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