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Yuliya22 [10]
3 years ago
5

A pair of opposite electric charges of equal magnitude is called a(n)

Physics
2 answers:
ladessa [460]3 years ago
8 0

A pair of opposite electric charges of equal magnitude is called a(n) A) Dipole

Kryger [21]3 years ago
6 0

Answer:

A) dipole.

Explanation:

As we know that when two equal and opposite charges are placed at some distance from each other then this combination of two equal and opposite charges are known as electric dipole.

Here electric dipole has dipole moment which is a vector quantity which is measured as the product of charge and distance between the two charges

it is given as

P = qd

here the direction of dipole moment is from negative charge to positive charge.

so correct answer is given as

A) dipole.

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Match each term with the appropriate definition.
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2 years ago
A 72.9-kg base runner begins his slide into second base when moving at a speed of 4.02 m/s. The coefficient of friction between
elena-14-01-66 [18.8K]

Answer:

-589.05 J

Explanation:

Using work-kinetic energy theorem, the work done by friction = kinetic energy change of the base runner

So, W = ΔK

W = 1/2m(v₁² - v₀²) where m = mass of base runner = 72.9 kg, v₀ = initial speed of base runner = 4.02 m/s and v₁ = final speed of base runner = 0 m/s(since he stops as he reaches home base)

So, substituting the values of the variables into the equation, we have

W = 1/2m(v₁² - v₀²)

W = 1/2 × 72.9 kg((0 m/s)² - (4.02 m/s)²)

W = 1/2 × 72.9 kg(0 m²/s² - 16.1604 m²/s²)

W = 1/2 × 72.9 kg(-16.1604 m²/s²)

W = 1/2 × (-1178.09316 kgm²/s²)

W = -589.04658 kgm²/s²

W = -589.047 J

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A 10 kg block is attached to a light cord that is wrapped around the pulley of an electric motor, as shown above. At what rate i
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Answer:

the work done by the motor is 531,45 Joules

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Using a sketch of the possible conditions, we need to find the distance that the block was moved, in order to find the work done by the electrical motor.

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