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yanalaym [24]
3 years ago
13

Sort the phrases according to whether they belong in the category of permanent or temporary magnets

Physics
2 answers:
kolezko [41]3 years ago
8 0

Answer:

Permanent magnet:                    Temporary magnet:

Hard to demagnetize                  Easy to demagnetize

Hard                                             Soft

Bar magnet                                  Thumbtack

Anit [1.1K]3 years ago
5 0

Permanent magnet:

Hard to demagnetize

Hard

Bar magnet

Temporary magnet:

Easy to demagnetize

Soft

Thumbtack

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Explanation:
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An aluminum wire having a cross-sectional area equal to 3.90 10-6 m2 carries a current of 6.00 A. The density of aluminum is 2.7
stich3 [128]

Answer:

Vd = 1.597 ×10⁻⁴ m/s

Explanation:

Given: A = 3.90×10⁻⁶ m², I = 6.00 A, ρ = 2.70 g/cm³

To find:

Drift Velocity Vd=?

Solution:

the formula is Vd = I/nqA         (n is the number of charge per unit volume)

n = No. of electron in a mole ( Avogadro's No.) / Volume

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V = 27 g / 2.70 g/cm³ = 10 cm³ = 1 × 10 ⁻⁵ m³

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n= 6.02 × 10 ²⁸

Now

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Vd = 1.597 ×10⁻⁴ m/s

6 0
3 years ago
Which equation below represents a generic equation suggested by a graph showing a hyperbola?
ruslelena [56]

Answer:

y = k/x

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Arte-miy333 [17]
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