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vodomira [7]
2 years ago
13

Identify the positive and negative about trade blocs.

Physics
1 answer:
ohaa [14]2 years ago
5 0

Answer:

if this is on odyssey ware then i can edit my answer to help you

Explanation:

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A cylindrical wire of radius 2 mm carries a current of 3.0 A. The potential difference between points on the wire that are 44 m
BARSIC [14]

Answer:

a. E = 86.36 x 10⁻³ V/m = 86.36 mV/m

b. ρ = 3.6 x 10⁻⁷ Ωm

Explanation:

a.

The electric field in terms of the voltage is given by the following formula:

E = V/d

where,

E = Electric Field in the Wire = ?

V = Potential Difference = 3.8 V

d = distance between the points = 44 m

Therefore,

E = 3.8 V/44 m

<u>E = 86.36 x 10⁻³ V/m = 86.36 mV/m</u>

<u></u>

b.

Now, from Ohm's Law:

V = IR

R = V/I

where,

R = Resistance of wire = ?

I = Current = 3 A

Therefore,

R = 3.8 V/3 A

R = 1.27 Ω

Now, the resistance of a wire can be given as:

R = ρL/A

where,

ρ = resistivity of material = ?

L = Length = 44 m

A = Cross-sectional area = πr² = π(0.002 m)² =  1.25 x 10⁻⁵ m²

Therefore,

1.27 Ω = ρ*44 m/1.25 x 10⁻⁵ m²

(1.27 Ω)(1.25 x 10⁻⁵ m²)/44 m = ρ

<u>ρ = 3.6 x 10⁻⁷ Ωm</u>

5 0
3 years ago
Which best describes why liquids needs a container when a solid does not
Vladimir [108]

Answer:because liquids does not stick togather so it spreads out and solids don't

Explanation:

4 0
3 years ago
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Can you hit the monkey at a fast speed with gravity on?
Ierofanga [76]

Answer:

It depends how far the monkey is and how hard you throw the object because If the monkey is close, then you will most likely hit it

7 0
2 years ago
I’m which medium does sound travel fastest railroad track or across the room
blondinia [14]
The closer the particles, the more will be the propogation of sound waves. Room contains air molecules which are far away from each other. So it takes much time for one molecule of air to disturb the other one. But in case of solids, as particles are much closer(compared to fluids), disturbance generated by one molecule is quickly transmitted to the next molecule
3 0
2 years ago
Which force stops the car from moving?
Alex73 [517]

Answer:

The force of friction.

Explanation:

Gravity keeps the car on the ground.

Motion Allows the car to move.

The force of speed doesnt make sense.

Friction would cause the car to stop moving.

8 0
2 years ago
Read 2 more answers
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