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3 years ago

Why naked wire cannot use in electromagnet

Physics

2 answers:

34kurt3 years ago

7 0

Answer:

Explanation:

The wire in the windings needs to be insulated. Electricity takes the shortest path from one place to another. If the wire is bare, then adjacent turns are touching. The result is the current flows through the shortest path between the leads of the electromagnet, never flowing through a single turn of the coil.

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Maksim231197 [3]3 years ago

3 0

Answer: It will short between the windings; the current rather than passing around and around and around the core will just pass across the surface and create no magnetic field (which is proportional to the number of turns it takes around the core).

Explanation: If naked wire is used then the iron rod also acts as a conductor and short circuit takes place instead of showing magnetic effect of electricity to the molecules of the rod. Hence, naked wire is not used while making electromagnet.

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4 years ago

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Spaceship 1 and spaceship 2 have equal masses of 200 kg. Spaceship 1 has a speed of 0 m/s, and spaceship 2 has a speed of 10 m/s

m_a_m_a [10]

Answer:

2000 kg m/s

Explanation:

The momentum of an object is a vector quantity whose magnitude is given by

$p=mv$

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v is the velocity of the object

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In this problem, we have:

- Spaceship 1 has

m = 200 kg (mass)

v = 0 m/s (zero velocity)

So its momentum is

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v = 10 m/s (velocity)

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$p_2=(200)(10)=2000 kg m/s$

Therefore, the combined momentum of the two spaceships is

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3 years ago

Two children want to balance horizontally on a seesaw. The first child is sitting one meter to the left of the pivot point locat

Natali [406]

Answer:

d. 2m to the right of the pivot

Explanation:

m1 = m

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d1 = 1m

d2 = ?

from principle of moment,

CWM = ACWM

m × 1 = 0.5m × d2

d2 = m/0.5m

= 1/0.5

= 2m

The 2nd child will have to sit 2m to the right

The turning effect of a force is known as the moment. It is the product of the force multiplied by the perpendicular distance from the line of action of the force to the pivot or point where the object will turn.

The principle of moments states that when in

equilibrium the total sum of the anti clockwise

moment is equal to the total sum of the

clockwise moment.

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In equilibrium

Total Anticlockwise Moment = Total

Total Anticlockwise Moment = TotalClockwise Moment

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3 years ago

A 50 kg skater pushes off from a wall with a force of 200 N. What is the skater's acceleration?

lutik1710 [3]

Answer:

Explanation:

mass (m) = 50 kg

Force (F) = 200 N

Acceleration (a)= ?

WE know

F = m * a

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a = 200 / 50

a = 4 m/s²

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3 years ago

A yellow and green car traveled 400 miles to Dayton, OH. The green car made the trip in 10 hours. The yellow arrived in 8 hours.

elixir [45]

Answer: C)The yellow car was faster. Yellow traveled at a speed of 50 mph while green was traveling at an average of 40 mph.

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So, the correct choice is

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4 years ago

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Why naked wire cannot use in electromagnet​

Why naked wire cannot use in electromagnet