Подвес прикреплён к заднику.

Yes. In Russian, the verb to be is usually omitted in the present tense.

So:

• Подвес прикреплён к заднику. = The hanger/suspension piece is attached to the back panel.

If you wanted past tense, you would normally add был:

• Подвес был прикреплён к заднику. = The hanger was attached to the back panel.

So the original sentence describes a current state.

Прикреплён is a short passive participle from прикрепить.

It focuses on the resulting state:

• прикрепляется = is being attached / gets attached
• прикреплён = is attached / has been attached

So in this sentence, the idea is not the process of attaching, but the fact that the object is already in that state.

This is very common in Russian:

• Дверь закрыта. = The door is closed.
• Документ подписан. = The document is signed.

Because прикреплён is the short form, which is typically used predicatively after the noun, where English would use is attached.

Compare:

• прикреплённый подвес = the attached hanger

  • long form, used like an adjective before a noun

• Подвес прикреплён к заднику. = The hanger is attached to the back panel.

  • short form, used as part of the statement about the noun

So here the short form is the natural choice.

Yes. Short participles agree with the noun in gender and number.

Подвес is masculine singular, so the form is прикреплён.

Other possible forms would be:

• masculine singular: прикреплён
• feminine singular: прикреплена
• neuter singular: прикреплено
• plural: прикреплены

For example:

• Деталь прикреплена к заднику.
• Кольцо прикреплено к заднику.
• Крепления прикреплены к заднику.

Заднику is in the dative case.

That is because the preposition к normally takes the dative when it means to or toward, and also in phrases like attached to.

• dictionary form: задник
• dative singular: заднику

So:

• к заднику = to the back panel / to the back piece

This is the same pattern as:

• к стене = to the wall
• к двери = to the door
• к раме = to the frame

Because прикреплён к is the normal way to say attached to something.

• к emphasizes connection to an object
• на usually means on a surface or onto something

So:

• прикреплён к стене = attached to the wall
• лежит на столе = lying on the table

Sometimes English uses on where Russian prefers к, but with прикрепить / прикреплён the standard construction is very often к + dative.

Both words are somewhat context-dependent.

Подвес can mean things like:

• a hanger
• a suspension piece
• a mount
• sometimes a pendant-like hanging part

Задник literally refers to a back part of something, but in different contexts it can mean:

• a back panel
• a back piece
• a backdrop
• in some specialized contexts, something like a heel counter or another rear section

So the exact English wording depends on what object is being described. The grammar of the sentence stays the same either way.

Yes, they are related, but they are different parts of speech.

• задний = an adjective meaning rear, back
• задник = a noun meaning a back part / back piece / back panel, depending on context

So in this sentence, заднику is not an adjective. It is the dative singular of the noun задник.

The correct pronunciation is with ё:

• прикреплён

In many Russian texts, especially ordinary print, ё is often replaced by е, so you may also see:

• прикреплен

But it is still pronounced as ё, not plain е.

For learners, ё is very helpful because it also shows the stress clearly.

Because this is a short participle.

A useful pattern is:

• long form: прикреплённый
• short form: прикреплён

The long form has -нн-, while the short form normally has one н.

This difference is common:

• закрытый → закрыт
• подписанный → подписан
• прикреплённый → прикреплён

So the spelling here is standard.

Yes. Russian word order is fairly flexible, although the neutral order here is very natural:

• Подвес прикреплён к заднику.

You could also say:

• К заднику прикреплён подвес.

That version puts more emphasis on what it is attached to.

So the meaning stays basically the same, but the focus can shift depending on word order.