A:AnswerYes the wireless charging pad (Samsung Wireless Charger Stand EP-N5100) uses a USB type C cable to plug from the stand into a charging block. This charger comes with the wall adapter as well so it should fix the problem - especially since this is an OEM (official) Samsung charger.
A:AnswerNo. Make sure you check out the connector type since the S9 has a narrower or more compact USB connector. S9 needs USB- C. For the S5, it's just USB or USB -A.