This topic was discussed many times before but I hope to inspect it a bit differently.
I think it would be awesome if everybody knew why a question was down-voted. That way everyone could see the situation from others' perspective and realize the shortcomings better -if there are any. It would also help to see if the down-voter is just being a jerk or not, by keeping the anonymity intact of course.
Without any feedback it puts me into confusion trying to understand what specific part of the question was problematic. Was it due to misconception on physics, word selection, site rules, clarity of the question, wrong sign and so on.
I really do understand the site is trying to keep a threshold on the quality of questions and trying to prevent the place turning into a [you fill it], but using no-feedback-downvotes, especially an avalanche of them, is not the best way to achieve that in my opinion. It is using fear to drive the crowd in the end. What good would it do to hear "you did bad" again and again without being told the reason. It would only make people more hesitant. Many users might be used to this type of treatment from their families / friends and might be thinking this is the right way to do it, but after some thinking this is not the way I want to be guided or to guide anyone. A compassionate teacher is what I prefer and they would tell me kindly what I did wrong, instead of abandoning me with an obscure frown / bad mark.
To me it looks like a clear feedback mechanism will regulate the site much faster than the moderation is trying to do and this is why I suggest the feedback feature.