<p>
[quote]
Earth and Mars dont have the same weight. And thats not the question. No one is denying that there is weight. Its what the scale reads.
If you have a scale that you stand on and someone pushes the bottom of the scale with equal force, it would show 0 correct?
[/quote]
</p>
<p>Yes that is true, but in this case, there was no counteracting force. The answer was either 10N or 20N. I believe it is 20N.</p>
<p>Perhaps so
Althought I remember it being 10 on each side pulling in opp. directions.
Its not testing you on how spring scales work, but rather your knowledge of physics.
They want you to realize that the forces are in opp. directions and thus cancel out.</p>
<p>@_@</p>
<p>Everyone's argument sounds valid.</p>
<p>I NEED AN ADULT!!! I NEED AN ADULT!!!</p>
<p>Go ask over in the engineering section.</p>
<br>
<p>_></p>
<br>
<p>Was that just a coincedence because I was just kidding about that adult thing.</p>
<p>It's 10N. The string passes over the pulley, which, because it is in static equilibrium, in effect makes each half of the string its own system. Imagine taking away the pulley and just holding the string pinched between your fingers at that point. This makes two independant strings each with a tension of 10N. Because the tension is constant throughout the string, the answer is 10N.</p>
<p>Any1 took the sunday test.</p>
<p>I thought it was also harder than normal. Omitted 0 but I prob got 5-10 wrong.
1 electroscope question was retarded (not the same as the regular testing question. This one asked what charge the iron rod would have for the leaves to pull apart. Positive and negative were both choices).</p>
<p>I can confirm it was 10N, my teacher and I did the problem in class, hands on.</p>
<p>YES!!! My 800 is significantly more possible now. Thanks yanksman. Good stuff.</p>
<p>lol, the curve is predetermined. IDK, I took it without any AP under my belt or even a year of physics for that matter (well, one month of AP since I took it in october) and it wasn't bad, save a few E and M questions....</p>
<p>Actually... my teacher and I did the problem in class, as well. He said it depends which type of spring scale you use, but for the type they were most likely reffering to, the scale would read 0...</p>
<p>i omitted 12 and know i have 3 incorrect so far. give or take a few more mistakes, what would my score be?</p>
<p>YAY SISHU thats better for me hahahha i still dont know what the right answer is, but i hope you're right :)</p>
<p>definitely 10N,,i have seen this question many times in tests at school..</p>
<p>i dunno guys i put 10, but now that i read it, it could be 0.</p>
<p>who know the curve of june 2 physics?</p>
<p>I missed 5 and got about5-7wrong answers...can i score 800?</p>
<p>anyway,i hope it have a easy curve</p>
<p>Were there any Roman numeral question with light waves, waves on a string and sound waves asking which were transverse?</p>
<p>sound waves are longitude,in my opinion</p>
<p>violaina:
from the practices id done last year, i thikn you can miss around 9 to get a 800. i took it in may last year two days before my AP Physics B exam. i thought i got KILLED and ended up getting a 800. so when you thikn you did badly, so did everyone else. i think a -6 should have a pretty good chance for 800.
and yes, sound waves are longitudinal.</p>