Recent content by traffic_boy

well , i agree with you and i have used this way before but with a small change..i found (a) and then i used this formula : f2 = (m1+ m2) a - m1 (a). but the final result is not consistent with the answer of the book...then it's not my fault if this is the right way,,

thank u for replying,,well,i've mentioned the 40 degrees inclined plane, but the only benefit of this 40 degrees is to help us to find the x component of weight, so if we complete the triangle made by the incline and the perpendicular line of the weight force , we'll get 50 degrees angle ...

Homework Statement a block of unknown mass is given a push up a 40 degrees inclined plane and then released. it continues to move up the plane (+) at an acceleration of -9m/s squared.what is the coefficient of kinetic friction ? Homework Equations f(friction) + mg cos 50 - F = -9 (m)...

hi ,, about the acceleration it should be the same because both the two masses can be considered as one system or it can be said as one mass..but the question that came to my mind is that is it correct to say that the forces exerted by the two masses are the same.. i have the same problem and...

thank you so much,,i got the idea, but I'm still thinking about if q(water) equals q(ball), can we prove that (Delta Temp) for water equals (Delata Temp) for the ball!

i'll be so grateful if you can help me for this problem: a 30.14-g stainless steel ball bearing at 117.82 c is placed in a constant-pressure calorimeter containing 120.0 mL of water at 18.44 C.if the specific heat of the ball bearing is 0.474 J/g.c, calculate the final temperature of the...

regarding this problem my dear brother, if we use the way you explained, then we are assuming that the change in Temp for water equals the chane in Temp of Iron, the thing that can't be proven, because the only thing that can be proven is that the heat(q) lost by the iron is equal to the heat...

Hello guys, am a new member here, and i'd love to share with you.. i've faced the same problem before, and I've tried to find any related formula, but the only one i got is the one that is mentioned by Ygggdrasil..it's mentoined here in Tippens Physics book that the mass of 100-mL of water is...