deleted35362 Posted January 14, 2014 Share Posted January 14, 2014 Who and why did you have to do that? mewyeon, the best sister in the whole wide world and serenity <_< Quote Link to comment Share on other sites More sharing options...
Leinex Posted January 14, 2014 Share Posted January 14, 2014 I tried my hand at the other two problems, but I got them horribly wrong. :C "An unstable nucleus with a mass of 15.0 ×10e−27 kg initially at rest disintegrates into three particles. One of the particles, of mass 3.3 × 10e−27 kg moves along the positive y - axis with a speed of 5.5 × 10e6 m/s. Another particle, of mass 8.9 × 10e−27 kg moves along the positive x - axis with a speed of 2.8 × 10e6 m/s. Find the speed of the third particle." "A(n) 15 kg object, initially at rest in free space, “explodes” into three segments. The masses of two of these segments are both 4 kg and their velocities are 4 m/s. The angle between the direction of motion of these segments is 53 degrees. What is the speed of the third segment?" I think the notion of Physics and Calculus being related is a lie. D; Quote Link to comment Share on other sites More sharing options...
AnonymousSpeed Posted January 14, 2014 Share Posted January 14, 2014 mewyeon, the best sister in the whole wide world and serenity <_< ...okay, that's an opinion I have to reference for. And why does serenity matter? Isn't that a mod or did you do that to actually get some peace about something? Quote Link to comment Share on other sites More sharing options...
AnonymousSpeed Posted January 14, 2014 Share Posted January 14, 2014 "An unstable nucleus with a mass of 15.0 ×10e−27 kg initially at rest disintegrates into three particles. One of the particles, of mass 3.3 × 10e−27 kg moves along the positive y - axis with a speed of 5.5 × 10e6 m/s. Another particle, of mass 8.9 × 10e−27 kg moves along the positive x - axis with a speed of 2.8 × 10e6 m/s. Find the speed of the third particle." "A(n) 15 kg object, initially at rest in free space, “explodes” into three segments. The masses of two of these segments are both 4 kg and their velocities are 4 m/s. The angle between the direction of motion of these segments is 53 degrees. What is the speed of the third segment?" First? Can't help you, you really should consult the textbook or ask your teacher for help. Second though, we know the mass of the object, 7 kilograms. There is no friction at all, so their speed is based entirely on their initial velocity and mass, as demonstrated by the two pieces of equal weight. Now, I'm no genius at this kind of thing but I'm sure you, who is taking the class, can work with that. Quote Link to comment Share on other sites More sharing options...
deleted35362 Posted January 14, 2014 Share Posted January 14, 2014 ...okay, that's an opinion I have to reference for. And why does serenity matter? Isn't that a mod or did you do that to actually get some peace about something? i want serenity back v_v Quote Link to comment Share on other sites More sharing options...
Breezy Kanzaki Posted January 14, 2014 Share Posted January 14, 2014 I tried my hand at the other two problems, but I got them horribly wrong. :C "An unstable nucleus with a mass of 15.0 ×10e−27 kg initially at rest disintegrates into three particles. One of the particles, of mass 3.3 × 10e−27 kg moves along the positive y - axis with a speed of 5.5 × 10e6 m/s. Another particle, of mass 8.9 × 10e−27 kg moves along the positive x - axis with a speed of 2.8 × 10e6 m/s. Find the speed of the third particle." "A(n) 15 kg object, initially at rest in free space, “explodes” into three segments. The masses of two of these segments are both 4 kg and their velocities are 4 m/s. The angle between the direction of motion of these segments is 53 degrees. What is the speed of the third segment?" I think the notion of Physics and Calculus being related is a lie. D; What I saw in that:Why in the second question is it a(n) 15... IT SHOULD JUST HE FREAKING A. DJEJCOENSAJFIE Quote Link to comment Share on other sites More sharing options...
PM ME MARIANNE ART Posted January 14, 2014 Share Posted January 14, 2014 CHANGED EVERYTHING ANyway, be back in a few hours Quote Link to comment Share on other sites More sharing options...
AnonymousSpeed Posted January 14, 2014 Share Posted January 14, 2014 i want serenity back v_v Who? CHANGED EVERYTHING Anyway, be back in a few hours ...wow. Reminds me of detectives. Quote Link to comment Share on other sites More sharing options...
Sorin Posted January 14, 2014 Share Posted January 14, 2014 CHANGED EVERYTHING ANyway, be back in a few hours ...Who are you again? Quote Link to comment Share on other sites More sharing options...
AnonymousSpeed Posted January 14, 2014 Share Posted January 14, 2014 ...Who are you again? It's Duck. Quote Link to comment Share on other sites More sharing options...
deleted35362 Posted January 14, 2014 Share Posted January 14, 2014 Who? my friends list she stopped coming to skype ages ago v_v Quote Link to comment Share on other sites More sharing options...
Shadow Mir Posted January 14, 2014 Share Posted January 14, 2014 waaaaaaaaaaaaaaaa roar works even if the opponent has a substitute?????????????????????????????????????? my life has been a lie Sound based moves hit through substitutes. Quote Link to comment Share on other sites More sharing options...
Pull My Devil Trigger Posted January 14, 2014 Share Posted January 14, 2014 Ohhh...My teacher never mentioned anything about recoiling in class, though. At least this stuff wasn't on the test today... @.@; The water is still, so it's a flat surface. Only the first question is about recoil actually, the second one is about friction. That's why physics is so beautiful, the subjects come together In that case... Fr=μ*N since F=m*a we have, m*a=μ*N N is m*g so we have, m*a=μ*m*g a=μ*g a is the module of the acceleration of the system, which we can find with the initial and final speed of the system and the distance traveled V2 = V02 + 2*a*ΔS 0 = (0.71)2 + 2*a*3.61 7.22*a = 0.5041 a=0.07 With all this, we have: 0.07=μ*9.8 μ=0.007 I guess that's it :x You might wanna check if any of the calculations aren't wrong, though Quote Link to comment Share on other sites More sharing options...
DodgeDusk Posted January 14, 2014 Share Posted January 14, 2014 I feel smarter just by looking at that Quote Link to comment Share on other sites More sharing options...
AnonymousSpeed Posted January 14, 2014 Share Posted January 14, 2014 Only the first question is about recoil actually, the second one is about friction. That's why physics is so beautiful, the subjects come together Fr=μ*N since F=m*a we have, m*a=μ*N N is m*g so we have, m*a=μ*m*g a=μ*g a is the module of the acceleration of the system, which we can find with the initial and final speed of the system and the distance traveled V2 = V02 + 2*a*ΔS 0 = (0.71)2 + 2*a*3.61 7.22*a = 0.5041 a=0.07 With all this, we have: 0.07=μ*9.8 μ=0.007 Physics are great Mr. Tonton, G stands for acceleration caused by gravity, right? Quote Link to comment Share on other sites More sharing options...
Pull My Devil Trigger Posted January 14, 2014 Share Posted January 14, 2014 (edited) I feel smarter just by looking at that I like helping people with that I might even become a professor even if it's a shitty job in my country Physics are great Mr. Tonton, G stands for acceleration caused by gravity, right? Yes Oh yes, on another note, you should check if your textbook/professor don't use any other letters for some of those, Criz :x I had formulas that had three different ways depending on teacher or text book xc Edited January 14, 2014 by Tonton Quote Link to comment Share on other sites More sharing options...
PKLucas531 Posted January 14, 2014 Share Posted January 14, 2014 in my classes g stood for mass, lol Quote Link to comment Share on other sites More sharing options...
DodgeDusk Posted January 14, 2014 Share Posted January 14, 2014 I like helping people with that I might even become a professor even if it's a shitty job in my country Dew et Quote Link to comment Share on other sites More sharing options...
Sorin Posted January 14, 2014 Share Posted January 14, 2014 It's Duck. ...Sarcasm... Quote Link to comment Share on other sites More sharing options...
DodgeDusk Posted January 15, 2014 Share Posted January 15, 2014 (edited) I have (Meh...) friends Sorin-kun? >: Edited January 15, 2014 by DodgeDusk Quote Link to comment Share on other sites More sharing options...
Pull My Devil Trigger Posted January 15, 2014 Share Posted January 15, 2014 Dew et but I need money and electronics are expensive as fuck here because taxes xc btw, if you want to blame someone for the lack of an update, blame Criz and her physics Quote Link to comment Share on other sites More sharing options...
HK Motendra Posted January 15, 2014 Share Posted January 15, 2014 hello thread Quote Link to comment Share on other sites More sharing options...
AnonymousSpeed Posted January 15, 2014 Share Posted January 15, 2014 I like helping people with that I might even become a professor even if it's a shitty job in my country Yes Oh yes, on another note, you should check if your textbook/professor don't use any other letters for some of those, Criz :x I had formulas that had three different ways depending on teacher or text book xc Professors are not to be taken for granted. Even if knowledge is not the most valuable thing to you, chances are that knowledge let it exist. Thank you. And the triangle followed by an S? ...Sarcasm... Really? Well of course, it was just oozing with distinction. Quote Link to comment Share on other sites More sharing options...
AnonymousSpeed Posted January 15, 2014 Share Posted January 15, 2014 but I need money and electronics are expensive as fuck here because taxes xc btw, if you want to blame someone for the lack of an update, blame Criz and her physics I like physics sir, I can't help you with money though, sorry. hello thread Do you have pet peeves? Quote Link to comment Share on other sites More sharing options...
Breezy Kanzaki Posted January 15, 2014 Share Posted January 15, 2014 *sighs* Quote Link to comment Share on other sites More sharing options...
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