/sci/ - Science & Math

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Anonymous Sat Mar 5 05:37:42 2011 No.2646473 [Reply] [Original]

oi /sci/, got a bit of a problem here!!
Ive got this question for physics but my answers
which where a.) 8.81m/s and b.) 1.465 s, were wrong,

the question is: During volcanic eruptions, chunks of solid rock can be blasted out of the volcano; these projectiles are called volcanic bombs. Figure 4-51 shows a cross section of Mt. Fuji, in Japan. (a) At what initial speed would a bomb have to be ejected, at angle θ = 34˚ to the horizontal, from the vent at A in order to fall at the foot of the volcano at B, at vertical distance h = 3.30 km and horizontal distance d = 10.7 km? Ignore, for the moment, the effects of air on the bomb's travel. (b) What would be the time of flight?

<----- its pic related

so could u help me out pleasseeeeee

>>	Anonymous Sat Mar 5 05:45:42 2011 No.2646489 So hold on, this volcanic "bomb" is supposed to travel 3.3km vertically and 10.7km horizontally in 1.465 seconds, at a speed of 8.81m/s? ARE YOU FUCKING RETARDED? THE VOLCANO WOULD BE LIKE 3m TALL

>>	Anonymous Sat Mar 5 05:48:42 2011 No.2646497 yea i just noticed a while ago, but all i used was -3.30= Vsin(34)t - 4.9t^2 and 10,7 = Vcos(34)t and just put the two equations together to solve for v and t?

>>	Anonymous Sat Mar 5 05:49:42 2011 No.2646499 How would I know STOP PRESSURING ME!

>>	Anonymous Sat Mar 5 05:51:42 2011 No.2646502 File: 28 KB, 303x374, 1298595514245.png [View same] [iqdb] [saucenao] [google] or u gonna turn into a volcanic "Bomb"

>>	Anonymous Sat Mar 5 05:52:42 2011 No.2646504 PROTIP: convert to meters

>>	Anonymous Sat Mar 5 05:53:42 2011 No.2646505 File: 39 KB, 460x276, 1298730777617.jpg [View same] [iqdb] [saucenao] [google] >>2646504 shit

>>	Anonymous Sat Mar 5 05:57:42 2011 No.2646513 File: 5 KB, 158x152, Slap1.jpg [View same] [iqdb] [saucenao] [google] >>2646504

>>	Anonymous Sat Mar 5 05:59:42 2011 No.2646515 File: 8 KB, 158x152, reverse slap.jpg [View same] [iqdb] [saucenao] [google] >>2646513

>>	Anonymous Sat Mar 5 06:00:42 2011 No.2646516 File: 25 KB, 157x148, Doubleslap.png [View same] [iqdb] [saucenao] [google] >>2646515

>>	Anonymous Sat Mar 5 06:02:42 2011 No.2646523 File: 25 KB, 157x148, reverse slap two hands.png [View same] [iqdb] [saucenao] [google] >>2646516

>>	Anonymous Sat Mar 5 06:03:42 2011 No.2646525 File: 47 KB, 1090x152, Slapfest.png [View same] [iqdb] [saucenao] [google] >>2646523

>>	Anonymous Sat Mar 5 06:04:42 2011 No.2646527 File: 287 KB, 480x360, orson.gif [View same] [iqdb] [saucenao] [google] >>2646525 >>2646525

>>	Anonymous Sat Mar 5 06:05:42 2011 No.2646529 File: 289 KB, 1920x1080, 1298296926118.jpg [View same] [iqdb] [saucenao] [google] thanks again /sci/ got it all correct

>>	Anonymous Sat Mar 5 06:05:42 2011 No.2646532 File: 27 KB, 160x160, Slap3.jpg [View same] [iqdb] [saucenao] [google] >>2646525 >>2646516 >>2646515 >>2646513

>>	Anonymous Sat Mar 5 06:06:42 2011 No.2646535 File: 79 KB, 548x646, My God.png [View same] [iqdb] [saucenao] [google] >>2646513 >>2646515 >>2646516 >>2646523 >>2646525

>>	Anonymous Sat Mar 5 06:07:42 2011 No.2646538 File: 46 KB, 354x450, 1298677083094.jpg [View same] [iqdb] [saucenao] [google] >>2646532

>>	Anonymous Sat Mar 5 06:11:42 2011 No.2646543 File: 18 KB, 334x324, Ogle.png [View same] [iqdb] [saucenao] [google] >>2646532 >>2646525 >>2646523 >>2646516 >>2646515 >>2646513 My sides hurt.

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