Recent content by bbhh

nevermind! i got it. wooooo. thanks for your help!

ok awesome. so i have it broken down to this equation: x = Vo http://www.wolframalpha.com/input/?i=0%3Dx*%28sin36.87%29*%28%2818%29%2F%28x*%28cos36.87%29%29%29%2B1%2F2%28-9.8%29*%2818%2F%28x*cos36.87%29%29^2 this is the right answer. new problem: I'm having a hard time solving it for Vo...

d = Vo(cosTheta)*t Vo(cosTheta) = d/t I don't know the vertical distance, the vertical displacement is 0.

okay, thanks for your help. that doesn't really get me much farther though, I'm pretty sure those are a few of the equations i had but with the trig worked into them, can you show me the next step? like I said, I don't know vi or t, as far as i can tell...

Homework Statement A gun is located at the origin. The gun is aimed 36.87 degrees above the horizontal. A vertical wall is located at x = 18m. The flat and level floor is at y=0m. Ignore air friction. a) What is the minimum initial speed necessary for the bullet to reach the wall without...

thanks

ohhh no no. i figured that one out, sorry. i mean this thread: https://www.physicsforums.com/showthread.php?t=335491

i think i just tried it so many times i messed myself up. it's pretty easy, thanks for your help. is there anyway you can check the other question i posted real quick? you're a life saver.

Homework Statement A circuit has a 50 V battery, and 3 resistors. they are all 25 Watts, 1 is in series, 2 are parallel. Find the current of the circuit. Homework Equations V=IR P=IV The Attempt at a Solution I know how to do these fine when I'm given the resistances or the...

i did that. the voltage of the parallel part is 7.2V, the bottom one is 5.4V, the resistor is .89V... but the right answer to this question is 10V. adding them together doesn't get 10V.. i really need someone to just show me how to do this last step.

ps. i got the second question right, thanks to your help. it was pretty easy. it's just this last bit on the other one I'm stuck on.

okay so i found the V: 1.2*6 = 7.2V. i then found the parallel amp: 7.2=2*I=3.6A the total amperage is 10.8 amps. the total resistance is 1/2+1/6=1/r = 1.5. +.5 + .0833 = 2.0833Ω i don't know what to do next. I'm sure i have all the info that I can get from this...i feel like I'm supposed to...

i will give it another shot, i think my problem is that i don't really know how the battery formula works i don't think.

ps. i could still use help.

ahhh shoot. I'm sure i had put it in there. i did it two ways this time. thanks for your help..