Recent content by Faka

Hi. I am working on this problem, which I have uploaded as a picture. I have a question to the sum of torques. Is there somebody how can explain me where all the sines and cosines comes from. I am not so good to the find sum of torques.

Hi. I have problem with this task. Is there somebody, who can help me?

Hi everybody. I am going to exam on Monday. I would like to make a experiment on how to measure the coefficient of friction. I know, that I can find the mu(s), by taking the tan to the angle α. μs = tan(α). Is there somebody, who has some others ideas how to measure that? Somebody...

Homework Statement I need to find the differential of the function: u = e-t*sin(s+2t) Homework Equations The Attempt at a Solution _______________________________________________________________________ I really don't know how to start.

I have made the task. Delete the topic, thanks ! :-)

Homework Statement 0.1100 mol AgNO3 translated into 500 mL of a solution containing 0.1000 moles of NaCl and NaBr 0.1000 moles. What are the concentrations of Ag+, Cl-, Br-, after equilibrium has occurred? Solubility product for AgCl: Ksp(AgCl) = 1,82*10^-10 Solubility product for AgBr...

I hope this is right :smile:

what do you mean exactly?

I've done this so far. I do not know how to determine what the limit is.

Hi! Is there somebody, who can help me with this exercise: "Use polar coordinates to find the limit. [If (r, θ ) are polar coordinates of the point (x,y) with r ≥ 0, note that r --> 0+ as (x,y) --> (0,0)]

I have just seen in my book, that the last equations needs to be: Vy = V0*sin(53,0) - g*t Is that true? So I get these two equation, that I need to use as you said: Vx = V0*cos(53,0) Vy = V0*sin(53,0) - g*t

Vx = V0*cos(53,0) Vy = V0*sin(53,0)

Which equation do I need to use?

Hi. I am lost in this problem. Could someone tell me what to do. How to start with the problem?

Ball 1 (Upward) x1 = 0 + v0*t + 1/2*(g)*t^2 = vo*t + g*t^2 Ball 2 (Dropped) x2 = h + 0*t + 1/2*(-g)*t^2 = h - 1/2*g*t^2x1 = x2 vo*t + g*t^2 = h - 1/2*g*t^2And then I solve for t, I get something that I can't write here. Its something divided by 2*g