Recent content by narutoish

Ok so when I calculate it I am getting a really small number for CE which is leading me to think it is a zero force member.

oh yes makes sense, but but BE is, correct?

Well rule 1 appies to both BE and CE so I am going to say they are?

Homework Statement So I was working on this problem, and my only questions are wether BE and CE can be assumed to be no force members? Also if I am not sure a member is a no force member, will it be revealed once I do the calculations, Homework Equations ΣF = 0 The Attempt at a Solution I...

So in this case we say it's theta/2?

Homework Statement Homework Equations F^2 (resultant ) = F1^2 + F2^2 -2F1F2cos(theta) The Attempt at a Solution i calculated the magnitude using the equation above and it ended up being : F (resultant) = F sqrt(2-2cos(theta)) i don't know how to solve for the angle.

X = v(cos 45)t So i know x but i don't know v or time so if i have it right we have to do a system of equations. What should the second equation be?

So does anyone know how i can go about the problem?

I don't think I have to worry about the curvature of the earth. This should be a basic projectile motion problem since that's what we are doing in our class.

Homework Statement A submarine-launched missile has a range of 4330 km. (a) What launch speed is needed for this range when the launch angle is 45°? (b) What is the total flight time? (c) What would be the minimum launch speed at a 22° launch angle, used to "depress" the...

Homework Statement (a) Calculate the magnitude and indicate the direction of flow of current in Figure 20.40. E2 = 19.0 V and r2 = 0.55 Ω. (b) Find the terminal voltage of each battery. Homework Equations V = Ir The Attempt at a Solution I found the answer for part a...

Kinetic energy, of course! Thank you.

Homework Statement How much energy must the shock absorbers of a 1240 kg car dissipate in order to damp a bounce that initially has a velocity of 0.840 m/s at the equilibrium position? Assume the car returns to its original vertical position. Homework Equations Fs = -kx The spring...

Thanks I got it now. But is reason I couldn't use the Q =mcT equation because of the phase change? Thanks Chet

Thanks guys I got it.