Recent content by ryan1180

Thanks! It looks like I just failed to make a simple connection between concepts. There is also a part B that asks: How many solutions will the system Bx = 0 have if λ = 2? I've tried to find an answer for this part, but haven't had much success. Looking ahead in my book seems to indicate...

Okay, so since the matrix is singular when λ=-2 or 3, my answer then be that the matrix has an inverse at λ≠-2,3, correct?

Homework Statement Let B= \begin{pmatrix} λ-3 & 12 & -1 \\ 0 & λ+2 & λ \\ 0 & 0 & 5 \end{pmatrix} For what values of λ does matrix B have an inverse? Homework Equations The Attempt at a Solution I first tried to calculate det(B)=(λ-3)(5λ+10) +0 -0 to get x=-2 or...

Are my formulas correct at least?

Homework Statement A student has two ramps, both of which are at an angle of 30o. Ramp 1 is frictionless and ramp 2 has friction. The student also has two blocks, one for each ramp. She pushes the blocks up the ramps with the same initial velocity. The block on ramp 2 only travels a...

Yeah, I had calculated it with 10 m/s^2 and then changed it to 9.8 but forgot to change it on my note sheet that I'm working the problems out on. Thanks!

Homework Statement Three blocks are pushed up a frictionless plane that is inclined at an angle of 30 degrees with respect to the horizontal as shown below. The blocks move together with constant acceleration a = 3.0 m/s2. The masses of the blocks are: MA = MC = 1 kg, and MB = 2 kg. The next...

Am I at least using the correct formula for this? I'm not even sure about that...

Homework Statement A cart moves with velocity vC = 10 m/s in the horizontal direction as shown below. [PLAIN]https://online-s.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?courses/phys100/fall10/hwb/04/01/cart.gif A ball is ejected from the cart with an initial velocity vB...

Thanks for your help. That's what I originally had but thought it was too simple as well!

So to obtain the final answer I would just use vf=vo+at? vf=2.2+(1.9)(2)?

Thanks for your help, I got as far as the fourth line, however this class is take with Calc I, so the last line and the whole topic of integration makes no sense to me, or is it just that I'm unfamiliar with the terms you are using?

Homework Statement An object moves with constant acceleration a = 1.9 m/s2 in the due East direction. At time t = 0, the velocity of the object is v0 = 2.2 m/s in the due North direction. What is the magnitude of the velocity at t = 2 s a]v=2.9 m/2 b]v = 3.6 m/s c]v = 4.1 m/s d]v = 4.4 m/s...