Recent content by NIZBIT

Homework Statement For each matrix, can you write the third column of the matrix as a linear combination of the first two columns? \left[ \begin{array}{cccc} 1 & 2 & 3 \\ 7 & 8 & 9 \\ 4 & 5 & 6 \end{array} \right] Homework Equations x=a(U1)+b(U2) The Attempt at a Solution I...

thanks!

[SOLVED] Infinite series help Homework Statement \sum- (\frac{5}{4})^n i=infinity and n=0 Homework Equations Convergence of a geometric series \sum (ar)^n = a/(1-r) when 0<|r|<1 The Attempt at a Solution I have to explain why this series diverges or converges. The test for divergence gives...

Ok I see now. Wasn't so obvious last night.

I have a problem like the one below: https://www.physicsforums.com/showthread.php?t=114812 I understand how they derived it(I did the same thing) but never say what is the height. So could someone tell what the height is?

Find the geometric power series for the given function: f(x)=6/(2-x) c=1 I am stumped on this one. I've tried for an hour on this one with no luck. Could someone help?

Should I be using -60 degrees or 60 degrees?

I'm getting 2.34m/s due south

Now I'm confused. Is each vector multiplied by the mass then added together?

This is an angular inelastic collision problem: Mary, Bob and Jane are having a snowball fight. Mary throws a 50g snowball 60 degrees S of E at 6 m/s. Bob throws his 15g snowball 2.75m/s north. Jane's throws her 35g snowball at 3.25m/s west. How fast and what is the direction of the huge...

The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 20.0 m radius of curvature. What is the car's speed at the bottom of the dip?I'm stuck on this problem. I understand that at the bottom they feel 1.5 times heavier. Other than...

Ugh! I am having no luck finding any info on this lab. Although I know exactly where to buy the equipment, it doesn't help. Does anyone know where I could find this?

I think that is what they meant. Thank you!

Fletcher's cart? I am doing a lab on Fletcher's cart. When I try to do a search on this nothing comes up. Is this lab go by another more popular name?

There was this awesome help site for this topic. The name of it was something like "Dave's math help". I thought I saved the link but guess I didn't. Anyone know where I could possibly find this site or know of others?