Recent content by Lorelyn

Thanks! I actually just figured it out by myself all it took was a couple hours staring at it blankly before something clicked in my brain! :)

I have a problem in which I am given a 2-by-2 matrix A (0,8 / 5,7) which I am asked to write as a product of elementary matrices. Then I am asked write the inverse of A as a product of elementary matrices. So I turned A into reduced row echlon form using the following steps: -Switch R1 and...

All of which equations? I get that Fnet = 0 because there is no acceleration, but how do I relate that to velocity? or to the components of the other forces?

Homework Statement A 21000 kg helicopter is lifting a 5000 kg truck with an upward acceleration of 2.00 m/s2. Calculate the force the air exerts on the helicopter blades. Homework Equations F=ma The Attempt at a Solution I did the total force is equal to the sum of the two...

So I just go: Fx: -10-1+____=2 Fy: 9+4+___=-7 Fz: 4+2+__=0 Where the blanks are the third force?

Homework Statement Three forces act on a particle that moves with a constant velocity v = 2 m/s x – 7 m/s y . Two of the forces acting on this particle are F1 = -10.0N x + 9.0N y + 4.0N z and F2 = = -1.0N x + 4.0N y + 2.0N z . What is the magnitude of the third force? Homework...

Homework Statement Volcanoes eject rocks at speeds of 100 m/s. Consider a 1250 m high volcano which ejects rocks in all directions. What is the maximum horizontal distance at sea level reached by the rocks? Homework Equations basic kinematics ones The Attempt at a Solution Well...