Recent content by dherm56

I've recently decided to really try and learn a computer language for the first time. I've had a standard computer science course that covered C material but I found that language to be overly tedious and absolutely miserable. Matlab was interesting, and I enjoy using it for dynamics and other...

That's correct, thank you very much!

Still no luck

(4/52)*(4/51) is also incorrect. I used 48 the first time b/c that is all the cards besides an ace and only one needs to be drawn

Homework Statement Two cards are dealt from a deck of 52 cards. Find the probability that at least one of them is an ace. The Attempt at a Solution This is for an intro. stat class and the material is very simple but for some reason I cannot find this answer. The only attempt that...

Homework Statement A circular hoop rolls down a ramp without slipping. The angle of the ramp with respect to horizontal is 30 degrees. 1) What is the acceleration of the center of mass of the hoop down the ramp? a = ( 1/4 ) g a = ( 1/3 ) g a = ( 1/2 ) g a = ( 2/3...

Ooooh! Alright, that clears a lot of things up. Thank you very much!

So ultimately even though momentum is different, total mechanical energy is the same before and after the collision?

mechanical energy I am a little lost on. What is the discrepancy between that and momentum? I always thought total mechanical energy = total momentum

for case 1, the second collision has a smaller net magnitude because the system is not moving where as the first collision the carts continue in a positive direction. Therefore making the answer A for case 2, the speed of the cars are exactly the same and therefore stop when they collide...

Homework Statement Cart A and B are identical. Consider the two collisions described below. In Collision 1, Cart A starts from rest on a hill at height h above the ground and then collides with Cart B which is initially at rest on the ground. The two carts stick together. In Collision...

The conservation of momentum concept I understand. However, my answer of 2.82 is not correct. I got the correct answer. I forgot that vf of m1 is negative in reference to the lab frame. Thank you for the help

I changed my equation to m1v1i + m2v2i = m1v1f + m2v2f There is no initial velocity for m2 so that term cancels out. However, I was still unable to obtain the final velocity of m2

A cart (m1 = 110 kg) is moving to the right along a track at v1i = 17 m/s when it hits a stationary cart (m2 = 390 kg) and rebounds with a speed of v1f = 7 m/s in the opposite direction. a) With what speed does the 390 kg cart move after the collision? I used conservation of momentum...

5) If there are no external forces acting on a system in the x direction, but there is an external force acting on the system in the y direction, then the y component of momentum of the system is constant. True False 6) If work is done on an object by only conservative forces...