Recent content by DeathCrawls

sooo can you put that in like noob terms or so?

woooooo what does that mean, never even heard of that equation

The right side is incorrect. The momentum is simply the momentum of the combined child-adult-chair, so it should be (m-adult + m-child)*v-final Also, the energy that is being gained or lost is kinetic energy. You need to determine the initial and final kinetic energies of the child. so...

Last one (FYI) this is for a review that will not be graded but I just need help for a final that I will be having tmrw, trying to get all the practice in I can. A .5 kg super ball is dropped onto the floor. It is going 20 m/s when it hits and is going 18 m/s as it comes up off the floor...

1.A 20 kg child running at 4 m/s jumps into the lap of an adult sitting in a office chair with wheels. The adult plus the chair have mass of 60 kg. The collision of course is inelastic. Determine the velocity after the collision and determine how much energy is lost. I F...

Thanks

Can i ask you some other question that I need help on?

0! wow, thank you high school -.-

Haha alright sorry I do believe that the period of a higher pitch will increase because of a higher frequency in the vibrations, the frequency would obviously increase due to Hz increasing, Amp, i think it could stay the same? i am a little confused on that one, higher pitch due to higher...

I got the total momentum as being .15 from 150x.001 Then i got the other side to be 2v+.15 But wen I try to solve it comes out as 0? the equation i got was .15=2v+.15

Well a circle has pi(r)^2, but the cylinder has a height measurement because it holds volume while a circle is 2d.

Homework Statement A sound goes up one octave, from 256 Hz to 512 Hz. What happens to the, period, frequency, amplitude, pitch, and speed? (choices are increase decrease or stay same) Why? Homework Equations N/A The Attempt at a Solution N/A

Homework Statement A student hold a 2kg air rifle loosely and fires a paint ball that has a mass of .001 kg. The paintball is fired at 150 m/s. What is the recoil velocity of the rifle? If the 48kg student holds the rifle more firmly, so that it rests against there body, what is the new recoil...