Recent content by lokobreed

I still don't see how to formulate the linear impulse if I am doing the change of momentum problem correctly.

Tim thank you very much for your help. Could you just clarify what you said please. 1) A 0.30 kg potato speed changes from 6.0 m/s to 2.0 m/s. What is the change in momentum of the potato - this is mv(f) - mv(i) ? 2) A 0.30 kg potato speed changes from 6.0 m/s to 2.0 m/s. What is the...

so the above question and this "A 0.30 kg potato speed changes from 6.0 m/s to 2.0 m/s. What is the change in momentum of the potato" mean the same thing? for this question i got 1.2 kg m/s from subtracting mv(i) from mv (f), but i thought that this was just for the change in momentum and...

Homework Statement A 0.30 kg potato speed changes from 6.0 m/s to 2.0 m/s. What is the linear impulse of the potato Homework Equations The Attempt at a Solution mv(final) - mv(initial) .3 * 2-.3 * 6 = This gives me the change but after that I am lost... any help?

thank you I got 12m/s

Homework Statement The passengers in a roller coaster car feel 50% havier than their true weight as the car goes through a dip with a 30 m radius of curvature. What is the cars speed at the bottom of the dip? Homework Equations ... The Attempt at a Solution I understand that there...

Thank you! What you said just made me remember everything somehow! Thank you!

Ok... so I had this down and now I am all confused ;/ I am not posting in the homework sections because its not for homework although I will gie an example of a problem... I just want to understand why/how they use these to find the force/tension... Example: A 20 kg loudspeaker is...

Homework Statement How many grams of Na2CO3 are required to completely react with 35.6 mL of a .315 M HCL Soliution? Homework Equations Na2CO3 + 2 HCl -> 2 NaCl + CO2 + H20 The Attempt at a Solution 1) Would I find the grams per mol of Na2CO3?

right but as in groups i am saying that the double bond between the C=C is looked as one group not 2...

perhaps i just don't understand this ... but wouldn't H H | | H-C=C-H be 5 groups total or are you just counting each central atom by itself thus each C would have 3 groups resulting in an SP2 hybridization?

In my take home study guide it says that C2H4 is an example of an SP2 hybridization... but when I draw out the electronic geometry I do not get a SP2 hybridization... am I doing something wrong or is my handout incorrect. I get C2H2 as being an example of an SP2 hybridization

Electro Negativity, Ionization Energy, and Electron Affinity... Can anyone explain these to me in normal English please? I am having a hard time understanding these concepts from the definitions given in the book and from my teacher. Thank you.

anyone help with this understanding?

1. Calculate the percent difference of freefall acceleration for the light and heavier picket fence Lighter Picket Fence - Mass 95.84 g | Acceleration 6.4141 m/s2 Heavier Picket Fence - Mass 128.16 g | 8.995 m/s2 2. Compare each of the values from the graphs to the accepted value of free...