Recent content by SAT2400

HELP!((BIOLOGY)) Cell signaling...induction and constitutive signaling? Homework Statement A cell secretes a substance that instructs a neighboring cell to adopt cell fate X. What term describes this process? A. Assymetric division B. Apoptosis C. Induction D. Retraction E...

Homework Statement In the Meselson-Stahl experiment, which banding pattern expected by which hypothesis/es would be the same? A. A single, medium-density band after the first replication is expected by both the semi-conservative and the dispersive hypotheses. B. A single, medium-density...

1 hard(?!) Biology Question!HELP! :/ Homework Statement If life had been "intelligently" design, and if an important design principle is conservation of material and efficiency of process, we would not expect DNA replication to involve the crazy, complex, intricate, Byzantine mechanism for...

1 Question! (Phylogeny) HELP PLEASE~! Homework Statement QUestion: Phylogeny predicts a hierarchical classification system because v Homework Equations related to descendents and ancestors.. The Attempt at a Solution A talks about structural form, C is like naming? either C or E is the...

BIOLOGY(defin. of Phylogeny??! URGENT! Homework Statement Question:Phylogeny predicts a hierarchical classification system because A. groups of descendents of one common ancestor are nested within a group of descendents from a more ancient common ancestor. B. the taxonomic system was made...

is the answer for 1 acetone? is the answer for 2 25.19ml? I know the formula already;;;;g/ML

g/mL =density =mass/volume? intensive physical property! please help!

HELP! 1 Density-volume question!??URGENT! Homework Statement 1.An unknown liquid has a mass of 26.366g and volume of 25.24 x10^-3 liters at 25'C. Identify the likely substance from the following information. Substance tricholorobenzene (density:1.454g/mL) acetone (density: 1.049g/mL)...

could you please show me?thanks

Umm, I am not supposed to use those tests... Is there any other method??

Infinite Series!??COnverge or Diverge Homework Statement 1. ∑(infinity, k=1) 5k^(-3/2) 2. ∑(infinity, k=1) 1/(k+3) Homework Equations converge or diverge The Attempt at a Solution 1. converges p=3/2... 5/(infin)=> 0 2. diverges p=1 I still don't get why 2 diverges? 1 converges...

2. answer is 5.3 x10^-28J..I don't know how to get this answer using the equation above. I used h=6.63 x10^-34Js and .1x10^-6s?...but didn't get the right answers..

ok. but h=6.63x10^-34Js? right? 26ns should converted into what?

ahhh got it! THank you! :) Can you please answer my other questions??(uncertainty problems?)

I already knew the equation...but I was not sure if I used the right numbers,,,?? h=6.63x10^-34Js c= 3x10^8m/s whatelse?? thanks