# Posts by Kally

Total # Posts: 28

Chemisty
The average human body has 1.4x10^2 g of total K within it. Calculate the activity in disintegration/year of the potassium-40 in the average human body using your value of t1/2 (or K) of this substance

calculus
find a vector equation of the line, which passes through the point (1,3,11) and is perpendicular to the yz-plane

biology
what are the advantages for using nanotechnology?

biology
how can nanobots be used to fight the common cold?

Calculus
if vector a is parallel to vector b, but in the opposite direction, express the magnitude of a+b in terms of magnitudes of vectors a and b

Calculus
hah im trully very SORRY, ok now i double checked.. so everything should be right .... u, v, w are UNIT VECTORS. the angle between u and v is 25 degrees and the angle between vector v and w is 35 degrees. find (u+w-3v). NOTE: vector u and w are on opposite sides of vector v.

Calculus
SORRY, i wrote this question wrong before ... u, v, w are UNIT VECTORS. the angle between u and v is 25 degrees and the angle between vector v and w is 35 degrees. find (v+w-3v). NOTE: vector u and w are on opposite sides of vector v.

Calculus
u, v, w are UNIT VECTORS. the angle between vector v and w is 35 degrees. find (v+w-3v). NOTE: vector u and w are on opposite sides of vector v.

calculus
when does vector (a+b) = (a-b) mean? explain

don't listen to bill. he is in high school.

biology
How do organ systems work together to maintain homeostasis?

Science
Thanks a lot for helping

Science
A liter of water has a mass of 1000 g. What is the density of water?

Science
I need to write a paper (1500-2500)on Scientific Inquiry. I need to answer the impact society has had on the progress, if ethical or moral values figure into the research and sharing of information. I have used different search engines, but none have come up with the exact ...

Science
They were originally radiolabeled and the end result will only have two radiolabeled strands. Is this Correct?

Science
After replicated a DNA molecule with two strands three times, how many molecules of DNA are formed? Is eight the correct answer?

Science
Does anyone have any suggestions on where I might find the answers to my question? I have tried several different ways, but have not been successful. I think if I find the first one, I will find the others. If you have two strands of DNA, how many new DNA molecules will form ...

Science
Can someone tell me if I answered my question correctly? During the cell cycle when does DNA replication take place? During interphase and the DNA synthesis separates the eukaryotic cells into four phases. Gap 1 phase is the intervals between mitosis and initiation of DNA ...

absolute value
Is this right? x^2-14=0 x^2-6=0 x^2=14 x^2=6 sqrtx^2=sqrt14 sqrtx^2=sqrt6 x=+-sqrt14 x=+-sqrt6 solution set is: {+-sqrt6, +-sqrt14}

absolute value
|x^2-10|=4 x^2-10=4 or x^2-10=-4 X^2-14=0 x^2-6=0 (x-7)(x+2)=0 (x-2)(x+3)=0 x=7 x=-2 x=2 x=-3 solution set {-3,-2,2,7} (?????)

absolute value
|8m+7|=9 8m+7=-9 or 8m+7=9 -7=-7 -7=-7 8m/8=-16/8 8m/m=2/8 m=-2 m=1/4 the solution set is {-2, 1/4} Is this correct or do I need to go further or completely wrong!

Algebra
Can some one tell me if I have done this right? Write an equation in standard form with only intergers for the following line. The line with slope 6/7, through (0,7) y=mx+b y=6/7x+7 -6/7 -6/7 -7*(6/7x+y)=7*-7 6-7y=49

Algebra
i do not get this use division to determine whethe the binomial is a factor of f(x) F(x)=x^3+20x-32; x-2 yes or no

Algebra
I meant to put y^2/x^3 as my answer. Is that correct?

Algebra
do the indicated operations and write with only positive exponents and assume all variables are nonzero real numbers x^-5 y^7/x^-2 y^5 y^2/x^3 x^3=0

music
Is concertos a genre of the Romantic period that influenced or had an effect on music today? I think it did but I cannot find an example.

Chemistry
250-mL volumetric flask, 125 mL of a 6.0 M hydrochloric acid was added. This was then diluted with more water to reach the 250-mL mark. What is the molarity of the acid at this time? Initial: M1 = 6.0 M hydrochloric acid V1 = 125 mL = 0.125 L Diluted: M2 = ? M hydrochloric ...

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