Mischa

The volume of a solid is given by V=pi x^2(lnx)^2. what is the approximate change in the volume when x is increased from 2.718 to 3.000? dv= PI 2x(lnx)^2 dx + Pix^2 *2lnx * 1/x reduce that. For x, use 2.718 dx= 3-2.718 check my thinking.

18 years ago

A worker pushes a 1500 N crate with a horizontal force of 345 N a distance of 24 m. Assume the coefficient of kinetic friction between the crate and the floor is .220. How much work is done by the floor on the crate? -M*g*(mu,k)*X Mg = 1500 N mu,k = 0.220...

18 years ago

A bird perched on a swing the sits 8 cm below a bar has a mass of 52 g, and the base of the swing has a mass of 153 g. The swing and bird are originally at rest, and then the bird takes of horizontally at 2 m/s. How high will the base of the swing rise ab...

18 years ago

Three point charges, q1, q2, and q3, lie along the x-axis at x=0, x=3 cm, and x=5 cm, respectively. Calculate the magnitude and direction of the electric force on each of the three points when q1=+6.0 muC, q2=+1.5 muC, and q3=-2.0 muC. I would add the for...

18 years ago

A force of 250 N is required to stretch a spring 5m from rest. Using Hooke's law, F=kx, how much work, in joules, is required to stretch the spring 7m from rest? The energy required scales with x^2. Multiply 250 J by (7/5)^2.

18 years ago

Can anyone help me interpret this poem/prayer? What does it reveal about Mesopotamian religious beliefs and practices? Thanks!! May the wrath of the heart of my god be pacified! May the god who is unknown to me be pacified! May the goddess who is unknown...

18 years ago

I need a title for a narrative about my fear of snakes and the time one got loose in our classroom. Any witty ideas?

18 years ago

I know that for a male to say that he is french, we use francais, and for a female, we use francaise. But when a female says that she speaks french, do we use francaise as in Je parle francaise? And when a female says that she likes French music, do we us...

18 years ago

I have to fill out this chart, I want to know did i do it correctly, thanks. Etre: Tu es Aimer: Tu aimes Habiter: tu habites s'appeler: tu s'appelles Parler: Tu parles

18 years ago

When I say I have one brother and he is 27 years old, do I say J'ai un le fr¨¨re or J'ai un fr¨¨re Il a vingt sept ans.

18 years ago

Based on all the questions I've asked. I believe there are no mistakes in these sentences? -J'aime la musique japonaise. -J'ai un frere, il a vingt sept ans. -Elle a vingt ans. -Elle est jeune, elle est jolie. (Should I use jolie or belle?) -Elle aime la...

18 years ago

I am not sure about the ordering of the words. Are the following correct? Do you speak French? Vous parlez francaise? I speak a little French. Je parle francais comme ci comme ca. My mom speaks french too. Ma mere parle francais aussi.

18 years ago

I need to write 2 process essays. Any good ideas? I know there's so many things I can do, but it's hard to come up with a good one.

17 years ago

I am doing a works cited page in MLA format. If I have two articles that are from the same website, just different places, do I document it as one source or two different ones?

17 years ago

Help! I have no idea how to do this. The earth's orbit is nearly circular with a radius R=93x10^6 miles (the eccentricity is e=.017). Find the rate at which the earth's radial vector sweeps out area in units of ft^2/s. What is the magnitude of the vector...

17 years ago

Find the velocity of a satellite orbiting above the equator of the earth in geosynchronous orbit (Period=24 hours) in km/hr. The earth's mass M=5.974x10^(24)kg and radius R=6,731 km. G=6.673x10^(-11) m^3/(kg*s^2) Use v=(G*M/R)^(1/2) I plugged everything i...

17 years ago

Find m and b so that y=mx+b is a solution to the differential equation dy/dx=1/2x+y-1

17 years ago

for a free throw in basketball,find an equation for the final angle to go into the hoop in terms of y and x to the hoop and the initial angle. I can't seem to get an equation with only those variables. I always get stuck with others like time and velocity...

17 years ago

What are examples of when friction can increase an objects Kinetic Energy?

17 years ago

Does anybody know a site that rates the education systems of countries? I know Britain's number one...

17 years ago

is it underfunded or under funded?

17 years ago

What is an example of two events that are neither disjoint nor independent? (I have no idea how that would even work)

17 years ago

A construction worker uses a steep tape to measure the length of an aluminum support column. If the measured length is 18.700 m when the temperature is 21.2 degrees celcius, what is the measured length when the temperature rises to 29.4 degrees celcius. I...

17 years ago

After a .800-nm x-ray photon scatters from a free electron, the electron recoils with a speed equal to 1.20 x 10^6 m/s. (a) What was the Compton Shift in the photon's wavelength? (b) Through what angle was the photon scattered? I got an answer for (a), bu...

17 years ago

I have to do an observational study for an AP statistics course. Does anyone have any good ideas?

17 years ago

What hybrid orbitals are used by nitrogen atoms in the following specis: (a)NH3 (b)H2N-NH2 (c)NO3- I got sp^2 for (a), but I'm not sure about the other two.

17 years ago

The fuel value of hamburger is 3.6kcal/g. If a man eats 1 pound of hamburger for lunch and if none of the energy is stored in his body, estimate the amount of water that would have to be lost in perspiration to keep his body temperature constant. (the hea...

17 years ago

The solubility of KNO3 is 155 g per 100 g of water at 75 degrees celcius and 38.0 g at 25 degrees celcius. What mass (in grams) of KNO3 will crystallize out of solution if exactly 100 g of its saturated solution at 75 degrees celcius is cooled to 25 degre...

17 years ago

which is more stable: methyl cyclopropane or cyclobutane and why?

16 years ago

which is the least stable isomer of C4H8: methyl cyclopropane or cyclobutane and why?

16 years ago

The solubility product of Mg(OH)2 is 1.2 x 10^-11. What minimum OH- concentration must be attained (for example, by adding NaOH) to decrease the Mg concentration in a solution of Mg(NO3)2 to less than 1.0 x 10^-10 M (molar)?

16 years ago

If a sample tube was smudged with a fingerprint when inserted into a spectrometer, what affect would this have on the value of A (absorbance) when you read it? explain.

16 years ago

A car moves with speed v on a horizontal circular track of radius R. The height of the car's center of mass is h, and the separation between the inner and outer wheels is d. The road is dry, and the car does not skid. Find the maximum speed the car can ha...

16 years ago

a very light rigid rod with a length of .500m extends straight out from one end of a meterstick. the meterstick is suspended from a pivot at the far end of the rod and is set into oscillation. determine the period of oscillation (hint: use the parallel-ax...

16 years ago

suggest a mechanism for 2Fe(3+) + 3I- -> 2Fe(2+) + (I3)-

16 years ago

how do i find the bifurcation for this: d^x/dt^2 = -.3 x - (x - 1)/((x - 1)^2 + a^2)^(3/2) - (x + 1)/((x + 1)^2 + a^2)^(3/2) we've tried using mathematica but it just runs forever...

16 years ago

Consider this reaction: 3 K2CO3 (aq) + 2 CrCl3 (aq) -> Cr2(CO3)3 (s) + 6 KCl (aq) If 1.2 moles of CrCl3 react, how many moles of K2CO3 will react with it? A. 0.80 mol K2CO3 B. 1.2 mol K2CO3 C. 1.8 mol K2CO3 D. 2.4 mol K2CO3 I'm not sure where to even begi...

10 years ago

(5x-20)(x+3) -(x^2-9)(x^2+9) Then are you sure the third one is written right? 18a^2b- is a to the 2b or is b something else

18 years ago

a(a-c)=23 a-c=23/a c=a-23/a

18 years ago

What are you trying to do?

18 years ago

18-12x

18 years ago

Thanks. I have another question. This sentence comes straight out of my textbook. Il aime la danse, la musique. Il is he, so why would it not be le danse, le musique?

18 years ago

o...so there's nothing like le musique or le danse. I just have to remember the nouns, I get it now, thanks. And my textbook is called initial 1.

18 years ago

And also, if a male says that he likes French music, so we also use francaise as in J'aime la musique francaise?

18 years ago

I remember that accent mark, I just don't know how to type it in. =) Thanks again.

18 years ago

no, i guess all kinds of pet food.

18 years ago

I have a PC and Windows

18 years ago

Thanks, SraJMcGin.

18 years ago

Thanks, actually i just start learning french two weeks ago. I have a question from before, you said that the adjective modifies the noun in number (singular/plural) and gender (masculine/feminine) and has nothing to do with the subject. -la musique goes...

18 years ago

I figured I rather do the accents by hand. lol Yeah, I am pretty sure where the accent goes. I was just wondering, how many languages do you know? You seem to know quite a lot.

18 years ago

Wow, that's amazing!

18 years ago

Personally, I really like the sound of the language. And I always wanted to go to France, maybe travel or even for work. I am just really interested in French culture. I would love to know some of your 75 good reasons to learn french.

18 years ago

We didn't need a french name for class, but Miche sounds nice. And thanks for doing this, I really appreciate it.

18 years ago

Is this sentence correct? She has 3 male cousins and 4 female cousins. Elle a trois cousins et quatre cousines.

18 years ago

So actually the order of the words doesn't really matter in French?

18 years ago

1st#=x-2 2nd#=x 1/2(x-2)+x=41 x-2+2x=82 3x=84 x=28

17 years ago

Complimentary angles add up to 90*. so 90-8=82 and 82/2 (b/c there's 2 x's) is 41. so the two angles are 41 and 49, the smaller one being 41*.

17 years ago

The area of a trapezoid is H*(b1+b2)/2. 128=32*(5+x)/2 128=16(5+x) 8=5+x 8-5=x x=3 inches

17 years ago

try factoring the bottom and using the triangle rule

17 years ago

Actually, it's arctan. 3/10*integral(1/((x-1)^2+1))dx =3/10arctan(x-1) + C

17 years ago

use v^2=Vo^2 + 2*a*x

17 years ago

that one's arcsin. factor it into: 4*integral(1/sqrt(16-(t^2+2t+1)))dt so, 4*integral(1/sqrt(4^2+(t+1)^2))dt divide everything in the sqrt by 4^2 and bring it out as 1/4, 4/4*integral(1/sqrt(1+((t+1)/4)^s))dt) now it's in arcsin form (remember u and du) s...

17 years ago

never mind. i got it.

17 years ago

ever mind...i got it.

17 years ago

the rate law is R=k[Fe3+][I-]^2

16 years ago

Thank you very much! I over analyzed it and made the problem harder than it was. That makes complete sense. Thank you for your speedy reply!

10 years ago