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• ### parametrization, calc 3?

1.) reparametrize the curve

x= (4-t^2) / (4+t^2) , y= (4t) / (4+t^2)

by arc length and compute the curvature 'k' by using 'k'= absolute value of [ dT/ds]

1 AnswerMathematics1 decade ago
• ### calc 3 volume problem, please help?

Find the volume of that part of the sphere with radius 3 and center (0,0,0) which lies above the plane z=2

2 AnswersMathematics1 decade ago
• ### hard calc 3 problems, please help?

Please help with any problem

1.) reparametrize the curve

x= (4-t^2) / (4+t^2) , y= (4t) / (4+t^2)

by arc length and compute the curvature 'k' by using 'k'= absolute value of [ dT/ds]

2.) Find the maximum and minimum values of the function f(x,y)= 2x^2 + x + (y^2)-2 on the region D= { (x,y) I x^2 + y^2 ≤ 4}

3.) Find the vulume of that part of the sphere with radius 3 and center (0,0,0) which lies above the plane z=2

thanks ALOT

2 AnswersMathematics1 decade ago
• ### calculus 3 lagrange multipliers?

A package in the shape of a rectangular box can be mailed by U.S. Parcel Post if the sum of its length and girth (the perimeter of a cross-section perpendicular to the length) is at most 84 in. Find the dimensions of the package with largest volume that can be mailed by Parcel Post.

thanks

2 AnswersMathematics1 decade ago
• ### organic chemistry water and solubility?

If added to a water-soluble molecule, which of the following functional groups will most likely decrease its solubility?

Carbonyl

Phosphate

Sulfhydryl

Hydroxyl

Methyl

1 AnswerChemistry1 decade ago
• ### college student need advice?

i am a first year premed student in undergrad university. i received a C in calc 2 and definitely not happy with it. i could take calc 3 next semester if i wanted. should i take it over and get an A in calc 2 or would it look better to get an A in calc 3. how does each situation look, what would medical schools like best? is it better to repeat and pass or go higher. i heard it looks awful to admissions if i was to repeat. this is just the end of my first semester.

1 AnswerOther - Education1 decade ago
• ### university what should i do?

i am a first year premed student in undergrad university. i received a C in calc 2 and definitely not happy with it. i could take calc 3 next semester if i wanted. should i take it over and get an A in calc 2 or would it look better to get an A in calc 3. how does each situation look, what would medical schools like best? is it better to repeat and pass or go higher. i heard it looks awful to admissions if i was to repeat. this is just the end of my first semester.

• ### sponsoring my spouse- please help?

so far i am more than halfway through the i-130 process of helping my spouse immigrate. i am concerned about the affidavit of support. i am on welfare and and do not work. this has been the case for the last four years ever since my previous husband passed away. of course i cannot meet the income level required and will need a co sponsor. will my case still be denied since i have been on welfare?

4 AnswersImmigration1 decade ago
• ### what does the internet need?

what does the internet need. Please try to be specific

thanks

4 AnswersOther - Internet1 decade ago
• ### what does the world need?

what does the world need?

what does the internet need?

Please try to be specific.

9 AnswersOther - Society & Culture1 decade ago
• ### i need some good advice. once in a lifetime long story sorry. ?

it started during childhood. both of us were around 4 or 5 years old and i didn't know better because i was too young. i would run around telling her mom and dad that i loved her and that i would marry her and that her dad was my father in law and her mom was my mother in law. i was only 4 or 5 i was too young to understand what that really meant. me and her live in two different worlds. she lives half way around the world in a poverty filled country which is my birth place. so ten years after i leave her and live in america we decide to go back to my birth place. funny we meet and all memories come rushing back. i am so shy to see her for the first time and she, i dont know how she felt actually for the first day meeting me again, but she did not seem normal, most likely shy as well. day 2 lights go out and we kiss like crazy. of course of all the people there, no one notices us in a room, but keep in mind just about everyone there knew that we were crazy for each other when we were little. but no one wanted us together i think. next few days we are at at again madly in love and kissing, nothing too physical. probably sixth day we are alone and lights out in bed but her mom knocks on her door. Sad part is that i am leaving her the next morning and heading for america. after ten years we meet and already we separate. we are both eighteen and she is ready to marry me, me on the other hand i would love to marry her but not quite ready, i couldn't support her yet. so while we are away we call and talk for hours on the phone long distance and all. few months pass and i know that i cannot marry her until lets say five more years, money and career wise, so i tell her i cant love her. why i said that i don't know. i broke her heart cuz she thought i would not love her not that i can not. a month later without any calling between us i find out that the ran away from home and married some other guy. after hours of calling i get a number and reach her because no one knows where she is. i dont know what to say because as soon as i hear her voice i am breath less. so i ask her if she is happy because i believe i am the reason she did what she did in running away from her home. she sounds happy and revengeful in her answer and gets back at me in saying yes. i miss her like mad. i can travel half around the world to go after her but do you think she will take me back? Yeah im mad at her for doing what she did b/c i still love her and want to marry her. obviously too late but should i try and take her away from the other guy and would she even come with me? is it just the male ego in feeling guilty that i lost her to someone else that i love her more. i feel that if some other guy touches her i do not want her back. my heart still loves her but my head does not want her back. if i was to see her again face to face i would probably take her back. this is both of our first time ever by the way. neither she nor i have been with any one else. its hard to let her go what should i do?

2 AnswersSingles & Dating1 decade ago
• ### does she love me? long story sorry?

it started during childhood. both of us were around 4 or 5 years old and i didn't know better because i was too young. i would run around telling her mom and dad that i loved her and that i would marry her and that her dad was my father in law and her mom was my mother in law. i was only 4 or 5 i was too young to understand what that really meant. me and her live in two different worlds. she lives half way around the world in a poverty filled country which is my birth place. so ten years after i leave her and live in america we decide to go back to my birth place. funny we meet and all memories come rushing back. i am so shy to see her for the first time and she, i dont know how she felt actually for the first day meeting me again, but she did not seem normal, most likely shy as well. day 2 lights go out and we kiss like crazy. of course of all the people there, no one notices us in a room, but keep in mind just about everyone there knew that we were crazy for each other when we were little. but no one wanted us together i think. next few days we are at at again madly in love and kissing, nothing too physical. probably sixth day we are alone and lights out in bed but her mom knocks on her door. Sad part is that i am leaving her the next morning and heading for america. after ten years we meet and already we separate. we are both eighteen and she is ready to marry me, me on the other hand i would love to marry her but not quite ready, i couldn't support her yet. so while we are away we call and talk for hours on the phone long distance and all. few months pass and i know that i cannot marry her until lets say five more years, money and career wise, so i tell her i cant love her. why i said that i don't know. i broke her heart cuz she thought i would not love her not that i can not. a month later without any calling between us i find out that the ran away from home and married some other guy. after hours of calling i get a number and reach her because no one knows where she is. i dont know what to say because as soon as i hear her voice i am breath less. so i ask her if she is happy because i believe i am the reason she did what she did in running away from her home. she sounds happy and revengeful in her answer and gets back at me in saying yes. i miss her like mad. i can travel half around the world to go after her but do you think she will take me back? Yeah im mad at her for doing what she did b/c i still love her and want to marry her. obviously too late but should i try and take her away from the other guy and would she even come with me? is it just the male ego in feeling guilty that i lost her to someone else that i love her more. i feel that if some other guy touches her i do not want her back. my heart still loves her but my head does not want her back. if i was to see her again face to face i would probably take her back. this is both of our first time ever by the way. neither she nor i have been with any one else. its hard to let her go what should i do?

5 AnswersSingles & Dating1 decade ago
• ### childhood lovers should we reunite? please bear with me.?

it started during childhood. both of us were around 4 or 5 years old and i didn't know better because i was too young. i would run around telling her mom and dad that i loved her and that i would marry her and that her dad was my father in law and her mom was my mother in law. i was only 4 or 5 i was too young to understand what that really meant. me and her live in two different worlds. she lives half way around the world in a poverty filled country which is my birth place. so ten years after i leave her and live in america we decide to go back to my birth place. funny we meet and all memories come rushing back. i am so shy to see her for the first time and she, i dont know how she felt actually for the first day meeting me again, but she did not seem normal, most likely shy as well. day 2 lights go out and we kiss like crazy. of course of all the people there, no one notices us in a room, but keep in mind just about everyone there knew that we were crazy for each other when we were little. but no one wanted us together i think. next few days we are at at again madly in love and kissing, nothing too physical. probably sixth day we are alone and lights out in bed but her mom knocks on her door. Sad part is that i am leaving her the next morning and heading for america. after ten years we meet and already we separate. we are both eighteen and she is ready to marry me, me on the other hand i would love to marry her but not quite ready, i couldn't support her yet. so while we are away we call and talk for hours on the phone long distance and all. few months pass and i know that i cannot marry her until lets say five more years, money and career wise, so i tell her i cant love her. why i said that i don't know. i broke her heart cuz she thought i would not love her not that i can not. a month later without any calling between us i find out that the ran away from home and married some other guy. after hours of calling i get a number and reach her because no one knows where she is. i dont know what to say because as soon as i hear her voice i am breath less. so i ask her if she is happy because i believe i am the reason she did what she did in running away from her home. she sounds happy and revengeful in her answer and gets back at me in saying yes. i miss her like mad. i can travel half around the world to go after her but do you think she will take me back? Yeah im mad at her for doing what she did b/c i still love her and want to marry her. obviously too late but should i try and take her away from the other guy and would she even come with me? is it just the male ego in feeling guilty that i lost her to someone else that i love her more. i feel that if some other guy touches her i do not want her back. my heart still loves her but my head does not want her back. if i was to see her again face to face i would probably take her back. its hard to let her go what should i do?

6 AnswersSingles & Dating1 decade ago
• ### chase after childhood love?

it started during childhood. both of us were around 4 or 5 years old and i didn't know better because i was too young. i would run around telling her mom and dad that i loved her and that i would marry her and that her dad was my father in law and her mom was my mother in law. i was only 4 or 5 i was too young to understand what that really meant. me and her live in two different worlds. she lives half way around the world in a poverty filled country which is my birth place. so ten years after i leave her and live in america we decide to go back to my birth place. funny we meet and all memories come rushing back. i am so shy to see her for the first time and she, i dont know how she felt actually for the first day meeting me again, but she did not seem normal, most likely shy as well. day 2 lights go out and we kiss like crazy. of course of all the people there, no one notices us in a room, but keep in mind just about everyone there knew that we were crazy for each other when we were little. but no one wanted us together i think. next few days we are at at again madly in love and kissing, nothing too physical. probably sixth day we are alone and lights out in bed but her mom knocks on her door. Sad part is that i am leaving her the next morning and heading for america. after ten years we meet and already we separate. we are both eighteen and she is ready to marry me, me on the other hand i would love to marry her but not quite ready, i couldn't support her yet. so while we are away we call and talk for hours on the phone long distance and all. few months pass and i know that i cannot marry her until lets say five more years, money and career wise, so i tell her i cant love her. why i said that i don't know. i broke her heart cuz she thought i would not love her not that i can not. a month later without any calling between us i find out that the ran away from home and married some other guy. after hours of calling i get a number and reach her because no one knows where she is. i dont know what to say because as soon as i hear her voice i am breath less. so i ask her if she is happy because i believe i am the reason she did what she did in running away from her home. she sounds happy and revengeful in her answer and gets back at me in saying yes. i miss her like mad. i can travel half around the world to go after her but do you think she will take me back? Yeah im mad at her for doing what she did b/c i still love her and want to marry her. obviously too late but should i try and take her away from the other guy and would she even come with me? is it just the male ego in feeling guilty that i lost her to someone else that i love her more. i feel that if some other guy touches her i do not want her back. my heart still loves her but my head does not want her back. if i was to see her again face to face i would probably take her back. its hard to let her go what should i do?

1 AnswerSingles & Dating1 decade ago
• ### chemistry molar mass?

The numbers are not really important.

A sample of an unknown substance weighing XXX g was dissolved in YYY mL of cyclohexane. The density of cyclohexane is 0.779 g/mL, and its KF is 20.5 ºC/molal. The freezing point depression was ZZZ ºC.

What would be the effect on the calculated value of the molar mass if some of the solvent evaporated after the solute was added?

Please Explain.

1 AnswerChemistry1 decade ago
• ### wavelengths of light hydrogen atom?

Assume that a hydrogen atom's electron has been excited to the n = 8 level. How many wavelengths of light can be emitted as this excited atom loses energy?

1 AnswerChemistry1 decade ago
• ### light and wavelength emitted?

Calculate the longest and shortest wavelengths of light emitted by electrons in the hydrogen atom that begin in the n = 9 state and then fall to states with smaller values of n.

Longest wavelength = m

Shortest wavelength = m

1 AnswerChemistry1 decade ago
• ### wavelengths of light emitted?

Calculate the longest and shortest wavelengths of light emitted by electrons in the hydrogen atom that begin in the n = 9 state and then fall to states with smaller values of n.

Longest wavelength =

Shortest wavelength =

2 AnswersPhysics1 decade ago
• ### mole of electron and energy?

It takes 534 kJ to remove one mole of electrons from the atoms at the surface of a solid metal.

How much energy does it take to remove a single electron from an atom at the surface of this solid metal?

2 AnswersChemistry1 decade ago
• ### chemistry calculating energy?

An electron microscope employs a beam of electrons to obtain an image of an object. What energy must be imparted to each electron of the beam to obtain a wavelength of 10.6 pm? Obtain the energy in electron volts (eV) (1 eV = 1.602 10-19 J).

WHY IS IT NOT 1.18e4?

1 AnswerChemistry1 decade ago