 Lv 130 points

# a81925487

Questions46
• ### 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]

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

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

• ### 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

• ### 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

• ### 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.

• ### 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.

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?

• ### what does the internet need?

what does the internet need. Please try to be specific

thanks

• ### what does the world need?

what does the world need?

what does the internet need?

• ### 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?

• ### 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?

• ### 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

• ### 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 =

• ### 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?