# Jenna

### Find the current through the resistor b.?

I've already figured out how to find the current through resistor a, but I can't figure it out for resistor b, and I really need that part to finish the rest of the problem. please explain!! thank you!

1 AnswerPhysics3 years ago### The aluminum wire in a high-voltage transmission line is 2.7 cm in diameter. It is designed to carry a current of 1100 A.?

The aluminum wire in a high-voltage transmission line is 2.7 cm in diameter. It is designed to carry a current of 1100 A.

What is the voltage drop across a 12-km-long segment of this power line? Please explain.

1 AnswerPhysics3 years ago### What is the voltage drop across a 12-km-long segment of this power line?

The aluminum wire in a high-voltage transmission line is 2.7 cm in diameter. It is designed to carry a current of 1100 A. What is the voltage drop across a 12-km-long segment of this power line? Please explain.

1 AnswerPhysics3 years ago### How much charge is on each plate?

A 3.0 cm × 3.0 cm parallel-plate capacitor has a 3.0 mm spacing. The electric field strength inside the capacitor is 1.4×10^5 V/m.

How much charge is on each plate?

q1, q2 = C

please explain.

1 AnswerPhysics4 years ago### please help with calculus?

can someone please help with these two problems...I have NO idea what to do.

1. compute the arc length of the curve f(x)=3/4x + ln x + 1/4 ln (1+x), x ∈ [1,4]

2. compute the length of the line segment of y=3x+5, x ∈ [1,3]

1 AnswerMathematics8 years ago### help with calculus question?

In the following identity 2x+1/x^3-x^2-x+1= A/x+1 + B/x-1 + C/(x-1)^2 solve for constants A, B, & C.

2 AnswersMathematics8 years ago### quick help with calculus homework?

can someone please check my answers and make sure I got these right, because I'm pretty sure they're right but I really don't want to get any wrong.

1. What is the value of d/dx [f^-1(x)] when x= 2, given that f(x)=x^3+x and f^-1(2)=1?

my answer: 1/4

2.What is the value of d/dx [f^-1(x)] when x= -2, given that f(x)= ³√(1-x) and f^-1(-2)=9?

my answer: -12

3. What is the value of d/dx [f^-1(x)] when x= 0, given that f(x)=x/(1-x) and f^-1(0)=0?

my answer: 1

4. What is the value of d/dx [f^-1(x)] when x= π, given that f(x)=2x+sin x cos x and f^-1(π)=π/2?

my answer: 1

5. What is the value of d/dx [f^-1(x)] when x= 2, given that f(x)=(2-x^2)/(1+x) and f^-1(2)=0?

my answer: -1/2

2 AnswersMathematics8 years ago### True or False: Calculus?

True or False: Every function of the form f(x)= c-x is its own inverse, for and choice of c.

I don't even understand what this is asking so can someone please explain why it is true or false?

3 AnswersMathematics8 years ago### help with this "work" problem please?

A cylindrical tank shown is half full of a certain fluid that weighs 12 pounds per cubic foot. Find the work done in pumping the fluid out of the tank from the top outlet

http://i40.tinypic.com/xeotl.jpg

I know the equation you would use would be this: http://i41.tinypic.com/2dqkgus.jpg but what goes in the equation for (a) and (b) and f(x)?

1 AnswerHomework Help8 years ago### help with calculus question, volume of cross-sections?

What is the volume of the solid whose cross-sections are equilateral triangles perpendicular to the x-axis and with a base on the region bounded by curves y= x, y= -x, and x= 1.

Please explain, because I really need to know how to do this for the rest of my homework.

2 AnswersMathematics8 years ago### Should I use dx or dy for this calculus problem?

How do you know when to use dx or dy when doing a problem like this...

Find the volume of the solid of revolution obtained by rotating the region bounded by x = 1, x = 2, y = x^3, and y = 5x + 2 about the y-axis.

should the problem be set up like this

1. http://i44.tinypic.com/2mhfvgp.jpg or this 2. http://i44.tinypic.com/2ziot1s.jpg

because I've tried doing the problem both ways and I'm not getting any of the answers on my homework so I think I might just be setting it up wrong.

the answers are:

A. 2/5π

B. 31/5π

C. π/15

D. 254/15π

1 AnswerHomework Help8 years ago### Need help with calculus homework?

Find the volume of the solid of revolution obtained by rotating the region bounded by y = x + 1 and y = x^2 + 1 about the x-axis. Could you also explain so I understand how to do the rest of my homework.

A. 7π/30

B. 7π/5

C. 7π/15

D. π/15

1 AnswerHomework Help8 years ago### Need Help With Finding the Volume of the Solid of Revolution?

What is the volume of the solid of revolution obtained by rotating the region bounded by y=√x and y=x^2 around the y-axis?

Every time I try this problem I get something like π(x-x^4) and that is not one of the choices on my homework, so can someone please help? :)

1 AnswerHomework Help9 years ago### Is a USB 3.0 cord compatible with a USB 2.0 port?

I'm looking at buying a Seagate FreeAgent GoFlex 1 TB USB 3.0 Ultra-Portable External Hard Drive and I was wondering if this would work since my USB ports are 2.0. If it does work would the 3.0 cord even make a difference, like would it be faster than if it was a 2.0 cord?

2 AnswersOther - Hardware9 years ago### I need some good songs for a tribute?

My favorite show (smallville) is ending after 10 years and I want to make a tribute video for it, but I can't think of any songs. I want a song that is emotional but happy and sad at the same time. please help. :)

3 AnswersRock and Pop9 years ago### help with analytic trig homework?

can anyone please help with any of these problems?

1. simplify cot^2x(sin^2x)

2. simplify tan^2x csc^2x-tan^2x

3. simplify (sec x-tan x)^2

4. verify 1/tan x csc x sin x=cot x

5. verify cos^3xsin^2x=(sin^2x-sin^4x)cos x

6. solve 4 cos x=1+2 cos x

7. solve 1/2sec x-1=0

8. find all solutions in the interval (0, 2π). 2 sin^2x-3 sin x=-1

9. find the exact values of the sin, cos, and tan of the angle by using sum or difference formula. 345degrees=300degrees=45degrees

Please help! :D

2 AnswersMathematics10 years ago### My taskbar just disappeared?

my start button is still there but where the tasbar is suppose to be it's just all black, I checked and it's not on auto-hide, I don't know what to do. Please Help me.

3 AnswersDesktops1 decade ago### How to make a pamphlet on endangered species?

Okay so for biology I have to do a project on a endangered animal and mine is the asian leopard cat. here's a picture if you want to see it: http://www.dicapriobengals.com/Asian_Lleopard_cat_...

Anyways so I have to make a pamphlet the uses as much factual evidence and information as possible and suggestions as to what one could do to help the animal. So my question is does anybody know how to create a pamphlet for that. Like what should I have on each side of the pamphlet. Also what kind of information should I use. If anybody answers this question and gives me any information with it, can you please send me a link to the website you used, because I have to make a Works Cited page with it.

3 AnswersHomework Help1 decade ago### solving formulas for one variable?

okay so i have to do this math homework but i don't know how. can anyone help? here is the problem: V=1/3πr^2h i have to solve for h. please help!!

2 AnswersHomework Help1 decade ago### laptop help with running the sims 3?

okay i am looking into buying a new laptop and i want to know if this one can run sims 3. can anyone help me please?

2 AnswersLaptops & Notebooks1 decade ago