Homework Help - December 2007

please respond quickly!!

2007-12-04 15:17:04 · 2 answers · asked by Princess AE 2

im writing a paper

2007-12-04 15:16:33 · 7 answers · asked by comma e 1

if a line of negative charges are lined up opposite a line of positive charges like this (like in a capacitor)
----------
++++++

How will the electric field be like then?

2007-12-04 15:15:05 · 2 answers · asked by To-the-Stars 4

note: the research paper must be 7 pages long

2007-12-04 15:13:20 · 4 answers · asked by Brian 3

hey im writing my exam tomorow and i need to explain how scrooge turns into a good character from a bad on!! please help me its tomrorow

2007-12-04 15:12:04 · 27 answers · asked by jdogg 1

Please give me some ideas and some leading factors to support your ideas and thoughts.

2007-12-04 14:58:04 · 2 answers · asked by anonymous 1

1. A total of 54.0 cal of heat are absorbed as 58.3 g of lead is heated from 12.0° C to 42.0° C. From these data, what is the specific heat of lead?



2. A 25.0 g block of rhenium metal (specific heat = 0.0329 cal/ g° C) is heated from 25.0° C to 88.2° C. How much energy is required to heat the block of rhenium?



3. The specific heat of ethanol is 2.46 J/g oC. Find the heat required to raise the temperature of 193 g of ethanol from 19oC to 35oC.


4. A sample of mercury metal is heated from 25.5° C to 52.5° C. It took 187 cal of heat to make this temperature change. What mass of mercury was in the sample? The specific heat of mercury is 0.033 cal/ g° C




Thanks everyone!

2007-12-04 14:57:53 · 2 answers · asked by ♥idk♥ 1

I tried drawing a diagram, rearranging equations, and reading the textbook, but I can't figure out how to do this problem. I've done all the other questions on my homework (though half of them are most likely wrong), but this one makes no sense. Can anyone help?

A person fishing hooks a 2 kg fish on a line that can only sustain a maximum 38 N of force before breaking. At one point while the person is reeling in the fish, it fights back with a force of 40 N. What is the minimum acceleration with which you must play out the line in order to keep it from breaking?

2007-12-04 14:57:07 · 1 answers · asked by moonfreak♦ 5

PLEASE RESPOND QUICKLY!!!!
Thanks!

2007-12-04 14:51:37 · 7 answers · asked by Princess AE 2

A block of aluminum weighing 140.0 g is cooled from 98.4° C to 62.2° C with the release of 1080 cal of heat. From these data, calculate the specific heat of aluminum

2007-12-04 14:50:41 · 1 answers · asked by ♥idk♥ 1

his 2 bros mowed the rest of the lawn



1 ) how mcuh did warrne's dad DID NOT mowed?
2 ) what is the total fraction of the lawn did warren mowed?
3) what is the fraction of the lawn that each of warren's brother mowed ( he has 2 bros )

PLEASE HELPP! IT'S ON MY MATH TEST TMWW

2007-12-04 13:42:27 · 4 answers · asked by kalee 2

elephants'
Mrs. Schaake's
grandfather's
family's
tigers'

2007-12-04 13:40:39 · 14 answers · asked by Anonymous

please help i need today

2007-12-04 13:35:46 · 5 answers · asked by jonathan77345 2

We are watching Supersize Me in class. The people speak really fast. and I do not catch everything they say. I was wondering you can help me start my essay. Please and Thank you

2007-12-04 13:22:40 · 6 answers · asked by seeleeree 3

2007-12-04 13:16:14 · 3 answers · asked by william y 1

integrity
honesty
reliability
loylaty
respect
tolerane
acceptance
non-violence
courtesy
responsibility
duty
accountability
self control
fairness
justice
caring
concern
charity

and

citizenship

2007-12-04 13:06:03 · 3 answers · asked by Anonymous

the question is:

A grocer mixes pecans priced at $4.50 per pound with almonds priced at $5.25 per pound. How many pounds of each type of nut should he use to have a total mixture of 14 pounds priced at $4.80 per pound?


i set up the equations as:
x=pecans, y=almonds
x+y=14
and
4.50x+5.25y=4.80

i tried substituting and graphing but i can't get the right answer...

2007-12-04 13:01:39 · 2 answers · asked by ddcb09 2

this is for a poem and i can't think of anything

2007-12-04 13:00:25 · 2 answers · asked by cindy n 2

i need some help with my english research paper...i am doing organ and body donation and i cant find a good thesis statment...can anyone helpme plZ???

2007-12-04 12:16:23 · 4 answers · asked by Anonymous

heyy if you can just rea over this and tell me if it's ok for a 1st draft for and English 9 honors class.
please && thank you.

Why have Hope?

“The Grand essentials of happiness are: something to do, something to love, and something to hope for.” -Allan K. Chalmers

Why do we hope? We use it almost everyday. Whether it’s getting a good grade on a test, getting to a destination safely, or not getting yelled at. You are always going to hope for something in your life.
Hope is of the Old English origin. Meaning expectation; belief.
Hope is believing anything can happen. Your hope is like confidence is ways. It can boost up your mood when you feel something bad is going to happen.

2007-12-04 12:02:48 · 2 answers · asked by Anonymous

2007-12-04 11:47:22 · 14 answers · asked by Anonymous

i need help with this question....

Find the equation of the parabola that satisfies the conditions.

The Parabola has zeroes at -2 and 6. It passes through the point (5,3)

2007-12-04 11:43:45 · 1 answers · asked by Fishsh H 1

the question is:
2 angles r such that the ratio of the measures of their complements is 3:2, while the ratio of the measures of their supplements is 9:8 find the measure of each of the original angles

Please help me & tell me how you got the answer

thanks

2007-12-04 11:40:32 · 1 answers · asked by Pavan J 2

it says
Solve each equation symbolically fir x. Use another method to verify your solution.

1. 8-13 / x+5 = 2

2. 2(3-x) / 4 - 8 = -7.75

3. 11 + 6(x+5) / 9 = 42

2007-12-04 11:40:25 · 1 answers · asked by dizzy12k 1

how would i solve and plot 2y+x=6

2007-12-04 11:32:47 · 1 answers · asked by Anonymous

what is 80% of 45?

2007-12-04 11:32:13 · 5 answers · asked by cyril_oreily 1

I was trying to solve a question and couldn't find the answer. Can someone please tell me where I am going wrong?

Question:
Water is leaking out of an inverted conical tank at a rate of 10000cm^3/min at the same time water is being pumped into the tank at a constant rate. The tank has height of 6m and the diameter at the top is 4m. If the water level is rising at a rate of 20cm/min when the height of the water is 2m, find the rate at which water is being pumped into the tank.

My answer:
h/6=r/2
r=h/3

v=(1/3)pi*r^2*h
v=(1/3)pi(h^3/9)

dv/dt = (pi*h^2)/9 * dh/dt
dv/dt = [pi* 40000 * 20] / 9
dv/dt=279252 cm^3/min

Can someone tell me where I am going wrong? Also, please do it using the same method and not the tan-vertex one.

IU

2007-12-04 11:27:10 · 0 answers · asked by IU 1

i have to write an essay on what we need to fix in our city and i cant think of any and i was thinking, whats wrong with them is probably wrong with us too

2007-12-04 11:10:08 · 1 answers · asked by Always Falling 2

2007-12-04 10:36:15 · 2 answers · asked by Cicipris300 1

TO HUMAN BEINGS & OUR PLANET

2007-12-04 10:31:01 · 6 answers · asked by Anonymous