Questions Asked on
May 13, 2007

Physics Thanks
Please help... Let g be the acceleration due to gravity at the surface of a planet of radius R. Which of the following is a dimensionally correct formula for the minimum kinetic energy K that a projectile of mass m must have at the planet's surface if the
asked by Kelly 
mat 116/algebra
A cylinder has a radius of 5 in. If the volume of the cylinder is 250ƒà in.3, what is the height of the cylinder? [Hint: The volume of a cylinder is given by V = ƒàr2h.] I think I wrote it wrong the first time. The volume of a cylinder is pi r^2 h.
asked by Dee 
MATH!!!
To measure the length of a hiking trail, a worker uses a device with a 2foot diameter wheel that counts the number of revolutions of wheel makes. If the device reads 1,100.5 revolutions at the end of the trail, how many miles long is the trail, to the
asked by megan 
Government
What are some reasons why the President was given almost unlimited military powers? What are some possible positive and negative effects resulting from the scope of the President's military power? The effective conduct of a war requires a strict obediance
asked by Nichole 
Algebra2
Find the polynomials roots to each of the following problems: #1) x^2+3x+1 #2) x^2+4x+3=0 #3) 2x^2+4x5 #3 is not an equation. Dod you omit "= 0" at the end? #2 can be factored into (x+1)(x+3) = 0, so the roots are x=1 and 3. #1 Use the quadratic
asked by Haylee 
Electrochem
An electrolytic cell produces aluminum from Al2O3 at the rate of ten kilograms a day. Assuming a yield of 100% a) how many moles of electrons must pass through the cell in one day? b) how many amperes are passing through the cell? c) how many moles of
asked by Keith 
Physics
In a machine, an ideal fluid with a density of 0.9*10^3 kg/m^3 and a pressure of 1.3*10^5 Pa flows at a velocity of 6.0 m/s through a level tube with a readius of 0.5 cm. This tube connects to a level tube that has a radius of 1.5 cm. How fast does the
asked by Anonymous 
environmental science
I am having trouble with this assignment. Please help! Larvae of a certain insect are found in pond but not in pond B. Design a controlled experiment that would help explain the observed distributio of these insect larvae. Be sure to include the following
asked by Anonymous 
Government
Suppose major officeholders from one particular party are not performing well, and this party is not monitoring these officeholders. In what ways could this situation affect the party as a whole? In the United States, the popularity of the poorly
asked by Nichole 
english
If you are writing a formal paper, how do you write 1600s (as in the century)? Is there an apostrophe: 1600's? Thank you for using the Jiskha Homework Help Forum. This is what the MLA guide says concerning dates: Full dates when written in the text may be
asked by Annette 
Physics HELP
1.If a particle moves in a plane so that its position is described by the functions x=A*cos(wT) and y=A*sin(wT), the particle is ( wangular velocity, Tperiod) A) moving with constant speed along a circle B) moving with a varying speed along a circle
asked by Kelly 
Physics Work and Energy, Momentum
Let g be the acceleration due to gravity at the surface of a planet of radius R. Which of the following is a dimensionally correct formula for the minimum kinetic energy K that a projectile of mass m must have at the planet's surface if the projectile is
asked by Kelly 
Reply to grant about a regression problem
This is a reply to the question posted here http://www.jiskha.com/display.cgi?id=1178989522 As I explained there, you can find the parameters by defining: x1 = Sin(0.49 t) x2 = Cos(0.49 t) and treat this as an ordinary linear regression problem. If we
asked by Count Iblis 
Business Management
I have just came across the words productled and marketled and have no idea what they mean, could someone please give me a detailed explanation thanks Thank you for using the Jiskha Homework Help Forum. Look at "marketled" as "what the customer wants."
asked by Louise 
algebra
The length of a rectangular garden is 5 ft less than 3 times its width. If the perimeter of the garden is 22 ft, find the dimensions of the garden. I will start you off with... let the width be w, then the length is 3w  5 I am pretty sure you can form the
asked by Dee 
algebra
Can someone please help me with these problems? Please and thank you. 1)Solve the equation: (1/x)+[x/(x+2)]=1 2)Simplify the complex fraction: 3(3/4)  (1/2)(1/4) (1/x)+ [x/(x+2)] = 1 Convert left side to the sum of fractional terms with common
asked by Lydia 
English
I need help thinking of something to put on my poster board for an archetypal journey project over Their Eyes Were Watching God. I want a creative poster with something symbolic on it that represents the novel. If you read it you will know how and why she
asked by Anonymous 
Biology
Joe has freckles but Sue does not. Both have attached earlobes. Some of their children do not have freckles. Freckles and earlobes are inherited independently. What is Joe's genotype? What is Sue's genotype? What is the chance that their next child will
asked by Matt 
science geology
explain how a crosscutting feature is always younger than the rock layers it cuts across? Wouldn't it require the underlaying rock to be formed well before it was crosscut?
asked by megan 
physics
A car is behind a truck going 23.0 m/s on the highway. The driver looks for an opportunity to pass, guessing that his car can accelerate at 2.2 m/s2, and he gauges that he has to cover the 24.0 m length of the truck, plus 10 m clear room at the rear of the
asked by micole 
maths
You are asked to write a program for the course calculator to help a fellow student practise changing the subject of a formula. The formula will be of the type Y = AX + B, with different integer values of A and B, and the student is to rearrange the
asked by kat 
algebra
if a+b=1 and a squared + b squared=2 what does a to the 3rd + b to the 3rd equal? If b is 1, b cubed is one. That would work for the first half, but doesn't extend to a to the 3rd+b to the 3rd and what weould 2 squard be? Thank you so much for helping Are
asked by janice 
algebra
I have no clue what to do here can you tell me how to figure this? If y varies directly with x, and y = 500 when x = 200, find the constant of variation k. Whenever you have a statement such as "....y varies directly with x..." you can write it as an
asked by stressed 
chemistry
Why is a solution of KNO3 neutral and not acidic? K^+ doesn't hydrolyze (H2O has a stronger attraction for the OH than K^+) and NO3^ doesn't hydrolyze (H2O is a stronger base than NO3^ meaning that H2O will not donate a proton to NO3^). Looking at it
asked by Fiona 
Algebra
I get facturing but it takes me forever to guess and check and then 30 minutes later to get it. Am I doing this right? I need help with this problem 8x^234x+35 Here are a couple decent sites:
asked by Avalon 
MATH!!
A fish tank with a rectangular base has a volume of 3,360 cubic inches. The length and width of the tank are 14 inches and 12 inches, respectivily. Find the height, in inches, of the tank? V=LxWxH 3360=14x12xH 3360=168xH H=3360/168 H=2O 14x12=168
asked by megan 
physics
Driving along a crowded freeway, you notice that it takes a time t to go from one mile marker to the next. When you increase your speed by 4.0 mi/h, the time to go one mile decreases by 11 s. What was your original speed? I used the equation V=d/t; I
asked by micole 
Math
When you have 4xy^3 * 2x^2y * 5xy^2 Would you add the first number and then add the powers? 11x^4y^6 ??? Thank you multiply, multiply, multiply 4*2*5 * x1+2+1 y3+1+2 You got the powers right, but the coefficent is 40
asked by Erin 
math
How do you divide, and multiply decimals??? http://www.eduplace.com/math/mw/background/5/09/
asked by DeAndrea 
Exam
Hello I have exams coming up and I was wondering if any of you guys know where I can get some practice exam papers or questions that I can do or download from the internet. I am in year 11, high school, and I have exam on geometry and trigonometry, intro
asked by Jarin 
Algebra
Rewrite the middle term as the sum of two terms and then factor by grouping. x2 – 2x – 63 Factor. 9x(x – 7y) – 6(x – 7y) Factor completely. x^2+8x+15 Rewrite the middle term as the sum of two terms and then factor completely.
asked by Jakhari 
Math
Rewrite the middle term as the sum of two terms and then factor completely. x2 + 19x + 90 Factor completely. ax – ay + x2 – xy Rewrite the middle term as the sum of two terms and then factor by grouping. x2 + 4x – 12 Complete the following statement.
asked by Frostie 
algebra
The equation y = 6x – 50 describes the amount of money a class of students might earn from candy bar sales. What are the slope and yintercept of this line? In the general linear equation y = mx + b, m is the slope and b is the yintercept. The y
asked by stressed 
algebra
Write the equation of the line with xintercept (–8, 0) and undefined slope. would this by y=8x?????????? You're close! The only line with an undefined slope is a vertical line. Therefore the equation of a vertical line passing through (8, 0) is: x =
asked by stressed 
algebra
Write the equation of the line that passes through point (5, 4) with a slope of 0. would this be x=5 then? no x=5 is the equation of the vertical line passing through (5,4) Any horizontal line, (slope=0), has an equation of the form y = b notice that this
asked by stressed 
Engineering
I need help solving the following simultaneous equations, for the values of Vo and a: 1.4 = Vo e^32a 4 = Vo e^6a I've never come across simultaneous equations like this (e is the base of natural logarithms, so perhaps taking logs of both sides might
asked by Stuart 
maths equations
could you please help me on this equation r = sx2/2t im really stuck Your nonuse of parenthesis makes in difficult to know what the equation is. What are you trying to do with the equation? sorry im trying to make x the subject divide each side by s r/s=
asked by bex 
Algebra
I spend hours trying to factor an equation! I need help trying to factor 2x^2+19x+24 Hours? (2x+3)(x+8)
asked by Avalon 
maths
which solution is the correct for this equation 4x^3  3x = 15 1.8, 1.7, 1.6, 1.5, 1.5, 1.6, 1.7, 1.8 ?? What is your thinking, and why? Have you considered graphing y= 4x^3 3x 15 ? Kat, what level of study are you at. This is an equation which can
asked by kat 
word pronunciation
I have to do a presentation and I just wanted to verify that the word heroine (female hero) is pronounced hairohin, like the drug. Yes, they have the same pronunciation. There is something ironic about that. Once they get into your heart, you can't get
asked by Anonymous 
MATH!
graph the following system of inequalities on the accompanying set of axes and label the solution S. y>x4 i got this one. but how would you graph y+x> or = to 2. How do you find the slope and y intercept? Change it to read (subtract x from both sides y>x
asked by megan 
Mat 116/algebra
A cylinder has a radius of 5 in. If the volume of the cylinder is 250 ¦Ðr¡¼in¡½^3, what is the height of the cylinder? Volume cylinder is AreaBase*height where area of the base is PI*r^2 Volume=PI*r^2 * h solve for h.
asked by Dee 
environmental science
Describe and compare total resource use per capita in developed and developing countries. I know that resource use per capita in developed nation must be much larger than that of developing countries but I don't know how much larger. Please help! Check
asked by Anonymous 
Biology
Kim who is heterozygus for polydactyl (6 fingers and toes) marries Tony who is homozygous normal (5 fingers and toes). What is Kim's genotype? What is Tony's genotype? What is the chance of having children with 6 fingers? Please include the Punnett Square.
asked by Matt 
physics
A ball is thrown upward from the top of a 27.0mtall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 31.2 m from the building. What must be the average speed of the person if he is to
asked by micole 
Science Question for Homework
This weekend I have to write a paper on ....?
asked by Joey 
Science Question Take 2
Sorry, my last post got cut off. Here it is again: For my science homework this weekend, I have to write a paper on how crystals absorb and focus the etheric energies of the sun and how they can be used by adepts for the good of mankind. I am having
asked by Joey 
reward & supreme ordeal eyes were watching god
I am doing a project for the novel Their Eyes Were Watching God and I have to do the archetypal steps in order. In the archetypal journey, the supreme ordeal comes before the reward but I am thinking that in this novel the reward comes before the supreme
asked by Anonymous 
chemistry
Write the equation for the reaction, if any, that occurs when each of the following experiments is performed under standard conditions. a) crystals of iodine are added to an aqueous solution of potassium bromide. b) liquid bromine is added to an aqueous
asked by Krystal 
environmental science
economic policies and practives affect society's progress toward achieving sustainable resource use. discuss one policy or practice that facilitates this progress, and one that impedes it. What about California's rebate system for buying/installing home
asked by Anonymous 
English
I desperately need to contact a publishing company for my new book. I am not sure how to go about doing that. And how would my draft get to whatever company? Would I just mail it or..........? Let me put it this way: does anyone know of a company that can
asked by brie 
math
if a=b=1 and a^+b^=2, then what does a cubed +b cubed equal??? ok I don't know if "ok" means that you answered your own question. If both a and b = 1, any power of either a or b will still be 1. I hope this helps. Thanks for asking.
asked by janice 
algebra
plot points (0,6) and (3,5) plot points (0,0) and (3,1) how do i graph Get some graph paper. Label the x and y axes. For (0,6), place a mark where x = 0 and y=6. Do simillarly for the other points.
asked by Anonymous 
social studies
what are the 3 causes of the holocaust? purificationHitler wanted to purify the world to be like Germans. He wanted pepple to have blond hair and blue eyes. He wanted to create the "perfect race." getting rid of political enemiesThe first people that
asked by taylor 
macro economics
calculate the following recessionary gap =$18 mps=.10 mpc=.90 I calculated the recessionary gap and I got 45,236 huh?? What do you want to calculate? and have you presented all the information needed to solve ? I need help with a hw question on
asked by gil 
Ethics 2
What can individuals do to promote tolerance and reduce prejudice in their towns and cities? You can start in your own school. One of the most segregated places in the country is the school cafeteria. You can sit with people who are different from you and
asked by Kelli Evans 
French for Brie
P.S. You may have been on for 3 hours but you post first of all 21/2 hours ago. I tried to find an earlier posting but found none. Please don't be too impatient with us as we are volunteers and not online 24/7.
asked by SraJMcGin 
Math
List the terms and coefficients. 8x3 – 4x2 + 3 Write using positive exponents only. b–2 Factor completely. 3(x – 2)2 – 3(x – 2) – 6 State which method should be applied as the first step for factoring the polynomial.
asked by Tomika 
Algebra
Factor completely. 6z3 – 27z2 + 12z State which method should be applied as the first step for factoring the polynomial.
asked by Monic 
Mat 116Algerba 1a
3(x +8) = 6 I keep getting it wrong. Help x+8 = 6/3  = 2 x = 6 compare the numbers 2.002 and 2.02 using an inequality. compare the numbers 2.002 and 2.02 using an inequality.it is 2 because there is no diferrence!
asked by Dee 
maths
Choose the two true statements from the following. a)if the AEI increases by 30% a year and the RPI increases by 11.0% in the same year, then real earnings have gone down by 8.0% b)a new baby’s parents are given £400 to invest for the baby, to be left
asked by sarah 
algebra
Write the equation of the line with slope –2 and yintercept (0, 0). Then how do i graph this? do i insert 2x 0y and then 2x 0y to make my graph?
asked by stressed 
Chemistry
If 500.0 mL of hydrogen are collected over water at 20.0 C and 99.3 kPa what will the volume of the dry gas be at STP?
asked by Christian 
algebra
Write the equation of the line passing through (–5, –6) and (5, –6). Is this wrote y=10+12 ?????? find the slope first. m= (6  (6)) / (5  (5)) = 0/10 = 0 y + 6 = 0(x+5) y= 6 well i was like way off on this thank you so much for sending me how
asked by stressed 
solar science
could you give me any ideas on the stages of chemical evolution that would need to occur towards the development of life and the timescales many thanks http://en.wikipedia.org/wiki/Origin_of_life
asked by bex