Friday
July 25, 2014

Posts by ethan


Total # Posts: 160

Physics
A unit of area often used in measuring land areas is the hectare, defined as 104 m2. An open-pit coal mine consumes 99 hectares of land, down to a depth of 28 m, each year. What volume of earth, in cubic kilometers, is removed in this time?

social studies
Which mountain range is at 43 degrees north and 0 degrees?

math
Books never written

Physics
When an object is thrown into the air, relate it's mechanical energy to kinetic and gravitational energy.

Physics
Describe situations where no work is done and situations where work would be done?

earth science
I need to draw a diagram showing delta, oxalate, tributary and meander. I also need to draw a diagram showing water table, zone of saturation, cone of depression, working well, dry well, aquitard, aquifer, spring, perched water

english
swag

algebra 2
how do i solve x^4-13^2+40?

6th grade - EARTH SCIENCE
no

chemistry
A precipitate of calcium phosphate is formed when aqueous solutions of sodium phosphate and excess calcium chloride are mixed. If 100.0 mL of 1.5 M sodium phosphate solution is the limiting reactant, how many grams of calcium phosphate can be expected?

English Essay Title
That sounds like a good title! Thanks!

English Essay Title
What would a good essay title be if I'm writing an essay about a character in a book who is torn between two conflicting forces?

Books
Thanks!

Books
Homework Help!!! (Books)? I have a homework assignment and I really need help. I'll be very thankful and pleased if anyone can help. Compare the Adventures of Huckleberry Finn to The Glass Castle mainly the characters and the challenges they face through out each book. I t...

English
What are some good intepretive discussion questions for the book This Boy's Life by Tobias Wolff

Math11U
I don't know the answer, but I know that in this particular question the plane is flying at an altitude of 9750 metres.( The q. is in Nelson Functions 11 pg.319 #8)

geometry
Find the volume of a rectangular solid with the following dimensions: 2ã3 cm x 7ã5 cm x 4ã6 cm.

calculus
Find the fourier series of F(x) = 1, -L<=x<0 = 0, 0<=<L f(x+2L) = f(x)

social studies
were the colonists'protest sucessful

6th grade
what is the industrial revolution

math
y+2x=3, y+2x=-4

grammar
Thank you.

grammar
Where is the adverb located in the following sentence? "Timothy was not so sure that he liked Ethan as much now that he was being mean to everyone."

algebra
How would I find three different quotients that equal 5 to the negative 7th

writing
how can i answer the question...SHOULD NUTRALIZED CITIZENS BE PRESIDENT?

Math
go

math 156
what number is between 0.1 and 0.24

chemisrty
I have no idea how to do this activity..can someone please help!? In this activity you will investigate how chemical reactions are limited by the amount of reactants present. You will be using paper clips to represent atoms. You can describe the quantities of reactants and pro...

science
For the reaction 2Na(s) + Cl(g) ¨2NaCl(s), how many grams of NaCl could be produced from 103.0 g of Na and 13.0 L of Cl (at STP)?

science
Which of the following would be the limiting reagent in the reaction shown below? There are 50 molecules of O2 and 50 molecules of H2. 2H2(g) + O2(g) ==> 2H2O(g)

science
what is the volume of water ? how do I describe this ?

5th grade
show me examples of dot arrays

pre algebra
- 2 + 5 = +3

Math word problem
This is all I was provided. I don't get it either.

Math word problem
you buy a bottle of juice for $1.00. The juice costs 90 cents more than the empty bottle. How much does the empty bottle cost? The answer is not 10 cents.

biology
what oganic molecules provised structure for hair, nail, bones/cartilage

Math
I don't know :-)

chemistry
Sodium phosphate, Na3PO4, reacts with HCl to form H3PO4 and NaCl. How many liters of 0.1 M HCl are required to react with 0.1 mole of sodium phosphate?

physics
force=(mass)(acceleration) what is the acceleration?

physics
A 4.9 g bullet leaves the muzzle of a rifle with a speed of 332 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.85 m long barrel of the rifle?

12th grade government/economics
what is the period of dominance of federalists

Precalculus
Oh sorry, haha thank you for correcting me and thank you for helping me out.

Precalculas
how do i find the inverse of f(x)= (3x+7)/(x-2)

Art
Where does clay come from?

Calculus
x(squared)+8x+17 if x < or = -4 Let f(x)= 2 if x= -4 -x(squared)-8x-15 if x > -4 Show that f(x) has a removable discontinuity at x=–4 and determine what value for f(–4) would make f(x) continuous at x=–4. Must redefine f(–4)=____

chemistry
so Fe did that... im getting confused because i to oxidize means to lose electrons that makes it more positive and then reduction is actually the addition of electrons

Calculus
What is the limit as x approaches -1 of x - 5 --------------------- 4x(squared)-6x+ 3

Calculus- limits
never mind it was 12

Calculus- limits
f(x) = x + 7 if x < or equal to 5 F(x) = 7 if x >5 what is the limit as x is approaching 5 from the left side????? I know that the limit as x approaches to 2 does not exist and that the limit as x is approaching 5 from the right side is 7

US history
1. Which of the following justifications was not one of the proslavery arguments? a. Slavery offered a secure and certain life for slaves. b. Slavery involved only a very small number of slaves. c. Slavery assured an adequate labor supply for planters. d. Slavery influenced th...

Magnets-Physics
magnets attrac each other

Economics
Question on study guide that i don't get. Bill O’Really of OX News observed that poultry (chicken and turkey) consumption in the US increased dramatically over the 2000 to 2006 period. This he discovered was due to the fact that consumers, being more health conscious,...

Macro Econ
Which of the following argues in favor of using Gross Domestic Product as a measure of economic well-being?

pre-cal
Simplify the given expression........? (2sin2x)(cos6x) sin 2x and cos 6x can be expressed as a series of terms that involve sin x or cos x only, but the end result is not a simplification. sin 2x = 2 sinx cosx cos 6x = 32 cos^6 x -48 cos^4 x + 18 cos^2 x - 1 I assume you are n...

pre-cal
find all solutions in interval [0,2pi] tan²x = -3/2 secx This question may look tricky, but its actually quite simple. First: rearrange the pythagorean identity tan²x+1=sin²x so that it reads tan²x=sin²x-1 Then replace the tan²x in the original pr...

pre-cal
Find the EXACT VALUE of csc(-11pi/12) If that angle is in radians, it is easy. A full circle has 2PI radians...or 360 deg so 22PI/24 is the same as 22*15 deg, or -30 deg. The 30 deg triangle is well known. The sin is 1/2, so the csc is 2 Figure out the sign of the csc from wha...

algebra
given two containers, one holding 4 gal. and the other holding 3 gal. how does one measure out two gal.? Fill the 3 gal, pour it in the 4 gal. Fill the 3 gal, then pout it int the 4 gal until filled. How much is left in the 3 gal? thank you bobpursley!!!!!!!!!!!

Finance/Math
1. Present Values. Compute the present value of a $100 cash flow for the following combinations of discount rates and times. a. r = 8 percent. t = 10 years b. r = 8 percent. t = 20 years c. r = 4 percent. t = 10 years d. r = 4 percent. t = 20 years 2. Future Values: Compute th...

English
help me pls.. How the puritans were different from the people of the Revolutionary period? WHo coined the phrase "There are many times that try men's souls"? Who felt God was on the colonists' side and would help them win the war? the choices fo WHO questions...

english
i've just read "The Crisis" and i can't answer the questions.. i don tget it... 1. Which passages in the excerpt of "The Crisis" no. 1 were especially stirring? 2. The phamplet opens with two famous images. What kinds of people does paine identify w...

Pages: <<Prev | 1 | 2

Search
Members