Wednesday
October 1, 2014

Posts by JOshua


Total # Posts: 515

Physics
What is the frequency of a sound wave in air at 20°C that has a wavelength of 0.4 m?
November 27, 2012

Physics
A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?
November 19, 2012

Physics
A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?
November 19, 2012

Physics
A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?
November 19, 2012

Physics
A crate with a mass of 40 kg is being dragged along a horizontal floor at a constant velocity by an applied force of 180 N. What is the coefficient of kinetic friction? (g = 10 m/s2
November 9, 2012

English/Literature
I have to write an essay, but I just need help with coming up with some ideas. In the essay, I have to compare/contrast the plays "Ajax" OR "Electra" (both are by Sophocles) with the "Iliad" (by Homer). I CANNOT mention similarities/differences in...
October 23, 2012

Math(Algebra)
If an arrow was shot at such an angle that for every second of travel a lateral change of 50 feet away from the archer was gained, how far away does the arrow land from cliff base?
October 17, 2012

Math(Algebra)
Thanks Steve
October 5, 2012

Math(Algebra)
An arrow is shot vertically upward from the top of a cliff 80 feet tall, with an initial velocity of 64 ft/s, (the acceleration due to gravity is -16ft/sec). a. Write the quadratic equation representing this scenario when h is 0. b. Find the roots (solutions) for this ...
October 5, 2012

history
C. Fifteenth Amendment
October 5, 2012

Science
A gun fires a shell at an angle of elevation of 30 degrees with a velocity of 2*10^3m/s. What is the horizontal and vertical component of the velocity? What is the range of the shell? how high will the ball rise
September 29, 2012

algebra
Pat had $3. He gets some money from his parents. He now has twice as much money as Dani. Write an expression to represent how much money Dani has. Tell what the variable represents.
September 25, 2012

English
The rain forest is very wet, it gets more than 80 inches of rain each year. Run on right?
September 24, 2012

English
fragment
September 24, 2012

English
Sentence
September 24, 2012

English
Thirty million different kinds of insects sentence run on or fragment
September 24, 2012

English
Sentence
September 24, 2012

English
THe tall trees block the blue sky? Sentence run on or fragment?
September 24, 2012

ENglish
fragment
September 24, 2012

ENglish
THree fourths of all plants and animals. Sentence run-on or fragment?
September 24, 2012

English
A rain forest is always green many plants grow there. Is this a fragment, run-on or complete sentence?
September 24, 2012

Social Studies
Name 2 Natural Resources and tell me how you can take care of them? How do people use them to make a living?
September 23, 2012

social studies
california
September 23, 2012

social studies
Central Valley what Cities are in that region? What can you find there, see or do, jobs and natural resouces that you might find ther. Why is that region great?
September 23, 2012

Social Studies
What is a human resource? Name some examples of human resources and how they help the world?
September 23, 2012

social studies
Name 2 Natural Resources? How can you take care of them? How do people use them to make a living?
September 23, 2012

social studies
Name 2 Natural Resources and tell how you can take care of them. How do people use them to make a living?
September 23, 2012

Social Studies
Which three countries makes up most of North America?
September 20, 2012

English
The total suprised us and pleased us. Is this right?
September 17, 2012

English
Combine each pair of sentences use and,but,or, to join the two predicates The total suprised us. The total pleased us.
September 17, 2012

English
Thanks
September 17, 2012

English
Would the answer be Ray baked and served cookies. the simple predicates would be baked and served.
September 17, 2012

English
Write each sentence pair. Underline the simple predicates then write a conjunction you could use to join them. Ray baked cookies. Ray served cookies.
September 17, 2012

math
i am less than one million.The number in the left most place is a 9. The numbers in each place to the right is 2 less than the previous number.I have no ones.What number am i?
September 16, 2012

simple subject
what is the simple subject in this sentence Jenna enjoyed working and Patrick enjoyed work.
September 13, 2012

math
i am a number less than 10.my hundreds digit is 3 more than my thousands digit,my tenths is 2 less than my hundreds and my ones is the sum of my tenths and hundreds digits.what number can i be?
August 23, 2012

Maths
What is the square root of:- a)6889 b)1681
June 8, 2012

english
How to make a sonnet poem with 10 syllables
May 14, 2012

Math
A rectangular solid has a base area of 43.3 sq inches and a height of 50 inches a triangular prism has a base in the shape of an equilateral triangle and a height of 50 inches. the volumes for both shapes are equal. find the side of the equilateral triangle for the base of the...
May 12, 2012

Maths
The sum of the 2digits of a 2 digit number is 15. If th number formed by reversing the digits is less than the orginal number by 27.Find the orginal number
May 8, 2012

DATA HELP!!
Estimate the population size of a bird species if in 100 sightings along a migration path, 25 were ringed, and it is known that 500 of the birds had been ringed before the sightings?
May 3, 2012

English arts 1 Nouns
Aaron plans to attend college once he completes this course workbook. im suppose to identify the nouns in the sentence the nouns are Aaron,college,workbook right? im debating on course idk? help lol
May 3, 2012

Data Management
Estimate the population size of a bird species if in 100 sightings along a migration path, 25 were ringed, and it is known that 500 of the birds had been ringed before the sightings?
May 2, 2012

Data Management
Verify that the expression formula for a hypergeometric distribution gives the same result as the general equation for the expectation of any probability distribution.
May 2, 2012

Data Management
A box contains 14 yellow, 6 green, 10 purple, and 12 red candies jumbled together. What is the expected number of red candies among 5 candies poured from the box?
May 2, 2012

Math
Hey, I'm confused on this one problem and can you help me please? Thanks a bunch! :] The problem is: The figure consists of a square with 4 half circles surrounding it. If the perimeter of the figure is 87 yards, what is the radius of each half circle? What is the area of ...
April 25, 2012

Algebra2
The area of a rectangular field is x^2-x-72 m^2. The length of the field is x+8 m. What is the width of the field in meters?
April 5, 2012

First Year Chemistry
I have a question that I don't understand from my first year chem lab. Calculate the minimum volume of water needed to decompose all the excess Ethanoic Anhydride. Recall: 1.0g of H2O = 1.0 ml of water. How do I go about doing this?
March 11, 2012

Math
What is a motion pattern?
March 8, 2012

English-metaphors
It must be nice," she said. "It must be very nice. I wish women could do such things." "It ain't the right kind of a life for a woman. Her upper lip raised a little, showing her teeth. "How do you know? How can you tell?" she said. "I don...
February 20, 2012

English-metaphors
Is this quote a metaphor? "That's a bright direction, there's a glowing there." In context it seems like a metaphor since the direction she is looking in is not actually bright or glowing. there was a lot of text for the question but I thought it e too much. ...
February 20, 2012

Geometry
27....remember is volume 3x3x3
February 15, 2012

Geometry
Help me today,please!Don't give me the answers if you don't want to,but please give me an idea of what im supposed to do! :(
February 13, 2012

Geometry
Two angles of triangle FGH measure 33 degrees and 57 degrees.What is the measure of the third angle in FGH?
February 13, 2012

Trigonometry
Add and subtract as indicated. Then simplify your answer if possible. Leave answer in terms of sin(θ) and/or cos(θ). (Remember to enter trigonometric powers such as sin2(x) as (sin(x))2.) 1/sin-sin=
January 30, 2012

Chemistry
How does the formation of metallic bonds explain the fact that metals tend to conduct electricity?
January 23, 2012

Science
How does the formation of metallic bonds explain the fact that metals tend to conduct electricity?
January 23, 2012

geometry
If 3 inches represent 18 miles, what do 7 inches represent?
January 19, 2012

Algebra
c=6350/(425-3x) What is the cost and equation to remove 99% of the pollution in the pond?
December 15, 2011

Algebra
The cost, in millions, to remove x% of pollution in a pond is modeled by the equation: C=6350/(425-3x) . What is the cost to remove 75% of the pollution? Hint: Plug in and calculate, do not convert to a decimal. Can someone tell me how figure this out step by step recheck my ...
December 15, 2011

precalc
Suppose that z1=6-8i. Find: A. The Trig Form of the complex number z1, where your theta is in degrees. B. The Trig form of z1*z2, where z2=5[cos(60degrees)+isin(60degrees)] C. The Trig Form of (z1)^4
December 5, 2011

Pre-Calculus(Help)
Partial Fraction of the Rational Expression: x^2+x+8/x^3+x
December 4, 2011

Economics
Do you feel there are any imbalances to our wage structure in our economy? why? give an example
December 4, 2011

spanish
Al principio del cuento, el narrador y su familia de braceros migratorios tenían que mudarse a Fresno porque la cosecha de las fresas se había terminado. El narrador estaba triste porque no quería cambiar su vida, pero sus hermanos estaban emocionados ...
December 4, 2011

Math
Jim Gray invested $8,500 four times a year in an annuity due at All-Star Investments for a period of 3 years at an interest rate of 12% compounded quarterly. Using the ordinary annuity table , calculate the total value of the annuity due at the end of the 3-year period. The ...
December 3, 2011

Further maths
The 7th term of an A.p is 20 and the 13th term is 38 find the ,1,70thterm ,2,11thterm
November 30, 2011

Further maths
The 7th term of an A.p is 20 and the 13th term is 38 find the ,1,70thterm ,2,11thterm
November 30, 2011

World History
Which Christian empire in southwest Asia did the Ottomans conquered? What was the capital of the Christian Empire in southwestern Asia that the Ottomans conquered?
November 17, 2011

reproductive system
What does pamouseen mean inreproduction
November 4, 2011

calculus
do you happen to see a slant asym.?
October 26, 2011

calculus
what is the vertical asymptote and horizontal asymptote of f(x) =1/4x^4-(3/2)x^(1/2)
October 26, 2011

cj
what is the sum of 756 and 249?
October 26, 2011

Physics
A particle of mass 5 kg is acted upon by a horizontal force of magnitude 16 N for 8 seconds, in which time it moves from rest until it is traveling with a speed v m/s. The particle continues to move with this speed for the next 15 seconds. it is brought to rest by the ...
October 19, 2011

Mechanics
A particle of mass 5 kg is acted upon by a horizontal force of magnitude 16 N for 8 seconds, in which time it moves from rest until it is traveling with a speed v m/s. The particle continues to move with this speed for the next 15 seconds. it is brought to rest by the ...
October 19, 2011

Mechanics
Light travels at 3*10^8 m/s. After how many seconds can the lighting reach a distance of be heard 2310 meters away from where it happened?
October 19, 2011

physics
The pilot of a plane looks at her speedometer to see that she is traveling at 165 km/h and she is heading north. An observer on the ground looks at the plane and it appears to be going 145 km/h. What is the velocity of the wind that is affecting the plane?
October 19, 2011

physics
a jet airliner moving initially at 3..00X10^2 mi/h due east enters a region where the wind is blowing 1.0 x 10^2 mi/h in a direction 30 degrees north of east. A) find the components of the velocity of the jet airliner relative to the air. b) find the components of the velocity...
October 2, 2011

scientist
why do scientists do experiments
September 14, 2011

math
im sorry i wont do that again
September 7, 2011

math
3/8x + 16 = 9/8x - 20 what is x ? please help!!!!
September 7, 2011

math please help me
thank you
September 7, 2011

math
please answer me
September 7, 2011

Algebra(Check Please?)9nth Grade
3.) 3x + y = -8 My answer: Y=-8 + -3x 4.)2x - y = 11 My Answer: y=2x + -11 5.) 4x + -8y = 24 My answer: y = 32x + -192 6.) 15x + 10 = -14 - 9x My answer: NEED HELP WITH THIS ONE.
September 7, 2011

Algebra
Thank you so much! How did you get those though? I cant seem to figure it out...
September 7, 2011

Algebra
Check these answers? ? 3x + y = -8 My answer: y=-11 2x - y = 11 My Answer: y=13
September 7, 2011

Algebra
Is that the answer? Thank you so much<3
September 7, 2011

Algebra
how would you work this out? C=3A + 3b
September 7, 2011

Reading
What are 2-3 questions that a critical reader and thinker should be asking himself or herself about logical deductive and inductive reasoning when reading arguments? These questions should be questions that will help increase comprehension and recall.
August 30, 2011

Maths
I am just starting to learn algebra. My question is -2n-(9-10n)=? I have to simplify this. I think it is 8n-9 Can you please tell me if this is correct or how to do it? Thanks a lot
August 22, 2011

French
this really helped me out too,!
August 18, 2011

math
What i am asking is how would i measure out 2.5cm diameter onto grid paper which my backyard design is on?
August 7, 2011

math
I have a math assignment and i am meant to do i backyard design and i have to fit in a fishpond which has an outside diameter of 2.5 and a water depth of 40cm. how should i measure it out into the backyard design?
August 7, 2011

french
is it true or false that a qui esta la means whos there
June 20, 2011

Physics
A horizontal massless beam of length 1 m is supported at two points. One fulcrum is at one end of the beam, point "O", and the other at the 0.60m point "P". Two equal weights are placed on the beam, one at O and one at point Q at distance x from O. Find the...
June 20, 2011

Physics
A 2000kg car begins from rest and rolls 50.0m down a frictionless 10 degrees incline. If there is a horizontal spring at the end of the incline, what spring constant is required to stop the car in a distance of 1.00m?
June 14, 2011

physics
87m
May 27, 2011

trig FAR ROCK
(X t 2)3
May 5, 2011

algebra
2x-3y=2 x+2y=-20 solve each system by sudstitution
April 29, 2011

trig
an angle 30 with the distace of 24km and an angle of elevation of 45 with the distance of 15km.
April 23, 2011

math
how do you find 1/4 of 48
April 11, 2011

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