Friday

January 30, 2015

January 30, 2015

Total # Posts: 64

**physics please help **

the potential difference across a load is 9V. explain what this means in more fundamental terms.
*January 19, 2015*

**physics**

the speed of a wave in a 4 m rope is 3.2 m/s. what is the frequency of the vibration required to produce a standing wave pattern with 1 antinode? 2 antinodes? 4 antinodes? please help!!! i don't understand how to do this
*January 5, 2015*

**physics, how to find the height**

a ball is launched at an angle to the ground with an initial speed of 65m/s. at it's maximum height it has a speed of 26m/s. determine it's maximum height.
*November 27, 2014*

**physics, how to find the height**

On the surface of a planet an object is thrown vertically upward with an initial speed of 60 m/s. use a conservation of energy approach to determine the object's speed when the object is at a quarter of it's maximum height. (assume the planet has no atmosphere) please ...
*November 26, 2014*

**physics please help **

On the surface of a planet an object is thrown vertically upward with an initial speed of 60 m/s. use a conservation of energy approach to determine the object's speed when the object is at a quarter of it's maximum height. (assume the planet has no atmosphere) PLEASE ...
*November 23, 2014*

**physics please help **

a 65 kg bag is dragged along a 12m ramp in order to get from the ground to the floor of the loading dock 2m above the ground. determine the efficiency of of the ramp. The frictional force acting on the bag is 50N due to the ramp. I don't understand how to the find the ...
*November 23, 2014*

**physics**

a 65 kg bag is dragged along a 12m ramp in order to get from the ground to the floor of the loading dock 2m above the ground. determine the efficiency of of the ramp. The frictional force acting on the bag is 50N due to the ramp. I don't understand how to the find the ...
*November 23, 2014*

**physics**

oh and frictional force acting on the bag is 50N
*November 23, 2014*

**physics**

a 65 kg bag is dragged along a 12m ramp in order to get from the ground to the floor of the loading dock 2m above the ground. determine the efficiency of of the ramp. I don't understand how to the find the energy output and input.
*November 23, 2014*

**physics**

a 7 kg ball is thrown into the air from ground level with an initial velocity of 24m/s. Determine the ball's maximum height. Use conservation of energy. help!!!
*November 16, 2014*

**please help, math question**

@reiny what did you do to get from 2x^2 + 25x - 75 = 0 to (2x - 5)(x+15) ?
*November 5, 2014*

**please help, math question**

A matte of uniform width is to be placed around a painting so that the area of the matted surface is equal to the area of the painting. If the dimensions of the painting are 15 cm and 10 cm, find the width of the matte. The answer is supposed to be 2.5 cm but I keep getting 12.5.
*November 5, 2014*

**Math, please help**

A matte of uniform width is to be placed around a painting so that the area of the matted surface is equal to the area of the painting. If the dimensions of the painting are 15 cm and 10 cm, find the width of the matte. The answer is supposed to be 2.5 cm but I keep getting 12...
*November 5, 2014*

**physics**

^^ bobpursley What formula did you use? Could you repost it using v1 and v2 as variables?
*November 2, 2014*

**physics**

Arann launches a rock into the air such that it rises 20.0 m in the first third (time wise) of its ascent to maximum height. Determine the rock's maximum height and launch speed. Determine the time(s) at which the ball is at a height of 10m. PLEASE HELP
*November 2, 2014*

**Physics**

A space craft made up of two parts with masses m1 = 2.3 kg and m2 = 3.4 kg is held together by explosive bolts against a spring. The spring is compressed by 73.0 cm and has negligible mass. After the bolts are exploded m1 is found to have a speed of 3.6 m/s away from the ...
*October 27, 2014*

**Math**

Given that a^33 = -2p; a^74 = 26p, what is a^1?
*September 20, 2014*

**Math**

1. If one wishes to accumulate a Php 30,000-fund in 5 years, how much should he deposit now at 18% compounded quarterly? 2. If a bank offers a rate of 4.5% compounded semiannually, how much should you deposit to accumulate Php 50,000 in 15 years 3. Suppose that a particular ...
*September 9, 2014*

**Geometry**

2.Given two segments with lengths x and y (x does not equal y), which three special parallelograms meet the three sets of given conditions? a. One diagonal has length x, the other has length y. b. The diagonals intersect at right angles. c. Both diagonals have length y and do ...
*June 24, 2014*

**Geometry**

What type of quadrilateral is formed by connecting the points (0,0), (3x,b), (18x,b), and (15x,0)? How would I solve this?
*June 24, 2014*

**math**

can you me the answer from fraction must be in simplest form!!!!
*May 19, 2014*

**Physics**

A 100 g mass is attached and wrapped around an apparatus at a constant radius of 10 cm. The hanging mass is dropped and obtains a speed of 0.2 m/s after 1 m. Using energy considerations, what is the moment of inertia of the apparatus?
*April 9, 2014*

**English II - Concluding an essay!!!**

Thank you this really helped!!
*November 22, 2013*

**English II - Concluding an essay!!! **

Hi, I really need help concluding my essay on Othello. My thesis is: The worldly Emilia and Bianca create a strong contrast against the virtuous and innocent Desdemona, reinforcing the tragedy of her death and Othello's crime. What I have for my conclusion is: In ...
*November 22, 2013*

**science**

Create a diamante poem about acids and bases.
*November 5, 2013*

**science**

THE PILOT OF AN AIRPLAINE TRAVELING WITH A HORIZONTAL SPEED OF 70 M/S TO DROP RESCUE SUPPLIES TO PHYSICS STUDENTS STRANDED ON AN ISLAND 240M BELOW. sOLVE FOR HORIZONTAL DISPLACEMENT.
*August 22, 2013*

**Chemistry**

Would water-insoluble alcohols, like 1-octanol, be soluble in aqueuous NaOH?
*May 15, 2012*

**math**

The answer is 30/50 and that made smaller is 3/5 so your answer is 3/5
*April 18, 2012*

**Math**

I'm in 5th grade and here's my question: I have to write which fraction represents the ratio of corresponding sides? There are 2 triangles. One triangle has the measurements 3in., 9in. and 6in. The other triangle is 18in., 54in. and 36in. Thank you.
*March 5, 2012*

**chemistry**

plug what into where? my teacher hasn't explained anything relating to this problem so I have no idea what to do.
*February 18, 2012*

**chemistry**

I don't know how to solve it
*February 18, 2012*

**chemistry**

The Clapeyron-Clausisus Equation is ln(P2/P1) = dHvap/R [(1/T1)-(1/T2)]. Assuming that dHvap doesn't change with the temperature, this equation relates the change in vapor pressure and temperature to a substances enthalpy of vaporization (R is the molar gas constant). Use ...
*February 18, 2012*

**chemistry**

i don't know how to clarify the question. Thats how it is on my paper.
*February 18, 2012*

**chemistry**

calculate the water vapor pressure of benzene at 0.80, 0.60, 0,40, and 0.20 mole fraction and toluene at 0.20, 0.40, 0.60, and 0.80 mole fraction.
*February 18, 2012*

**Spanish**

I have to compare two activites-like one is more interesting, or more fun, etc; Did I do it correctly-thank you for checking this- Tocar la piano es más divertido que tocar la guitarra. Montar a caballo es más interesante que caminar el gato. Cantar es menos fac&...
*October 9, 2011*

**physics**

Which statements are true for the resistivity of a metal conductor: It depends on the temperature of the material. It becomes smaller as the cross-sectional area of the material becomes smaller. It is positive for copper but negative for carbon. It has units of ohms/meter. It ...
*September 28, 2011*

**Math**

If the square root of a number is an integer, the number is called a perfect square. one example of a perfect square is a.) 50 or b.) 81
*March 14, 2011*

**Astronomy**

We can calculate the kinetic energy of any moving object with a very simple formula: kinetic energy = 1/2 mv^2 ,where m is the object's mass and v is its velocity or speed. Table Energy Comparisons shows that metabolizing a candy bar releases about 10^6 joules. A- How fast...
*October 19, 2010*

**7th grade**

What is a good definition of mercantilism? I don't understand when all the definitions talk about economic systems of national wealth. Thank you!
*October 16, 2010*

**7th grade**

You can get this if you concentrate on the last part that reads: *6. What's the ONLY number times 6 that will equal six? One. So (6+6)/(6+6) * 6 = 6 = 12 / 12 * 6 = 6 = 1 * 6 = 6
*October 13, 2010*

**French**

toi / la / aimer / la / moi / fête / mieux / et / nous / faire i am supposed to unscramble and conjugate these and make a sentence i cant figure one out that makes sense
*September 14, 2010*

**9th grade**

A person standing on Mars would weigh 38% of his earth weight. What is the Mars weight of a person with an earth weight of 55 kilograms?
*August 25, 2010*

**trig**

how come you get different answers if you take different paths in trigonometry? (when you choose to use sin, cos or tan)
*April 20, 2010*

**reading and language**

examples of propoganda
*April 18, 2010*

**geometry**

what is the surface area of a box, that has the length of 15 in , a width of 8 in . and a height of 3 in.
*March 31, 2010*

**Earth Science **

Fault
*December 7, 2009*

**math**

733 333 333
*October 27, 2009*

**math**

how do u know?
*September 13, 2009*

**math**

is 1 a composite number or a prime number?
*September 13, 2009*

**Math**

steph???
*September 13, 2009*

**art**

thank you
*September 10, 2009*

**art**

i dont understand how rhythm of principles of design works, either
*September 10, 2009*

**art**

thank you so much gurublue. you have helped me many times. thanks.
*September 10, 2009*

**art**

what is the difference between unity and emphasis?
*September 10, 2009*

**science**

i think so
*September 10, 2009*

**6th Grade Math**

Thanks so much! :)
*April 15, 2009*

**6th Grade Math**

I don't really understand the rules for adding and subtracting integers. Can someone explain them to me?
*April 15, 2009*

**English----Writing**

I have an English project I am currently working on that focuses on the novel "Animal Farm" by George Orwell. My team and I are writing a revolutionary newspaper that would have been printed on the farm in order to turn, (or at least attempt to turn) the others ...
*March 25, 2009*

**FRENCH**

Both "Un jour, je ferai un voyage en France" and "Je vais faire un voyage en France cet été" (Replace "en été" with "cet été" in you're speaking about the summer to come) ("En" ...
*March 25, 2009*

** 4TH GRADE URGENT LATE MATH HOMEWORK!!!!**

Thanks!!!!!!!!!!!!!!!!!!!
*February 8, 2009*

** 4TH GRADE URGENT LATE MATH HOMEWORK!!!!**

What shape has the same number of vertices as faces? Thanks!
*February 8, 2009*

**accounting**

What are the amounts?
*February 8, 2009*

**algebra**

Thanks but this doesnt really help me answer my question.
*October 14, 2007*

**algebra**

Superman the Escape in CAlifornia is the fastest roller coaster in the world. Riders fall 415 feet in 7 seconds. Speeds reach a maximum of 100 miles per hour. If x represents the average rate of fall of the roller coaster, write an expression to represent the situation. (Hint...
*October 14, 2007*

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