Friday

October 28, 2016
Total # Posts: 520

**Science**

A girl makes a sample of a new material and says that the density of the material is 0.85 g/cm. Can you tell how large a sample she made? How?

*October 28, 2007*

**ap physics**

can you please check my answers and help me with one question? During a lie dector test, a voltage of 6 V is impressed across two fingers. When a certain question is asked, the resistance between the fingers drops from 400,000 ohms to 200, 000 ohms. What is the current (a) ...

*October 25, 2007*

**ap physics**

can you please check my answers and help me with one question? During a lie dector test, a voltage of 6 V is impressed across two fingers. When a certain question is asked, the resistance between the fingers drops from 400,000 ohms to 200, 000 ohms. What is the current (a) ...

*October 25, 2007*

**Decartes Rule**

Can you please check my work? Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=-7x^9+x^5-x^2+6 This is what I did: There are 2 sign changes f(-x)=-7(-x)^9+(-x)^5-(-x)^2+6 There are 2 sign changes So...

*October 12, 2007*

**Decartes Rules**

Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. Please check my answers? 1. f(x)=-7x^9+x^5-x^2+6 This is what I did: There are 2 sign changes f(-x)=-7(-x)^9+(-x)^5-(-x)^2+6 There are 2 sign changes So, are ...

*October 10, 2007*

**Decartes Rule of Signs-Check Problems**

Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=-7x^9+x^5-x^2+6 This is what I did: There are 2 sign changes f(-x)=-7(-x)^9+(-x)^5-(-x)^2+6 There are 2 sign changes So, are there 2 or 0 positive ...

*October 9, 2007*

**Decartes Rule of Signs**

Could you explain to me decartes Rule of signs? Here are my questions: Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=-7x^9+x^5-x^2+6 choices are: a. 2 or 0 positive zeros,2 or 0 negative zeros b.2...

*October 9, 2007*

**physics**

528

*September 16, 2007*

**physics**

501.60

*September 16, 2007*

**econ**

In France each unit of labour can produce 3 bottles of wine or 2 shirts. In Portugal each unit of labour can produce 2 bottles of wine or 1 shirt. Which country has a comparative advantage in producing wine? It would seem that France has the advantage. No its Portugal. The ...

*May 22, 2007*

**BCIS**

List netiquette guidelines.

*May 21, 2007*

**Capital Budgeting**

A company has revenues of 100 per unit sold. Current sales are 7500 units. Labor rates are 15 per hour. It takes 1.2 hours of labor to make each buggy. Material costs are 13.50 per unit. Figures are expected to remain the same permanently if the company continues to ...

*April 24, 2007*

**GEOLOGY-IMPORTANT**

hi i am looking for geologically relevant song lyrics or poetry published after 1990. The stuff cant be writen by a geologist either. i realllly need to find this any help i would appreciate so much!!! thank you.

*December 5, 2006*

**geology-important!**

hi i am looking for geologically relevant song lyrics or poetry published after 1990. i realllly need to find this any help i would appreciate so much!!! thank you. http://www.danneyball.com/_51.htm http://www.exploratorium.edu/faultline/activezone/media.html http://www.twin-...

*December 2, 2006*

**Integration**

ç e^ãx / ãx dx Your symbols are not legible. Please retype using normal keyboard characters Integration of e^radicalx / radicalx dx

*November 30, 2006*

**Math**

ç 2x^3 + 3x^2 + x + 1 dx --------------------- -2x + 1 [2x^3 + 3x^2 + x + 1]/(-2x + 1) = ax^2 + bx + c + d/(-2x + 1) ----> 2x^3 + 3x^2 + x + 1 = (ax^2 + bx + c)* (-2x + 1) + d Find a, b , c and d by equating the coeffients of equal powers of x on both sides. ...

*November 30, 2006*

**Identifying controls and Variables**

Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special Juice. After an hour, ...

*October 1, 2006*

**Science**

I missed a few days and I forgot what the following are Independent Variable Dependent Variable Control and the order of scientific methood This should refresh your memory. An independent variable is the potential stimulus or cause, usually directly manipulated by the ...

*October 1, 2006*

**ap chem0 frequency**

how do u do this type of problem... What is the frequency of a photon with a wavelength of 2.25 102 nm? (The speed of light in a vacuum is 2.998 108 m/s. Planck's constant is 6.626 10-34 Js c = fw. c is speed of light which you have, f is frequency for which you must solve...

*September 28, 2006*

**ap chem-3 quest just need 1 answer**

A rifle bullet (mass = 1.50 g) is moving with a velocity of 850. mph. What is the wavelength associated with this bullet? Assume your eyes receive a signal consisting of blue light, = 470 nm. The energy of the signal is 2.5 10-14 J. How many photons reach your eyes? You must ...

*September 27, 2006*