Wednesday

July 27, 2016
Total # Posts: 1,312

**physics**

A 1580 kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.0 m? Calculate the kinetic energy: E_{k} = 1/2 m v^2 Then use that The work performed by the force must ...
*November 13, 2006*

**english**

simple subject: wind simple predicate: bit
*October 24, 2006*

**A.P Chemistry**

D. 2NO + O2 -> 2NO2 E. since only half of the moles of O2 will be consumed in the reaction there will be .176 mol NO2 and .088 mol O2 so... PNO2 = .176mol(.08296)(298K)/5L = .8608 atm PO2 = .088mol(.08206)(298K)/5L = .4304 atm PNO2 + PO2 = Total Pressure = 1.2912 atm
*October 22, 2006*

**Related Rates**

Water is leaking out of an inverted conical tank at a rate of 500 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 10 meters and the diameter at the top is 4.5 meters. If the water level is rising at a ...
*October 14, 2006*

**Math**

7^2006 Solving problems with "to the power of" IT works better if you post a problem you have having difficulty with, and explain what you are having difficulty with. Rob has 124 cans of sweet corn to stack on the shelf.If he puts 6 cans in each row,about how many ...
*October 8, 2006*

**calculus**

Using the 4 step method fidn teh derivative of F(x) =1/(x^2) 1) I got /(x^2+2xh+h^2) 2)2xh+h^2/(x^2+2xh+h^2)(x^2) 3)2x+h/(x^2+2xh+h^2)(x^2) 4)1/x I don't understand why I got this problem wrong on my test can you explain the correct way? The second step is wrong, it should...
*October 2, 2006*

**sciecne**

In unit-vector notation, what is teh sum of vector a =(4m)i + (3m)j and vector b= (-13m)i +(7m)j? a)I got (27m)i +(10m)j but the book said it should have been (-9m)i +(10m)j b)what is the magnitude and direction of vector a + vector b (relative to i)? to find the magnitude i ...
*September 30, 2006*

**Math**

thanks for the answers, but I need to know how to solve the problems, so I can finish the remainder of my homework. Use a power of ten to change each to a decimal. 2 1/2 4 1/25 I need to learn how to solve these types of problems. I was out of the room when the teacher ...
*September 20, 2006*

**Math**

Please exlain how I "use the power of ten to change each to a decimal". I was in a band lesson when my math teacher taught this. Thanks. 4 over 50 9 over 25 (fractions) 4/50= 0.08=8.0*10(exponent-2),exponent-2 means to move the decimal point to the left 2 spaces.. 9/...
*September 20, 2006*

**Algebra**

(-16)^-2/3
*September 14, 2006*

**hispanic american Diversity**

I am needing to find information on identifying the linquistic, political, social economic, religious and familial conventions of four hispancic groups living in america one Mexican Americans, Puerto Ricans, Cubans, and Latinos can anyone help me where to get started on this i...
*August 12, 2006*

**physics**

How is it that contact lenses can be thinner than bifocales but just as effective at fixing someone's sight? The power or 1/f of contact or framed glasses for the same person needs to be the same. Power is proportional to (N-1)[1/R1 - 1/R2]. N is the index of refraction of...
*July 15, 2006*