Wednesday

September 17, 2014

September 17, 2014

Total # Posts: 14

**Physics **

Vanessa can swim 3.0 m/s in still water. While trying to swim directly across a river from west to east, Vanessa is pulled by a current flowing southward at 2.0 m/s. A) What is the magnitude of Vanessa’s resultant velocity? B) If Vanessa wants to end up exactly across ...
*October 20, 2013*

**Physics **

Vanessa can swim 3.0 m/s in still water. While trying to swim directly across a river from west to east, Vanessa is pulled by a current flowing southward at 2.0 m/s. A) What is the magnitude of Vanessa’s resultant velocity? B) If Vanessa wants to end up exactly across ...
*October 20, 2013*

**Math**

A baseball diamond is a square sides 22.4 m. The pitcher's mound is 16.8 m from home plate on the line joining home plate and second base.. How far is the pitcher's mound from first base? (we are using the LAW OF SINES AND COSINES)
*October 1, 2012*

**Algebra 1**

An exam consists of two parts, Section X and Section Y. There can be a maximum of 80 questions. There must be at least 20 more questions in Section Y than in Section X. Write a system of inequalities to model the number of questions in each of the two sections. Then solve the ...
*May 6, 2012*

**Chemistry**

The density of a 40.0% by weight aqueous solution of NaOH is 1.432 g/cm3 what is the molarity of NaOH?
*March 21, 2012*

**statistics**

A telephone company's goal is to have no more than five monthly line failures on any 150 miles of line. The company currently experiences an average of 3 monthly line failures per 75 miles of line. Let x denote the number of monthly line failures per 150 miles of line. ...
*September 30, 2011*

**psy Stats.**

how do you Calculate percentage when given standard deviation and mean
*May 10, 2011*

**Statistics Psychology**

I do not understand how to find the critical values of the test statistics. I also need help understanding how to find the standard error as well. Thank you!
*May 10, 2011*

**math**

If a polyhedron has one side that is a triangle what would be the other sides measurements?
*April 5, 2011*

**Physics 1**

The cartesian coordinates of a point in the xy plane are x= -3.64 m, y = -1.75 m. 1. Find the distance, r, from the point to the origin. Answer in units of m. 2. Calculate the angle between the radius-vector of the point and the positive x axis (measured counterclockwise from ...
*August 26, 2010*

**physics**

The disk shaped head of a pin is 1.0 mm in diameter. Which of the following is the best estimate of the number of atoms in the layer of atoms on the top of the surface of the pinhead? 1. 10 to the 34th power 2. 10 to the 19th power 3. 10 to the 24th power 4. 10 to the 29th ...
*August 26, 2010*

**physics**

a.What electric potential difference exists across a 5.2 µF capacitor that has a charge of 2.1 10-3 C? how do i use uF and C into a formula to find answer?? b.An oil drop is negatively charged and weighs 8.5 10-15 N. The drop is suspended in an electric field intensity ...
*February 5, 2008*

**science**

The electric field intensity between two charged plates is 1.1*10^3 N/C. The plates are 0.070 m apart. What is the electric potential difference, in volts, between the plates?
*February 5, 2008*

**physics**

In a television picture tube, electrons are accelerated by an electric field having a value of 1*10^5 N/C. Find the force on an electron. so i know i use E=F/q to find the force but i need the q to get it how do i do that??
*February 3, 2008*

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