Posts by ira
Total # Posts: 19
Charge Q1=6.0 nC is at (0.30 m, 0), charge Q2=−1.0 nC is at (0, 0.10 m), and charge Q3=5.0 nC is at (0, 0). What is the magnitude of the net electrostatic force on the 5.0-nC charge due to the other charges? What is the direction of the net electrostatic force on the 5.0...
December 17, 2015
8th grade science :(
Please Please Please Please Please help me with this because I have looked at a million websites and I have read the whole chapter in my science book just trying to find the answer so can someone please help me with this question? Please? Thank you. Counting on you Ms. Sue ;)
December 9, 2013
Are my answers here correct ? Research questions for z test, t test for independent samples and t test for dependent samples : z test: "An investigator is interested in finding out whether the particular sample of college students is similar to or different from college ...
July 16, 2013
The reading list for a literature class has 6 fiction and 8 nonfiction books. A student is to write a report on 5 books from the list during the semester. The report must include at least 1 and at most 4 reports of fiction books. In how many ways can the selection of books be ...
March 28, 2013
Chemical analysis of a germanium crystal reveals indium at a level of 0.03091 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Ge matrix is negligible, what is the density of free charge carriers (free carriers/cm3) in this Ge crystal?
November 20, 2012
Hi there, could you please help me with the following questions: 1.) How does the Hardy-Weinberg provide a baseline for identifying how populations evolve, as a function of changes in their allele frequencies? 2.) Grey squirrels are predominate since they are camouflaged ...
June 1, 2010
4)Explain why,when a soccer ball is kicked, the action and reaction forces don't cancel each other. a)The force of the player's foot on the ball greater than the force on the ball on the player's foot. b)They act on two different objects. c)The reaction force ...
March 14, 2010