Two electrons are placed; one at north pole and other at south pole of earth. Find the force between them. Given diameter of earth= 12800 km.
100,104 results, page 90-
Science
why have the jet streams moved north because of global warming?
asked by Anonymous on December 11, 2012 -
SOCIAL STUDIES
How did the Columbian Exchange affect the north america and EUROUPE ?
asked by 45SEC on September 15, 2015 -
History
How did geography of North America help or hinder our nation's development?
asked by Maria on September 9, 2012 -
Geography
What is the name of the island in North America that is part of Denmark. Greenland
asked by cindy on March 12, 2007 -
Physics
A boy walk 1km due north.what is his displacement?
asked by Okereke on November 11, 2011 -
world history
What are some changes and continuities in the demography of North America from 600-1750?
asked by Anonymous on February 17, 2013 -
Physics 30
Vectors A) 3.5 cm North B) 4.2 cm West Algebraically subtract B from A(B-A) Whaaaa? Please help
asked by Don on February 22, 2012 -
science
A boy moves 100m towards North then 70 my towards East then what is its displacement
asked by kamran on March 3, 2018 -
social studies
1. What was the first PERMANENT European colony in North America? hope someone can help!!
asked by JJ on October 28, 2010 -
Social Studies
Why Did European explorers claim land in North America?
asked by Ryan on February 8, 2009 -
8th grade, history ?#3
How did spain establish territorial claims in north america?
asked by Debra on October 11, 2008 -
8th grade, history ?#6
How did france establsi hterritoral claims in north america?
asked by Debra on October 11, 2008 -
science
If a ball rolls North 5 meters in 2 seconds, what is its speed?
asked by Gwinn on October 5, 2011 -
social studies
What year did the Vikings explore the North American coastlines?
asked by dyshonn on May 13, 2011 -
health
Why is heart disease the number one killer in north america
asked by Anonymous on February 22, 2015 -
biology
Whats the width of the north american tectonic plate?
asked by lizzie on September 14, 2007 -
college
What are somenotable similarities between Australian and North American cities?
asked by Betty on April 17, 2010 -
History
Which religion was prominent to much of North Africa in the early 1800s?
asked by Dan on October 12, 2017 -
World Atlas
What website can I use to get all the information I need about a specific State (North America)?
asked by John on November 3, 2009 -
Maths
Points x and y are respectively 12m north and 5m east of point z.calculate xy
asked by Gerhard on September 5, 2016 -
social studies
What strange tade took place in North and West Africa?
asked by miley on January 28, 2010 -
gyro
a gyro always points to a certain direction, but how is it made to point only towards north?
asked by mp on February 17, 2010 -
world geography
Which of the following statements about the physical geography of North America is true?
asked by Anonymous on December 23, 2011 -
social studies
When did countries in north africa start to gain independence?
asked by abigail on November 16, 2015 -
social studies
what challenges did english settlers in north america face?
asked by jordan on December 1, 2008 -
geography
Is this correct? Mexico city is north of the tropic of capricorn?
asked by sean on September 14, 2011 -
geography
Under Communist leadership, North Korea has continued to evolve
asked by Liberty on May 13, 2013 -
world history
Which of the following nations possess nuclear weapons? I say North Korea
asked by tracy on January 23, 2012 -
Social studies
Why did Spain not colonize in some significant areas of north america??
asked by Unknown on August 24, 2013 -
Social Studies
What is located on 80 north latitude and 140 west longitude?
asked by Derrick on September 10, 2012 -
physics
a man goes 10m towards north,then 20m towards east then displacement is what
asked by sajid on June 15, 2015 -
History
Summarize New West and the Free North, 1840-1860 Please help!!!
asked by Anonymous on December 9, 2015 -
AP physics
A car travels 35 km west and 75 km north. what distance did it travel?
asked by LISAA on August 2, 2010 -
Social Studies Question
does north america have acess to local and global markets
asked by matt on April 10, 2014 -
AP style
Does anyone know if north central is hyphenated AP style? my book doesn't really specify.
asked by blaze on February 24, 2014 -
History
What is the North American Bourgeoisie belief between 1763 and 1783?
asked by Nataly on November 14, 2012 -
geography
how does the north korea affect in their geography ?? plss. I need the answer ..
asked by elaine faith on June 26, 2010 -
religion
what role does religion play in society in North Korea?
asked by Derek on May 16, 2010 -
History
which british north american colonies joined confederation
asked by Annadona on May 13, 2014 -
Physics
A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 6 g. Find the reading of the
asked by Mike on January 25, 2013 -
physical science
how many electrons does each group lose or gain? In the main group, the common valence is the same as the group number.
asked by tyler on October 17, 2006 -
Social Studies
1.What was the purpose of the Treaty of Tordesillas? A.to end a war between Spain and Portugal B.to give Portugal control over the Spice Islands C.to divide the non-European world between Spain and Portugal ******* D.to create a trade agreement between
asked by plz check these!! Thanks on October 11, 2018 -
Social Studies
Please help me understand this 1. What are the layers of the Earth? 2. Define primary and secondary sources. 3. What are the stages of the water cycle? 4. Why are equal projections of Earth inaccurate? 5. Name two rights for citizens and non-citizens of
asked by Mary Jones on October 18, 2018 -
physics
A system of 1216 particles, each of which is either an electron or a proton, has a net charge of -5.920×10-17 C. A)How many electrons are in this system (exactly)? B)What is the mass of this system (to three significant digits)?
asked by Samantha on March 10, 2015 -
geography
1. The mouth of the Parana River is located in Argentina. In what country can its source be found? Brazil 2. In what ocean do 20 degrees S latitude and 80 degrees E longitude intersect? The Indian Ocean 3. Land formed by soil deposited at the mouth of a
asked by Reed on January 21, 2012 -
Science
Please could someone check these for me. 1In a series of rock layers, a geologist finds fossils of a lizard-like dinosaur and a fern-like tree in layers that are 1.0 m and 1.5 m deep. However, in a layer that is 2.0 m deep, he finds fossils of bony fish
asked by Anonymous on January 29, 2015 -
Calculus Help
Farmer Brown wants to fence in a rectangular plot in a large field, using a straight rock wall that is already there as the north boundary. The fencing for the east and west sides of the plot will cost $3 a yard, but she needs to use special fencing, which
asked by Chris on April 25, 2014 -
us history
1. All of the following factors contributed to the weakness of organized labor in the early 1800s except a. widespread economic prosperity. b. workers' strong spirit of independence. c. the availability of inexpensive western land. d. the use of
asked by monica on December 29, 2007 -
Social Studies ASAP PLZ
1. Which of the following is the largest ethnic group in China? A. Han ** B. Tibetan C. Uighurs D. Hui 2. How is Xiao most like other Chinese people? A. He has only one brother B. He has chosen to live at home ** C. He works at a factory D. He is an
asked by Libby on March 19, 2018 -
physics
Two small spaceships, each with mass m = 2000 kg, are in the circular Earth orbit of the figure, at an altitude h of 420 km. Igor, the commander of one of the ships, arrives at any fixed point in the orbit 90.0 s ahead of Picard, the commander of the other
asked by kendell on January 4, 2011 -
English
Could you please check the first part of an interview I need to prepare on engangered species? Thank you. 1) The interviewee works for an organization, which safeguards the conservation of hundreds of endangered species around the world. 2) These species
asked by Henry2 on November 6, 2011 -
Math
Suppose that an object is 100 lbs when it is at sea level. find the value of c that makes the equation true. (Sea level is 3963 miles from the center of the earth.) Use the value of c you found in the previous question to determin how much the object would
asked by Gamel on March 10, 2008 -
Urgent CALCULUS
So, I haven't posted in a while...but now I am stummped! Only question I can't get today! A team of students seeks to make a flag representing their commitment to the earth. They will be using a green triangle inscribed in a yellow semi-circle. Find the
asked by Derek on July 25, 2008 -
physics
is this right? a 50kg barbell can be lifted by usinga force of 180 N. what is the force of gravity on this planet? if the same barbell is lifted on earth, what minimal force is needed? -i got 3.6 for gravity of the unnamed planet; and 49 N for the minimal
asked by hi, on January 18, 2008 -
PHYSICS-electricity & magnetism
An electric field exits inside a fluorescent tube of diameter 3.00cm. In one second, 2.00x10^18 electrons and 0.50x10^18 positive ions pass through a certain cross section. What is the current in the tube?
asked by Brandon on February 24, 2012 -
inorganic chermistry
a large number of hydrogen atoms have electrons excited to the n_h=4 state.How many possible spectral lines can appear in the emission spectrum as a results of the electron reaching the ground state(n_1=1)?
asked by kabelo on August 30, 2010 -
chemistry
Electronegativity is a concept that is useful along with other concepts in predicting the polarity of a bond deciding how many electrons are involved in a bond formulating a statement of the octet rule determining the charge on a polyatomic ion
asked by Lisa on February 23, 2014 -
Physics
A total 3.09e6 electrons are placed on an initially uncharged wire of length 1.36 m What is the magnitude of the electric filed a perpendicular distance of 0.417m away from the midpoint wire? I used E=k|Q|/(x(x^2+L^2/4)^1/2) and I got 9.37e16 N/C which is
asked by Cesar on September 13, 2011 -
chemistry help plz
Using the melting temperature given as guidance, state the type of bonding involved between the elements in aluminium sulfide (Al2S3). Explain how this bonding takes place with respect to the valence electrons.
asked by centya on January 30, 2013 -
inorganic chemistry
A large number of hydrogen atoms have electrons to the n=4 state.How many possible spectral lines can appear in the emission spectrum as a result of the electron reaching the ground state(n1=1).Diagram all possible pathways for de excitation from nh=4 to
asked by dimpho on July 30, 2014 -
Physics
Two metallic wires of the same material have the same length but cross-sectinal area is in the ratio of 1:2.they are connected in 1)-series 2)-parallel. Compare the drift velocities of the electrons in the two wires in both the cases. Plzz help
asked by Abhishek on January 20, 2013 -
Social Studies
Even Though they were allowed to serve as soldiers what types of discrimination did african american americans face in the Union army? (Select all that apply) A)They were not allowed to serve as officers B) They were not eligible to win high awards,such as
asked by Kacey on April 9, 2017 -
Physics
A rocket cruising past Earth at 0.79c shoots two bullets at 0.92c relative to the rocket with one of the bullets fired along the direction of the rocket's motion and the other fired opposite the rocket's motion. (a) What velocity does an Earth-based
asked by Darren on April 29, 2011 -
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
asked by kailey on February 5, 2008 -
Redox
We have to write the balanced redox equation for this and this is the only one im stuck on. Incase theres another way to do it, we have to do it where you write all the oxidation numbers and then find out which one is reducaed which is oxidized, then write
asked by Tracy on June 13, 2006 -
physics
A metal sphere of radius 5.00 cm is initially uncharged. How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.59 105 N/C at a point 7.98 cm from the center of the sphere?
asked by Allie on September 12, 2012 -
chem
What mass of protons would be required to just neutralize the charge of 1.5 g of electrons? my teacher said .0015kg times 1e-/.00091e-27kg times 1pt/1e- times 1.67262e-27 over 1 p
asked by Sara on September 21, 2010 -
chemestry
What is occurring in the following reaction? H2 + Cl2 → 2HCl A. H2 is being reduced. B. Cl2 is being oxidized. C. H2 is gaining two electrons. D. Cl2 is acting as an oxidizing agent. is the answer C? please explain
asked by louren on March 17, 2016 -
physics
Tony is driving a truck of mass 2.00 × 103 kilograms to the west with a velocity of 14.0 meters/second. He collides with a car of mass 1.20 × 103 kilograms moving to the south with velocity 21.0 meters/second. After the collision, they move together.
asked by Anonymous on March 20, 2018 -
Resultant Force?
a force F1 of 35 newtons pulls at an angle of 15 degrees notrth of due east. A force F2 of 75 newtons pulls at an angle of 55 degrees west of due south. Find the magntiude and direction of the resultant force. Please help me - I have no idea what to do or
asked by Tabby on April 24, 2012 -
Social studies
Can ya'll check my answer and help me with the 2 I don't know? :) Sectionalism grew in the southern states due to A) an increase in federal regulations on southern industry. B) holidays established to celebrate national events. C) the South's economic
asked by Layla on December 10, 2015 -
English
In one well-constructed paragraph, explain the overall effectiveness of this speech. Be sure to identify what Pearson’s persuasive goal and what arguments he uses to achieve his purpose. Be sure to offer your own opinion, with evidence from the text, on
asked by Natasha on July 5, 2015 -
calculus
Could someone help me et up this problem? Two people start from the same point. one walks east at 3mi/h and the other walks northeast at 2mi/h. How fast is the distance between the poeple changing after 15 minutes? I think this is what I would do::: First
asked by Anonymous on March 30, 2009 -
history
Which of the following states was most affected by the Dust Bowl? A. South Dakota B.Texas C.Kansas D.Oklahoma I think it is D.
asked by sharice on March 11, 2011 -
economics
What is South African government providing and for who in terms of welfare payments and consumer subsidies?
asked by Anonymous on May 21, 2017 -
geography
how has the geography and history of the South helped create a diverse population that continues to grow?
asked by bex on February 17, 2010 -
history
how did the south with fewer supplies and resources manage to stall a northern victory for four years?
asked by stephanie on February 23, 2009 -
Social Studies
The MOST LIKELY location of the Inaugural Address was in what country? a. Ghana b. India c. Rwanda d. South Africa
asked by Mia on December 9, 2016 -
Physics
If a tern travels 3.20 x 10^4 km south in 122 days, what is its average velocity in kilometers per day?
asked by NoNo100 on September 14, 2009 -
life orientation
Name and explain three checks and balances that are in place in south africa that control and regulate media
asked by yamo king on March 14, 2012 -
History
how did the issue of states' rights influence south carolina's decision to secede from the union?
asked by Knob polished on February 6, 2018 -
Life orientation
Provide recommendation on how to address water pollution in the community within South Africa(15 marks)
asked by Selby on April 24, 2013 -
Business
What are the aspects of the external environment of a gold mining company in South Africa? What about internal?
asked by Please help on September 18, 2008 -
Life orintion
Explain three checks and balances that are in place south africa that control and regulate madia
asked by Elie on March 11, 2012 -
Geography
How has the geography and history of the South helped to create a diverse population that continues to grow?
asked by Sarah on October 26, 2009 -
social studies
My question is, why is dairy unpopular as part of the East and South Asian diet? Thanks in advance
asked by John C. on March 5, 2008 -
economics
Tourism as a factor facing obstacles to contribute towards economic development in South Africa
asked by portia mbewe on April 25, 2012 -
Life Orientation
Critically discuss 8 ways in which hiv/aids impact within a community in South Africa
asked by Ally on April 10, 2013 -
social studies
suppose you are at 15 south latitude, 145 east longitude. which would be more useful-gear pr hiking boots? why
asked by yuku on September 9, 2010 -
science
Lily walked 2 blocks east, then 1 block south. How would you determine her total displacement?
asked by william on April 7, 2010 -
english
I need to think of some expressions or idioms involving Mexico, along the lines of "spice it up" "south of the border" or anything else anyone can think of. Gracias!!
asked by Courtney on October 29, 2008 -
Life orientation
Explain three checks and balances that are in place in south africa that control and regulate the media
asked by Cynthia on March 6, 2012 -
History
European immigration in the 19th century was lower in South Carolina than it was in many other areas because the state what ?
asked by Asia on April 20, 2012 -
English
I need to think of some expressions or idioms involving Mexico, along the lines of "spice it up" "south of the border" or anything else anyone can think of. Gracias!!
asked by Courtney on October 30, 2008 -
Social Studies
What were the major people that took part in the gold that was present in south africa between 1800 and 1914?
asked by Cupcake on February 4, 2010 -
Social Studies
Natural resources of South Carolina such as forests, fish, game, types of trees?
asked by Cheyenne on October 8, 2009 -
Life Orientation
Name and explain 3 checks and balances that are in place in South Africa that control and regulate media
asked by D.A MOKOMA SECONDARY on March 15, 2012 -
English
This piece focuses on the increase use of smartphones of youths in South Korea. Should I reword that phrase?
asked by Jess on May 14, 2014 -
5th grade
I am studying South Carolina and information on physical features, landforms, bodies of water?
asked by Cheyenne on October 8, 2009 -
Ralebitso.s.s.s
critically evaluate how the south Africa media(print and electronic),report on xenophobia
asked by pepenene mpuelleng on May 20, 2016