# 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.

100,421 results, page 68
1. ## Math

The speed of light is 3¡Á¡¼10¡½^8 meters/second. It takes 5¡Á¡¼10¡½^2seconds for light to travel from the sun to the earth. What is the distance in meters between the sun and the earth? Express your answer in scientific notation.

asked by Howayda on January 10, 2016
2. ## math

The space station is going 17500 mph as it orbits the earth. How long will it take to orbit 1 time if the earths diameter is 7926 miles and the space station orbits at 240 miles above the earth.

asked by Bob on March 25, 2012
3. ## Physics

1. Planet X orbits the sun with a mean orbital radius that is 6200 times that of earth. Its diameter is twice that of earth, and its mass is 8 times that of earth. A) Calculate the year of the planet X. B) Calculate the acceleration due to gravity on

asked by Sandhya on April 22, 2009
4. ## Social Studies

Where in North America did the Mound Builders live? in the Southwest in the Northwest in the Central Mexico in eastern North America THIS ONE Which statement best describes the agriculture of the Mayas Each year, they rotated the kinds of crops planted.

asked by Valerie on September 27, 2017
5. ## history

Which identifies why the Nixon administration decided to bomb Cambodia? a. North Vietnamese troops were using trails into Cambodia to get supplies. b. Cambodia secretly decided to ally with North Vietnam and planned to attack US forces. c. Ho Chi Minh was

asked by Charlie on August 21, 2018
6. ## Physical Science

Galaxy A is 600 million light years from earth. Galaxy B is moving away from the earth at a speed that is 80% as large as that of Galaxy A. How far from earth is Galaxy B? A. 750 million light years. B. 640 million light years. C. 540 million light years.

asked by Anonymous on October 27, 2011
7. ## physics

Jessica weighs 540 Newtons, According to Newton's 3rd law, if the Earth pulls on Jessica 540 N, then Jessica pulls on the Earth 540 N acting in the opposite direction. If she trips while rollerblading, why will she fall to the ground

asked by Kelli Kenyon on May 2, 2011
8. ## physics

Consider a spacecraft that is to be launched from the Earth to the Moon. Calculate the minimum velocity needed for the spacecraft to just make it to the Moon’s surface. Ignore air drag from the Earth’s atmosphere. Hint: The spacecraft will not have

asked by bee-z on October 24, 2012
9. ## Geometry

A satellite has-recently been placed in a nearly circular orbit 2000 kilometers above the earth’s surface. Given that the radius of the earth is approximately 6400 kilometers and that the satellite completes its orbit in 12 hours, calculate the speed of

asked by Keenan on May 17, 2011
10. ## physics

Consider a spacecraft that is to be launched from the Earth to the Moon. Calculate the minimum velocity needed for the spacecraft to just make it to the Moon’s surface. Ignore air drag from the Earth’s atmosphere. Hint: The spacecraft will not have

asked by Anonymous on October 24, 2012
11. ## math

A man travels 4km due north,then travels 6km due east and further travels 4km due north .how far he is from the starting point.

asked by nripesh on April 22, 2013
12. ## physics

A plane flies from base camp to Lake A, 220 km away in the direction 20.0° north of east. After dropping off supplies it flies to Lake B, which is 150 km at 30.0° west of north from Lake A. Graphically determine the distance and direction from Lake B to

asked by carlton on September 12, 2012
13. ## science help PLS

Which of the following correctly describes a way in which Earth’s atmosphere interacts with the geosphere? It contains gases that living organisms breathe. It contains gases that trap incoming solar radiation. It provides a medium for cycles that provide

asked by Oscar on December 15, 2015
14. ## Math

A jet is flying through wind blowing 55mi/h at a bearing (clockwise from north) of 35°. The jet is flying with a speed of 550 mi/h at a bearing of 65°. Find the resultant of the planes velocity vector and the winds velocity vector. Also find its

15. ## MATH!!!!

The CN Tower is 553m high. A person in a boat on Lake Ontario, at a point B due south of the tower, observes the top (T) of the tower at an angle of elevation of 8 degrees. At the same time, another person, at a point C on a bearing {S 85 degrees E } from

asked by Kaitlin on September 26, 2006
16. ## physics

please help find the resultant of these two vectors: 2.00 * 10^2 units due east and 4.00 * 10^2 units 30.0degrees north of west please show me step by step how to do this thanks for any help!

asked by y912f on February 13, 2009
17. ## Physics

A boat is rowed due North at 7.0 km/h directly across a river that flows due East at 4.0 km/h. Find the boat's resultant speed.

asked by Tony on April 15, 2010
18. ## physics

A car travels 3.0km due west and then 2.0km to the north. Find the magnitude and direction of the car’s resultant displacement?

asked by Andy on February 3, 2014
19. ## physics

An object is acted by 3 coplanar forces:30 newton to the north, 20 in the direction S20degrees E and 25 newton in a direction W20degrees S.Find the resultant

asked by Jas on April 5, 2011
20. ## science

Which statement best describes Newton’s Law of Universal Gravitation? A.Large objects, like Earth and the Sun, attract other objects everywhere in the universe. B.Gravity is a kind of magnetic force between objects and Earth. C.Gravity is the result of

asked by victoria on February 17, 2014
21. ## physics

The polar ice caps contain about 2.76E+19 kg of ice. This mass contributes negligibly to the moment of inertia of Earth because it is located at the poles, close to the axis of rotation. Estimate the change in the length of the day that would be expected

asked by Jordan on April 9, 2010

An astronaut stands at a position on the Moon such that Earth is directly overhead and releases a Moon rock that was in her hand. (c) What is the gravitational force exerted by the Earth on the same 2.7-kg rock resting on the surface of the Moon? answer in

23. ## Precalculus

A ship is heading due north at 10 mph. The current is flowing southwest at 3 mph. Find the actual bearing and speed of the ship.

asked by KG on December 12, 2017
24. ## physics

HELP PLEASE!!! A satellite moves in a circular orbit around Earth at a speed of 5085 m/s. (a) Determine the satellite's altitude above the surface of Earth. (b) Determine the period of the satellite's orbit.

asked by bill on September 21, 2010
25. ## physics

find the force and force direction of a 1.0x10^-6 C charge that is 2cm North and 3cm East of a 2x10^-6 C charge

asked by sammeh on November 27, 2009
26. ## bio

4. During the process of photosynthesis, light energy is used directly in the A. formation of ATP B. reduction of NADP C. excitation of chlorophyll electrons D. splitting of carbon dioxide molecules I think it is a or d but i am unsure... It is a or d.

27. ## ahmadu university zaria nigeria

Ship A is sailing due south at 25 km/hr. At the same time, a second ship B, 50km miles south of A, is sailing due east at 20 km/hr. (a) at what rate are they approaching or separating at the end of one hour? (b) At what rate are they approaching or

asked by agora on May 2, 2013
28. ## Physics

A satellite with an orbital period of exactly 24.0 h is always positioned over the same spot on Earth. This is known as a geosynchronous orbit. Television, communication, and weather satellites use geosynchronous orbits. At what distance would a satellite

asked by Becky on March 29, 2011
29. ## history SUE HELP MEEEE

Which of the following correctly describes an example of how climate affected the settlement of countries in North America? Most of the people in the United States settled in the Midwest, where temperatures are less extreme.*** Most of Canada’s

asked by PLS HELP ME on February 19, 2016
30. ## Physics

Emmy kicks a soccer ball up at an angle of 45° over a level field. She watches the ball\'s trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. Assume that air resistance is negligable, and plot the

asked by Breauna on February 13, 2015
31. ## geography

How many degrees of latitude and longitude separate a location at the intersection of the international date line and the antarctic circle from another location at the intersection of the prime meridian and the tropic of cancer? The Antarctic Circle is at

asked by lisa on January 29, 2007
32. ## USA Colonists History

|rich soil |available land |wildlife |sea life |forests |fresh water |minerals such as water Many people from Europe came to North America during the 1600s and 1700s to explore the land and make money. using information from the chart above and your own

asked by I and Me on June 13, 2014
33. ## AP US History

In the early 19th century, Americans sought to resolve their political disputes through compromise, yet by 1860 this no longer seemed possible. Analyze the reasons for this change. Im having problems finding information to support this. This is my

asked by Morgan on January 3, 2013
34. ## Physics

In an attempt to reduce the extraordinarily long travel times for voyaging to distant stars, some people have suggested traveling at close to the speed of light. Suppose you wish to visit a star which is 410 ly away, and that you want your 24000 kg rocket

asked by Chris Sanchez on May 13, 2011

Electric charges that are different attract each other. repel each other. **** exist in pairs. do not interact. Magnetic field lines around a bar magnet are only perpendicular to the magnet. spread out from one pole and curve around to the other. ****

asked by HeELP ME FAST!!! on May 23, 2014
36. ## Social Studies

Which Reconstruction plan divided the South into military districts? Choices are: A. the 100% plan B. Johnson's plan C. Lincoln's plan D. the Radical Republican plan Please help. Cant find answer.

asked by Samantha on February 17, 2012
37. ## Dav nandraj:science

A man moves 3.5m towards east then he moves 2m in south then 4.5m towards east. Find its distance and displacement.

asked by Suman on July 6, 2012
38. ## physics

A person walks 37.0◦ north of east for 5.00 km. Another person walks due north and due east to arrive at the same location. How large is the east component of this second path?

asked by KDRAG on September 27, 2010
39. ## physics

An airplane is flying with a speed of 240 km/hr at an angle of 27 degrees north of east. a) How fast is the plane flying north? b) How fast is the plane flying east?

asked by jacob on September 30, 2010
40. ## Math

Geometry- Three streets intersect with one another. East Street runs horizontally,North Street runs vertically and Fourth Street runs diagonally and intersects both East Street and North Street. What geometric figure do the three streets form?

asked by Bryce on January 30, 2012
41. ## History

North America Foods - Exported to Chilles---------------South Asia Sweet potatoes------- China Corn -----------------China, Africa Manioc----------------Africa Tomatoes--------------Europe Based on the chart and what you know of the Columbian Exchange,

asked by Allikay on September 29, 2016
42. ## History

North America Foods - Exported to Chilles South Asia Sweet potatoes China Corn China, Africa Manioc Africa Tomatoes Europe Based on the chart and what you know of the Columbian Exchange, which statement best explains why people in West Africa eat manioc?

asked by Allikay on September 29, 2016
43. ## Calculus

A team has been working to convert diesel-powered cars to run just as efficiently on used cooking oil! They want to compare the mileage and speed of their prototype with that of the diesel-powered car. The prototype is 100 meters south of an intersection,

asked by Cynthia on August 1, 2011
44. ## history1301

I need some History help! Its US History. OK first of all I would like to post the question I need help answering. I also would like to post another question that I have answered and see if it was the right answer that I came up with. thanks for the help!

asked by beth on December 6, 2009
45. ## trig

An airplane has air speed of 540 mph and a heading of 50*. The wind is blowing from the north at 27 mph. Find the plane's ground speed and course direction.

asked by Marlo on April 10, 2014
46. ## trigo

A plane in calm weather flies east at 20 K.P.H. A 45 K.P.H wind blows from the north. Find the direction and speed required to keep the plane in it's original course and speed.

asked by carl on November 21, 2015
47. ## Trigonometry

A plane is headed due east with airspeed of 240 mph. if a wind at 40 mph is bloiwing from the north , find the ground speed of the plane.

asked by Roy on September 9, 2012
48. ## Science

Explain the following quote: ... it was several weeks before an emigrant from Earth could adapt to it. On the Moon the human body had to learn a whole set of reflexes. It had, for the first time, to distinguish between mass and weight. A man who weighed

asked by Kimmy on October 2, 2014
49. ## history

1. what impact did the education improvement act of 1984 have on south carolina a. South carolina teachers were paid the most in the southeast b. the state's schools were ranked the lowest in the nation c. fewer students took high school exit exams d. the

50. ## physicccccccccccccc

I did answered my question but not sure weather is correct or not 1)How is X-ray produced and why can it be used to help us see the structure inside the body? X-rays are produced when electrons strike a metal target. The electrons are liberated from the

asked by john on May 6, 2017
51. ## physics

The Moon has a mass of 7.35  1022 kg and its equatorial radius is 1.74  106 m. Earth’s mass is 5.97  1024 kg and its equatorial radius is 6.38  106 m. (a) Calculate the magnitude of the gravitational force exerted by i) the Moon on a fully suited

asked by jake on July 8, 2013
52. ## Calculus

An airplane has airspeed of 724 k/h at bearing of North 30 degrees East. If the wind velocity is 32 from west. find the ground speed and direction of plane. Teacher gives solution of 740.5 k/hr and 57.9 degrees. Can anyone show steps?

asked by Trey on June 1, 2015
53. ## science

I need to find a thin layer of ice that has condensed? go north :-) or... Put 1/3 cup of hot water in the freezer with a piece of plastic over it. The warm moist air will rise and condense on the plastic lid and freeze there.

asked by albia on March 14, 2007
54. ## math/chem

it is estimated that uranium is relatively common in the earth's crust, occurring in amounts of 4 g/metric ton. a metric ton is 1000kg. at this concentration, what mass of uranium is present in 1.0 mg of earth's crust?

asked by Joe on August 23, 2010
55. ## Chemistry

It is estimated that uranium is relatively common in the earth’s crust, occurring in amounts of 4 g/metric ton. A metric ton is 1000 kg. At this concentration, what mass of uranium is present in 1.0 mg of the earth’s crust?

asked by Leo on February 15, 2010
56. ## physics

Calculate the angular momentum of the Earth the arises from its spinning on its axis. Also calculate the angular momentum of the Earth that arises from its orbital motion around the sun. Please help I'm stumped on a take home test.

asked by nouh on May 8, 2016
57. ## science

Granite is an igneous rock that forms from magma cooled below Earth's surface.Why would granite have larger crystals than igneous rocks formed from lava cooled above Earth's surface?

asked by Anonymous on January 29, 2014
58. ## Physics- Relativity

A lighthouse sweeps its beam of light around in a circle once every 7.2 s. To an observer in a spaceship moving away from Earth, the beam of light completes one full circle every 9 s. What is the speed of the spaceship relative to Earth

asked by John on September 9, 2015
59. ## trig

You are sky diving and are trying to land on a target with a radius of 15 m. You land 10 m west and 10 m north of the center of the target. a. Write an inequality to describe the region inside the target area. b. Do you land within the target area? c. If

asked by Elle on December 20, 2011
60. ## Physics

An object moves a to b, 4kms due west and then moves from b to c, 3kms due north. Find the displacement

asked by JR on August 20, 2015
61. ## Maths

A 40m deep well with radius 3.5m is dug and the earth taken out is evenly spread to form a platform of dimensions 28m by 22m.find the hight of the platform.

asked by Anonymous on April 7, 2013
62. ## Maths

A 40m deep well with radius 3.5m is dug and the earth taken out is evenly spread to form a platform of dimensions 28m by 22m.find the hight of the platform.

asked by Anonymous on April 7, 2013
63. ## Maths

A 40m deep well with radius 3.5m is dug and the earth taken out is evenly spread to form a platform of dimensions 28m by 22m.find the hight of the platform.

asked by Anonymous on April 7, 2013
64. ## Maths

A 40m deep well with radius 3.5m is dug and the earth taken out is evenly spread to form a platform of dimensions 28m by 22m.find the hight of the platform.

asked by Anonymous on April 7, 2013
65. ## physics

A) What is the minimum speed, relative to the Sun, necessary for a spacecraft to escape the solar system if it starts at the Earth's orbit? B) Voyager I achieved a maximum speed of 125 000 km/h on its way to photograph Jupiter. Beyond what distance from

asked by jean on May 30, 2007
66. ## SAT Essay

I did exactly what I was told to do, I started from scratch. Any better? Topic: At a recent conference on global issues, several panels debated possible solutions to problems facing the world today. There is no consensus on the solutions or even on the

asked by Sahil on August 26, 2008
67. ## english

Read this excerpt from â€œAinâ€™t I a Woman?â€ by Sojourner Truth. In which sentences does she make an emotional appeal to the audience by talking about her personal hardships? 1). I think that 'twixt the negroes of the South and the women at

asked by marie on March 14, 2017
68. ## Ethics

1. Hill claims that a fruitful way to think about the badness of destroying the environment is? To think about what kind of human would choose to destroy the earth. To appeal to theories about God and care for the earth. To examine people’s intuitions

asked by Darcy Deagan on August 8, 2014
69. ## science

. How does the principle of uniformitarianism accounts for occasional catastrophic events such as meteorite impacts, huge volcanic eruptions, or great earthquakes? In what ways do geologic processes affect a person's daily life? . When astronauts brought

asked by bubba on May 23, 2011
70. ## World Geography

South America is a realm of diverse cultural landscapes and numerous immigrant sources. Some countries that are relatively homogeneous culturally, such as Columbia and Venezuela, are as divided politically and economically as are other countries with

asked by Stephanie on February 10, 2009
71. ## Physics

Let's say that the force of gravity on the equator of the Earth is 9.81 m/s^2 what is the magnitutde of gravity of something at 41.603221,-73.087749 ???? I'm guessing that 41.603221,-73.087749 is lattitude and longittude so I really have no idea what to

asked by HELP ME! on May 19, 2009
72. ## Physics

If you were to push a pile of books across a table, in which location would this be the easiest? The moon(my choice) Earth Same amount no matter the location Jupiter Suppose a large pizza is placed on earth, the moon, and Jupiter. In each location, the

asked by Pookie on October 1, 2018
73. ## pre calc

The velocity of an aiplane heading east at 400 knots and a wind velocity of 50 knots northeast. The airplane encounters this wind, show the resultant velocity. What is the resulant speed and direction of the airplane? (the direction is the angle the

asked by Julie on March 31, 2008
74. ## physics

In a marathon race Chad is out in front, running due north at a speed of 3.87 m/s. John is 98 m behind him, running due north at a speed of 4.63 m/s. How long does it take for John to pass Chad?

asked by Redgy22 on September 13, 2012
75. ## Physics

In a marathon race Chad is out in front, running due north at a speed of 3.98 m/s. John is 95 m behind him, running due north at a speed of 4.52 m/s. How long does it take for John to pass Chad?

asked by Hannah on October 5, 2015
76. ## physics

In a marathon race, Chad is out in front, running due north at a speed of 3.92 m/s. John is 92 m behind him, running due north at a speed of 4.33 m/s. How long does it take for John to pass Chad?

asked by Dee on January 31, 2013
77. ## physics

In a marathon race, Chad is out in front, running due north at a speed of 3.92 m/s. John is 94 m behind him, running due north at a speed of 4.33 m/s. How long does it take for John to pass Chad

asked by jessica on May 23, 2016
78. ## physics

In a marathon race, Chad is out in front, running due north at a speed of 4.09 m/s. John is 94 m behind him, running due north at a speed of 4.28 m/s. How long does it take for John to pass Chad?

asked by Rhonda on January 27, 2016
79. ## Physics

On Earth a fit astronaut without a space suit and life support pack can leap straight up and leave the ground with an initial vertical velocity of about v1y = 2.4 m/s and rise to a height of about h = 0.24 m above the point where he first loses contact

asked by Alexandra on September 17, 2014
80. ## Physics

(c) On Earth a fit astronaut without a space suit and life support pack can leap straight up and leave the ground with an initial vertical velocity of about v1y = 2.4 m/s and rise to a height of about h = 0.24 m above the point where he first loses contact

asked by Alexandra on September 17, 2014
81. ## calculus

Two cars start from the same point at the same time. One travels north at 25 mph, and the other travels east at 60 mph. How fast is the distance between them increasing at the end of 1 hr? Find D after 1 Hr, solve D^2=25^2+ 60^2

asked by Allison on October 23, 2012

I need to find out events that are part of adolescences lives in korea. ex.birthday.. thanks! .. btw, would Koreans celebrate their 16th birthday party like how they celebrate it in North America?

asked by Kim on January 15, 2008
83. ## Physics

Using GRAPHICAL METHOD, find the vector sum of a force of 20 N directed 60 degrees east of north and a force of 60 N directed west? Please show all steps and equations used.

asked by Alyssa on September 19, 2015
84. ## Geography

Employment opportunities were limited in Tijuana. Manuel, who had been unemployed for several months, decided to join a group of people traveling north to find work. What concept is described by the paragraph above? A)population growth B)urbanization

asked by george on December 15, 2009
85. ## world geography

Employment opportunities were limited in Tijuana. Manuel, who had been unemployed for several months, decided to join a group of people traveling north to find work. What concept is described by the paragraph above? a)population growth b)urbanization

asked by ty washington on October 27, 2014
86. ## Geography

Employment opportunities were limited in Tijuana. Manuel, who had been unemployed for several months, decided to join a group of people traveling north to find work. What concept is described by the paragraph above? a)population growth b)urbanization

asked by george on December 15, 2009
87. ## Math

A team has been working to convert diesel-powered cars to run just as efficiently on used cooking oil! They want to compare the mileage and speed of their prototype with that of the diesel-powered car. The prototype is 100 meters south of an intersection,

asked by Anonymous on August 2, 2011
88. ## calculus

A team has been working to convert diesel-powered cars to run just as efficiently on used cooking oil! They want to compare the mileage and speed of their prototype with that of the diesel-powered car. The prototype is 100 meters south of an intersection,

asked by need help! on August 1, 2011
89. ## physics

An airplane flies 200 km due west from city A to city B and then 340 km in the direction of 35.0° north of west from city B to city C. (a) In straight-line distance, how far is city C from city A? (b) Relative to city A, in what direction is city C? °

asked by joe on September 24, 2010
90. ## physics

An airplane flies 200 km due west from city A to city B and then 280 km in the direction of 30.5° north of west from city B to city C. (a) In straight-line distance, how far is city C from city A? in km? (b) Relative to city A, in what direction is city

asked by Elisa on June 1, 2008
91. ## physics

An airplane flies 200 km due west from city A to city B and then 260 km in the direction of 32.0° north of west from city B to city C. (a) In straight-line distance, how far is city C from city A? ?km (b) Relative to city A, in what direction is city C?

asked by Shetina on February 10, 2008
92. ## s

According to science, the fastest speed possible for anything is the speed of light. The speed of light is about 186,000 miles per second. That means that in one minute, light travels 11,160,000 miles. The star nearest Earth is the Sun. It's about

asked by pamela on June 3, 2013

According to science, the fastest speed possible for anything is the speed of light. The speed of light is about 186,000 miles per second. That means that in one minute, light travels 11,160,000 miles. The star nearest Earth is the Sun. It's about

asked by Tazkiyah on March 6, 2014

According to science, the fastest speed possible for anything is the speed of light. The speed of light is about 186,000 miles per second. That means that in one minute, light travels 11,160,000 miles. The star nearest Earth is the Sun. It's about

asked by Anonymous on October 19, 2012
95. ## Math

A Kenyan bank buys and sells foreign currencies Buying (Ksh) Selling(Ksh) 1 Sterling pound 130.10 130.54 1 South African Rand 9.52 9.8 A businessman on a trip to Kenya had pound 50,000 which he coneveted to Kenya shillings. While in Kenya, he spent 80% of

asked by Kd on October 3, 2018
96. ## Science

Which of the rock-forming mineral groups makes up the largest group of minerals in the Earth's crust? Look here for your answer. http://www.google.com/search?hl=en&lr=&ie=ISO-8859-1&q=minerals+earth%27s+crust&btnG=Search

asked by Liz on October 3, 2006
97. ## math

The cruising speed of a Boeing 767 in still air is 530 mph. Suppose that a 767 is cruising directly east when it encounters an 80 mph wind blowing 40 degrees south of west. Sketch the vectors for the velocities of the airplane and the wind. Express both

asked by Connie on February 17, 2014
98. ## Social Studies

In which region of Asia would you find the Gobi Desert? a. East Asia b. Western Asia c. South Asia d. Southeast Asia

asked by Kaai97 on October 16, 2015
99. ## Physics Check

Since I've been waiting to get my answers checked for my submission #2, I moved on to my submission #3 and I need some questions checked for my submission #3 please. 1.)If a blue car drives 10km/h across the deck of an ocean liner that is traveling at

asked by Ariel on July 12, 2010
100. ## physics

Suppose that the displacement of a particle is related to time according to the expression delta x = ct^3. What are the SI units of the proportionality constant c? My answer: delta x = ct^3 m = c s^3 (s: seconds) m/s^3= c The SI units for c: m/s^3 correct?

asked by galileo on January 15, 2007