# 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.

99,837 results, page 13-
## Algebra

A balloon is secured to rope that is staked to the ground. A breeze blows the balloon so that the rope is taut while the balloon is directly above a flag pole that is 30 feet from where the rope is staked down. Find the altitude of the balloon if the rope -
## algebra

Guy wire. How long is a guy wire reaching from the top of a 24ft ploe to a point on the ground 16 feet from the pole What is the exact length? what is the lenght approximated to three decimal palces? -
## physics

The force on a wire is a maximum of 6.00\times 10^{ - 2} {\rm{N}} when placed between the pole faces of a magnet. The current flows horizontally to the right and the magnetic field is vertical. The wire is observed to "jump" toward the observer when the -
## biomechanics

A 50 kg pole vaulter has a horizontal velocity of 8 m/s at the completion of her approach run, and her center of gravity is 1.0 m high. Estimate how high she should be able to vault if her kinetic and potential energies were all converted to potential -
## Math

bearing of a tower are taken from two points.A and B 250m apart along a straight north-south path, A being due north of B. the bearing of the tower from A and B are 140* and 110* respectively. what is the distance from A to B. -
## geography

Which statement best describes the location of south west Asia ? A. north of Australia and west of Europe B. west of the Indian Ocean and east of the Mediterranean Sea C. south of the Arctic Circle and north of Antarctica. D. east of the Americas and west -
## Chemistry

Basically as you know the electrons circle the nucleus well in that first ring how many elcetrons are there, in the second and so forth Here are the "ring" number, when filled: 2n^2 where n is the ring number: example n= 3, the third" ring" 2*3^2= 18 No, I -
## Math

You start searching for a buried object by marking the center of a field as (0, 0), with coordinates giving distances in yards. Coordinates to the north or east are positive, and coordinates to the south or west are negative. You find nothing at (-10, 6), -
## Math (please help me)

You start a search for a buried object by marking the center of a filed as (0,0), with coordinates giving distances in yards. Coordinates to the north or east are positive and coordinates to the south or west are negative. You find nothing at (-10,6), so -
## Geography

Q. The Great Lakes border 2 regions and 2 countries, name them. - Regions: Pacfic Rocky Mountains Southwest North central South east North east - A. I don't exactly get it, -
## History

John Brown, supported by abolitionists and Republicans, tried to start a slave revolt. Therefore be it resolved that the defense of slavery is a common cause to all Southern states. At the call of any Southern state, we are authorized to send troops and -
## us history

John Brown, supported by abolitionists and Republicans, tried to start a slave revolt. Therefore be it resolved that the defense of slavery is a common cause to all Southern states. At the call of any Southern state, we are authorized to send troops and -
## Physics

A person walks the path shown below. The total trip consists of four straight-line paths. Path 1 is 30.0 m due east. Path 2 is 200.0 m due south. Path 3 is 140.0 m 30.0° south of west. Path 4 is 170.0 m 60.0° north of west. At the end of the walk, what -
## history

Okay, let me get this straight. In the American Civi War, the North was called the Union, the Yankees, or the Rebels, and the South was called the Confederate or the federals? Not quite. North = Union, Yankees, federals South = Confederates, rebels I -
## Social Studies

What were Truman’s two goals during the Korean War? A. to punish the Soviet Union for its aggression and unite Korea B. to punish North Korea for its aggression and unite Korea C. to defeat North Korea and fire General MacArthur D.to take South Korea as -
## math

You start a search for a buried object by marking the center of a field as (0, 0), with coordinates giving distances in yards. Coordinates to the north or east are positive, and coordinates to the south or west are negative. You find nothing at (–5, 3), -
## physics

Would someone check my thinking please. A solid sphere (mass, r, and moment of inertia given) is rotating at a given angular speed. Friction is constantly applied at the 'equator' of the sphere, and brings it to rest in 3s. Find the force. I worked out the -
## Physics

A relay race is run along a straight line track 300.0 m long running south to north. 1st runner - starts at the South end of the track and passes the baton to a teammate at the north end of the track. 2nd runner - races back to the start line and passes -
## math

How do we find the vector for this situation? Andrea runs 2 km south, then turns around and runs 3 km north. -
## Social Studies

I need to list 10 countries in the North and 10 countries in the South during slavery times. Can't find anything. Please help. Thank you. -
## Momentum

A 1400 kg car moving south at 11.5 m/s collides with a 2800 kg car moving north. The cars stick together and move as a unit after the collision at a velocity of 5.24 m/s to the north. Find the velocity of the 2800 kg car before the collision. -
## stuck

A 1100 kg car moving south at 16.0 m/s collides with a 2650 kg car moving north. The cars stick together and move as a unit after the collision at a velocity of 5.36 m/s to the north. Find the velocity of the 2650 kg car before the collision. -
## History

Which of these was the MOST important result of the deaths of much of the Indian population in South America? A) The importation of slaves from Africa B) The removal of the Jesuits from South America C) The call for an end to colonization of the Americas. -
## Physics

A person walks the path shown below. The total trip consists of four straight-line paths. Path 1 is 40.0 m due east. Path 2 is 170.0 m due south. Path 3 is 120.0 m 30.0° south of west. Path 4 is 190.0 m 60.0° north of west. At the end of the walk, what -
## Physics

On June 9, 1988, Sergei Bubka broke the world pole-vaulting record for the 8th time in four years by attaining a height of 6.14 m. How long was Bubka in the air for this record setting vault? -
## Physics

A 52.4 kg pole vaulter running at 10.8 m/s vaults over the bar. The acceleration of gravity is 9.81 m/s2 . If the vaulter’s horizontal component of ve- locity over the bar is 0.60 m/s and air resis- tance is disregarded, how high is the jump? Answer in -
## Int Algebra

2nd question Flagpole is secured on opp. sides by 2 wires. each of which is 5 ft longer that the pole. Distance between the points where the wire are fixed = to the length of one wire. How tall us flagpole to nearest inch? -
## diffirential calculus

a pole 27ft long is carried horizontally along a corridor 8ft wide and into a second corridor at right angles to the first. how wide must the secon corridor be? -
## Math

Rosario noticed that the distance from the pole in the center of the tetherball circle to the painted circle was about six feet.What was the approximate radius of the tetherball circle? -
## 4th grade math

The distance from the pole in the center of the tetherball circle to the painted circle was about six feet. What was the approximate radius of the tetherball circle? Thank you. A. 12 ft B. 4 yd C. 3 ft D. 2 yd -
## Mathsw

A man 6 feet tall is standing 9 feet from a 18 feet tall light pole. His shadow cast 15 degree. What is the angle formed from this equation? -
## Physics

In a fireworks display a 3 kg body moving at 4 km/h due north explodes into three equal pieces: A, at 4 km/h east; B, at 5 km/h 37 degrees south of west; and C, at 15 km/h due north. After the explosion, what is the total momentum of all the pieces? -
## Reading

in which hemisphere do you find both north america and south america -
## math

a vertical pole 5 feet long casts a shadow of 2 feet if at the same time a nearby shadow of 10 feet how tall is the tree -
## physics

Vector has a magnitude of 136 units and points 35.0 ° north of west. Vector points 69.0 ° east of north. Vector points 19.0 ° west of south. These three vectors add to give a resultant vector that is zero. Using components, find the magnitudes of (a) -
## physics

Vector has a magnitude of 113 units and points 34.0 ° north of west. Vector points 63.0 ° east of north. Vector points 17.0 ° west of south. These three vectors add to give a resultant vector that is zero. Using components, find the magnitudes of (a) -
## physic

Hi!Question: A river flows due east at 1.70m/s.A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 8.0m/s due north relative to the water. A.What is the velocity of the boat relative to shore?___m/s and -
## math

Can someone please take a look at these results and make sure they're correct? Thank you! 5. The Leaning Tower of Pisa leans toward the south at an angle of 5.5 degrees. One day near noon its shadow was measured to be 84.02m long and the angle of elevation -
## Physical Science

Need help with these questions: 1.When a calcium atom forms an ion, it loses two electrons. What is the electrical charge of the calcium ion? A.-2 B.-1 C.+2 D.+1 2.Which particle builds a static electrical charge when it is transferred from one object to -
## social studies

Say during the civil war the southhad the same amount of people as the north. Would they south win?? Probably not. The South didn't have the industries, the money, or the moral imperative to win the Civil War. During the American Civil War, the determining -
## physical geography

How many miles are between the tropics of cancer and capricorn if you travel directly north and south? The Tropic of Cancer and the Tropic of Capricorn each lie at 23.5 degrees latitude. The Tropic of Cancer is located at 23.5° North of the equator and -
## Physics

Which describes the greatest displacement? - walking 3 m east then 3 m north, then 3 m west - walking 3 m north, thrn 3 m west, then 3 m south -
## Physics

a hiker walks 14.7 km at an angle 35 degrees south of east. Find the east and north components of this walk. -
## Physics

a hiker walks 14.7 km at an angle 35 degrees south of east. Find the east and north components of this walk. -
## Physics

A 343-kg boat is sailing 16.2° north of east at a speed of 1.98 m/s. Thirty seconds later, it is sailing 37.5° north of east at a speed of 3.76 m/s. During this time, three forces act on the boat: a 30.3-N force directed 16.2° north of east (due to an -
## Math

The distance from the pole in the center of the tetherball circle to the painted circle is about 6 feet. What was the approximate radius of the tetherball circle? -
## Math 8R - HELP!!!!!

Mr. Martanarie bought a new lamp and lamppost for his home. The pole was 6 5/8 ft tall and the lamp was 1 1/4 ft in height. How tall were the lamp and post together? -
## math

how tall is a flag pole when a person is standing 12 meters away and he is 1.5 meters tall and casts a shadow 3 meters long? -
## physics

At a point high in the Earth’s atmosphere, He 2+ ions in a concentration of 2.8 X 1012/m3 are moving due north at a speed of 2.0 X 105 m/s. Also, a 7.0 X 1011/m3 concentration of O2 ions is moving due south at a speed of 7.2 X 106 m/s. Determine the -
## LA

why does squeaky not know at first who has won the race in "Raymond's Run"? A. Raymond has climbed the fence. ***? B. The May Pole gets in the way. C. The finish is very close. D. Mr. Pearson speaks too softly. Search in "Raymond's Run" on Google to see -
## physics

if a car moves 12km North, 19km East, and 12km South, a) Find the total distance covered. b) Find the car's displacement. -
## Chemistry

For a Sc atom in ground electronic state: 1. how many electrons are there in 4s orbitals? 2. how many electrons are there in 3d orbitals? 3. how many electrons are there in 4p orbitals? 4. how many unpaired electrons are there? 5. to what block does Sc -
## HURRY........quick post

Simpson drives his car with an average velocity of 1.2 m/s to the north from the bust stop to the museum entrance. What is your displacement? Look back at the previous question. How much time would Simpson save by increasing his average velocity to 56.0 -
## English

1. In America, when they show the temperature, people use Farenheit. However, in our country, we use Celsius. 2. New Zealand is composed of the South Island and the North Island. It rains a lot in July and August in the mountainsides in the South Island. -
## Physics

A boy travels 8km north, 3km east and then 5km south. Find the magnitude of displacement of the boy -
## precalculus

Can you please check and correct my answers? Convert to Rectangular: r*tanΘ/secΘ=2 ________________________________________ y=2 y=½ x=2 x=½ answer: y=2 Given: 5cos6Θ What is the shape of the function? ________________________________________ Limacon -
## physics

At a certain location on the Earth, the horizontal component of the Earth’s magnetic field is 2.5 ·10−5 T due North. A proton moves eastward with just the right speed for the magnetic force on it to balance its weight so the net force on the -
## Geography

29. Which of the following statements best describes New Zealand's physical landscape? a. the South Island is predominantly flat, while the North Island is covered mostly with elevated plains b. New Zealand's terrain is mostly mountainous, with gentle -
## science

Circle the letter of each sentencethat is true about deep currents. a. they can be thought of as a global conveyer belt. b.it takes them about ten years to flow from the pole to the equator and back. c. they transfer heat through the ocean d. they bring -
## physics

A mass of 1.1 kg is attached to two cords. The cords are each an angle 30 degrees above and below the horizontal, The mass circles around the vertical pole at a fixed speed of 15 m/s in a circle of radius 0.50 m. How do I calculate the magnitude of the net -
## Math

A 30-m tall flag pole and its shadow form the sides of a right triangle. On this particular day, the sun rises at 6 AM and sets at 6 PM. At what time of the morning (to the nearest minute) will the length of the shadow be exactly 40 m? (Hint: determine the -
## Physics

Three forces act on an object at the same time. F1 = 10.0 N 50.0degrees north of east, F2 = 15.0 N 25.0degrees south of west, and F3 = 15.0 N 38.0degrees east of south. What is the magnitude and direction of the net force? -
## Science 8th Grade

What was the hiker's average velocity? Distance = 6km West Starting Time = 9:45 Ending Time = 10:45 A. 4.0 km/h south B. 0.10 km/h north C. 10 km/h south west D. 6 km/h west -
## physics

A 6 mC charge experiences a force of 6 N directed north. What is the electric field (magnitude and direction) at the location of the charge? Would E=1000 N/C and direction is north Find the force (magnitude and direction) on a -20 mC charge that replaces -
## Physics 11 urgent Steve, bob, damon pls

A 30 kg student pushes a 20kg box on frictionless surface. If student accelerates at 0.8m/s^2(N),what is acceleration of bix. now why does the box acceerate towards south, if it is being pushed north should it not move north. -
## physics

A novice golfer on the green takes three strokes to sink the ball. The successive displacements are 3.80 m to the north, 1.80 m northeast, and 1.00 m at 25.0° west of south. Starting at the same initial point, an expert golfer could make the hole in what -
## AP Physics

A novice golfer on the green takes three strokes to sink the ball. The successive displacements are 3.80 m to the north, 1.90 m northeast, and 1.10 m at 30.0° west of south. Starting at the same initial point, an expert golfer could make the hole in what -
## 1301

It is often assumed that the South had better military leadership. Might it be argued that the South enjoyed superior military leadership in the East, at least until 1864, but that the North had consistently better leadership in the West? -
## geography

1. In what direction does the Nile River flow? The river flows North. 2.Paris,France, is southeast of the itersection of ? degree(s) longitude and ? degree(s) latitude? 0 degrees longitude and 50 degrees latitude 3. Does Mexico have more coastline on the -
## physics

A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 16° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 8.4 N, what is the tension in the -
## physics

A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 21° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 8.3 N, what is the tension in the -
## chemistry

Which of the answers choices best describes John Dalton's contribution to atomic theory? he discovered to nucleus he gave future scientist a foundation for understanding how electrons move. he gave future scientist a foundation for understanding how atoms -
## Polar coordinates

I need some help on this Calculus question about polar coordinates. Consider a pasture bordering on a straight river. At 2m from the river, a goat is tied to a pole with a 4m long rope. What is the area of grass that the goat can graze? There are a couple -
## physics

Forces of 86 N east, 23 N north, 46 N south, 55 N west are simultaneously applied to a box of mass 13.8 kg. Find the magnitude of the box's acceleration? -
## Science

A person moves 30m north, then 20m east and finally 30 root 2m south west. Find the displacement of the person. -
## Physics

1.what is the shortest possible time in which a bacterium could travel a distance of 8.4 cm across a Petri dish at a constant speed of 3.5 mm/s. the answer is 24s. how? 3.An athlete swims from the north end to the south end of a 50.0m pool in 20.0s and -
## south carolina history help me ASAP PLZZZZZ

which state voted first against independence, but eventually voted for it? new york north carolina delaware south carolina -
## Physics

An airplane is traveling v = 850 km/h in a direction 38.5° west of north (Fig. 3-34). Figure 3-34. (a) Find the components of the velocity vector in the northerly and westerly directions. 1 km/h (north) 2 km/h (west) (b) How far north and how far west has -
## Math

A 3 foot long pole leans against a wall. The bottom is 5 feet from the wall. How much farther should the bottom be pulled away from the wall so that the top moves the same amount down the wall? -
## physics

a uniform pole 20 ft. long and weighing 80 lb. is suspected by a boy 2.0 ft.from end A and a man 5.0 ft. from end B .at what point should a load of 100 lb. be placed on so that the man will support twice as much as the boy? -
## PHYSICS CAN ANYONE HELPPPP PLEASE

A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 28° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 11.1 N, what is the tension in the -
## Math

From the top of an 8m house the angle of elevation to the top of the schools flagpole across the street is 9 degrees The angle of depression is 42degrees to the bottom of the pole How tall is the flagpole -
## physics

A copper wire has a circular cross section with a radius of 3.75 mm. If the wire carries a current of 4.00 A, find the drift speed of the electrons in the wire. (Assume the density of charge carriers (electrons) in a copper wire is n = 8.46 *10^28 -
## physics

A copper wire has a circular cross section with a radius of 3.75 mm. If the wire carries a current of 4.00 A, find the drift speed of the electrons in the wire. (Assume the density of charge carriers (electrons) in a copper wire is n = 8.46 *10^28 -
## geography

Thank You and I did some more questions. Can you check them? 1. Is the Antarctic Circle north or south of the equator? South of the equator 2. All lines of longitude are measured east and west of what imaginary line? The Prime Meridian. Ms. Sue the 9th -
## Math

bearing of a tower are taken from two points.A and B 250m apart along a straight north-south path, A being due north of B. the bearing of the tower from A and B are 140* and 110* respectively. what is the distance from A and B to the tower. -
## Physics

Take into account the Earth's rotational speed (1 rev/day) and use 5 significant figures. (a) Determine the necessary speed, with respect to Earth, for a rocket to escape if fired from the Earth at the equator in a direction eastward. (The escape velocity -
## Math 7th grade

I have a question on math if I start to look for a object hidden by making the center of a field as (0,0), with coordinates giving distances in yards. Coordinates to the north or east are positive and coordinates to the south or west are negative. And I -
## math

I have a flagpole 30 feet tall amirror 10 feet from pole and someone standing 2 feet from mirror how tall are they -
## Mathematics

What metric unit would you use to measure the length of 1.a cell phone 2.a basketball court 3.a telephone pole What metric unit would you use to measure the mass of 1.a kitten 2.an orange 3.a bee 4.a horse -
## Mathematics

What metric unit would you use to measure the length of 1.a cell phone 2.a basketball court 3.a telephone pole What metric unit would you use to measure the mass of 1.a kitten 2.an orange 3.a bee 4.a horse -
## Physics

A 301-kg boat is sailing 16.5° north of east at a speed of 2.08 m/s. Thirty seconds later, it is sailing 37.2° north of east at a speed of 3.60 m/s. During this time, three forces act on the boat: a 32.7-N force directed 16.5° north of east (due to an -
## physics

A 301-kg boat is sailing 16.5° north of east at a speed of 2.08 m/s. Thirty seconds later, it is sailing 37.2° north of east at a speed of 3.60 m/s. During this time, three forces act on the boat: a 32.7-N force directed 16.5° north of east (due to an -
## physical geography

If you begin at 20 degrees 47'36" south and 168 degrees 23'46" west, and go 50 degrees north and 50 degrees west of there, where would you be? Give the latitude and longitude exactly in degrees,minutes and seconds. You would be at latitude 29 degrees 12' -
## Social Studies

Read the passage and answer the question that follows: John Brown, supported by abolitionists and Republicans, tried to start a slave revolt. Therefore be it resolved that the defense of slavery is a common cause to all Southern states. At the call of any -
## Physics

At a height of 500km above earth, a satellite will orbit the earth once every 95 minutes. Find the mass of the earth based on this idea. B) How far above earth's surface would a satellite need to orbit so that it revolves at exactly the same rate as the -
## Math

Sarah is standing next to the flag pole waiting for her friends. The flagpole is 42.9 feet tall and casting a shadow of 253.1 feet long. There a sign by the flagpole challenging visitors to find the length of their shadows. Sarah is 5.4 feet tall. What is -
## physics

A car is initially traveling due north at 24.0 m/s. A.) find the velocity of the car after 4.00 seconds if it's acceleration is 1.60 m/s2 due north. B.) find the velocity of the car after 4.00 seconds if it's acceleration is instead 1.95 m/s2 due south. -
## Please Helppp Quickly PHYSICSSSS

A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 28° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 11.1 N, what is the tension in the -
## Nfl

The Detroit lions will cruise to their game by sailing north on the ------- river across lake -- ----- Up the -- ----- river across lake ----- through the straits of -------- a Ross the north end of lake -------- around the tip of the door peninsula and