# 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.

117,802 results, page 41

1. ### physics

The weight of an object on the moon is one-sixth of its weight on the Earth. The ratio of the kinetic energy of a body on the Earth moving with speed V to that of the same body moving with speed V on the moon is:
2. ### physics

In order to change the angular momentum of an object, it is necessary to apply a. a net force to the object. b. a net torque to the object. c. a centripetal acceleration to the object. d. both a net force and a net torque to the object. We have three vectors, labeled A, B, and...
3. ### 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 is the person's ...
4. ### Pre-Calculus

A 15N force acting at 15 degrees north of east and a 18N force acting at 79 degrees north of west act concurrently on an object. What is the magnitude and direction of a third force that produces equilibrium on the object? Show sketch and work. ------ x-component:: 15*cos(15 ...
5. ### 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.
6. ### 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?
7. ### 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 units of m.
8. ### 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?
9. ### physics

A 26 N force and a 42 N force act concurrently at point P. The larger force is directed north and the other acts toward the east. Calculate the resultant force acting on point P.
10. ### Physics - Grade 12

I've been doing extra questions for physics, but these four are still giving me trouble. Please help me solve them, including Free Body Diagrams if possible. 1. If a curve with a radius of 60m is properly banked for a car traveling at 60km/hr, what must the coefficient of ...
11. ### 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?

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
13. ### 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?
14. ### 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?
15. ### 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?

in which hemisphere do you find both north america and south america

Find the resultant force on (a) the mass m1 = 0.183 kg and (b) the mass m2 = 0.106 kg (the masses are isolated from the earth).. The first mass is 400kg and its 10 cm from the second mass which is 0.183 kg (m1). the second mass is 10 cm away from the third mass which is 0.106 ...
18. ### Physics

A ferry is crossing a river. The ferry is headed due north with a speed of 1.7 m/s relative to the water and the river’s velocity is 2.4 m/s to the east. a) What is magnitude of the boat’s velocity relative to Earth? Answer in units of m/s b) Find the direction in which ...
19. ### English

Can you check these sentences for me, please? 1)He is a superstar now and he is slamming (a synonym?) on his guitar. 2)He is responsible for the building (?) of Westminster Abbey. 3)He withdrew from Britain to defend Rome against (or from?) a Barbarian attack. 4)According to ...
20. ### Earth Science

If sea level has risen by 20 cm over the past century on the coast of North America, by how much do you think it has risen over the past century on the coast of India? Explain.
21. ### IPC

The value of acceleration due to gravity (g) on a point 10,000 kilometers above sea level is about 1.49 meters/second2. How much will an object, which weighs 98 newtons on the surface of Earth, weigh on this point? The value of acceleration due to gravity on Earth is 9.8 ...
22. ### Physics

The value of acceleration due to gravity (g) on a point 10,000 kilometers above sea level is about 1.49 meters/second2. How much will an object, which weighs 98 newtons on the surface of Earth, weigh on this point? The value of acceleration due to gravity on Earth is 9.8 ...
23. ### 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
24. ### 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) vector and (b) vector...
25. ### 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) vector and (b) vector...
26. ### gr 12 physics

A person standing at the edge of the water and looking out at the ocean/ The height of the person's eyes above water is h=1.6m. and radius of the earth is R=6.38x10^6m How far is it to the horizon. In other words, what is the distance d from the person's eyes to the horizon? ...
27. ### 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 ___degree(north of east...
28. ### geography

Compare and contrast folded mountains to volcanic mountains. How they are alike? How they are different? i got some of it.. Similarities: Both were probably formed from convergent plate boundaries. Difference: Volcanic Mountains - are mountains that form when molten rock ...
29. ### PHYSICS

1. It is believed that in the Archeaneon (2.5-4 billion years ago) the sun’s radiative output was 30% less than it is today. (i) What would the temperature of the sun have been at that time? (ii) At what wavelength would the peak emission from the sun have been? (iii) ...
30. ### Science

1. It is believed that in the Archeaneon (2.5-4 billion years ago) the sun’s radiative output was 30% less than it is today. (i) What would the temperature of the sun have been at that time? (ii) At what wavelength would the peak emission from the sun have been? (iii) ...
31. ### Geographyand socity

1. _______________________ is the science of predicting the weather. (1 point) Climatology Ecology Meterology Botany 2. _______________________ is the condition of the atmosphere at any given location and time. (1 point) Weather Precipitation Climate Temperature 3. This layer ...
32. ### Physics

I have no idea!!! A river flows due south with a speed of 2.30 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4.50 m/s due east. The river is 900 m wide. In which direction should the motorboat head in order to reach a point on the ...
33. ### 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 from the tip of the ...
34. ### Science

1. How did planetesmals form planets? A. They broke apart into smaller chunks. B. They collided and stuck together.<<(I think it's this answer) C. They cooled and pulled ice together. D. They began to rotate. 2. What distance was used to define the astronomical unit (AU...
35. ### 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 reason the North won...
36. ### Physics

Due to friction with the air, an airplane has acquired a net charge of 1.70 10-5 C. The plane moves with a speed of 3.15 102 m/s at an angle with respect to the earth's magnetic field, the magnitude of which is 5.00 10-5 T. The magnetic force on the airplane has a magnitude of...
37. ### Static Electricity. 11th Grade Pre-AP Physics

Hi everyone! I need some help studying for a test on Static Electricity. I have a few review questions that I don't know how to do. Below they are numbered and in parenthesis I answered what I think you might have to do to get the answer. Please help me in any way you can. ...
38. ### 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 runs through Mexico, ...
39. ### PHYSICS- SCIENCE

1. It is believed that in the Archeaneon (2.5-4 billion years ago) the sun’s radiative output was 30% less than it is today. (i) What would the temperature of the sun have been at that time? (ii) At what wavelength would the peak emission from the sun have been? (iii) ...
40. ### Astronomy

A cinder block can be weightless in space. Would you want to kick it with your bare foot? Even If it is weightless, does it have mass? An astronaut, circling the earth in the Space Shuttle, senses that his apparent weight is zero. He cannot feel the normal earthbound sensation...
41. ### Philosophy

Can someone please check my answers if it is right. Thank you! True/False 1. Rosenstand argues that moral subjectivism is an intuitively sound, "live and let live" kind of moral position that is both appealing and socially cohesive. -FALSE 2. For the members of the Flat Earth ...
42. ### physics / astronomy

A simple temperature model for the solar nebula disk is ￼Tdisk(a) = 20 × SQRT 100 AU/ a K, (1) where a should be expressed in AU in this equation. ￼(a) Find the temperature in the solar nebula disk at the orbit of Mer- cury, Earth and Jupiter. (b) Where is the ...
43. ### Astronomy

A simple temperature model for the solar nebula disk is ￼Tdisk(a) = 20 � SQRT 100 AU/ a K, (1) where a should be expressed in AU in this equation. ￼(a) Find the temperature in the solar nebula disk at the orbit of Mer- cury, Earth and Jupiter. (b) Where is...
44. ### 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
45. ### Geology

Isochron Diagrams Page 14 of 17 On the control part of the graph select the Rb/Sr option. Rember that the Half-life of Rb-87 is 48.8 Billion Years. Note that the scale on the horizontal axis is now 10 times greater than the vertical axis. Move the slider and watch the slope of...
46. ### spanish

does anyone know the story called " What ought a man to do on earth" It is from penn foster. Can I find it on the Internet if so where
47. ### Earth Science

Why is a minimum of three seismic stations needed to find the epicenter of an earthquake?
48. ### physics

a polar satellite is launched at 850 km above Earth .find its orbital speed.
49. ### Earth science

What two thing must scientists measure to find absoluite age of rock?
50. ### physics

A person can jump to a height of 1.5m on surface of earth. Find the velocity with which he jumps.
51. ### Physics

A polar satellite is launched at 850 km above earth.find its orbital speed
52. ### Earth Science

Why is a minimum of three seismic stations needed to find the epicenter of an earthquake?
53. ### la

la - Connexus CHEAT! - Ms. Sue, Wednesday, November 9, 2016 at 1:59pm You just grievously insulted me! Why on earth do you think I would give you the answers?? Teachers, note: This "student" posted from South Bend. guys how and why would she look where i live i need privacy ms...
54. ### Physics

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

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

a. What current is flowing in a 2.0m length of wire in the Earth's field of 55μT if it experiences a force of 10mN? b. A 2 wire cable is suppling 100 A to a DC motor. Each wire has a 2 mm insulation layer and there is also a 2 mm separate insulation layer between the 2 ...
57. ### physics(universal law of gravitation)

a satellite has a mass of 100 kg and is located at 2 x 10^6 m above the surface if the Earth. wHAT is the potential energy associated with the satellite at this location? What is the magnitude of the gravitational force on the satellite?
58. ### phyics/moon

The acceleration due to gravity on the Moon's surface is one-sixth that on Earth. What net force would be required to accelerate a 20-kg object at 6.5 m/s2 horizontally on the moon? A) 1.3 N B) 20 N C) 33 N D) 120 N E) 130 N
59. ### 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?
60. ### 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?
61. ### 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?
62. ### Science

Two tugboat A and B tow alarge boat in an easterly direction the cable which are connected to A and B respectectively make angles of 45 degrees north of east and 30 degrees south of east to the direction of motion (question it the tension fa is equal to 10000N calculate the ...
63. ### physics

A student of weight 990 N was sent to another planet called Nerdland. If Nerdland has a mass that is three times the mass of the earth and a radius that is half the radius of the earth, what would be the mass in kg of the student when on Nerdland?
64. ### phsics

A student of weight 830 N was sent to another planet called Nerdland. If Nerdland has a mass that is three times the mass of the earth and a radius that is half the radius of the earth, what would be the mass in kg of the student when on Nerdland?
65. ### PHYSICS

A student of weight 830 N was sent to another planet called Nerdland. If Nerdland has a mass that is three times the mass of the earth and a radius that is half the radius of the earth, what would be the mass in kg of the student when on Nerdland?
66. ### physics

A student of weight 600 N was sent to another planet called Nerdland. If Nerdland has a mass that is three times the mass of the earth and a radius that is half the radius of the earth, what would be the mass in kg of the student when on Nerdland?
67. ### Science

Can someone help me/check with this work? 1. _______ is the rate of change of position. A.Speed***** B.Velocity C.Acceleration D.Deceleration 2. Which of the following is the difference between speed and velocity? A. direction***** B.units C.speed D.none of the above 3.A ...
68. ### Earth Space

Do the phases of the moon affect how much of the moon is illuminated? I said yes because that's what causes us to have the different shapes/phases of the moon. Whichever parts are lit up. Is the following sentence true or false? The cycle of the phases takes about two days ...
69. ### physics

if a car moves 12km North, 19km East, and 12km South, a) Find the total distance covered. b) Find the car's displacement.
70. ### 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 the whole story!
71. ### Physics

A large pendulum with a 200-lb gold-plated bob 12 inches in diameter is on display in the lobby of the United Nations building. Assume that the pendulum has a length of 78.4 ft. It is used to show the rotation of the Earth - for this reason it is referred to as a Foucault ...
72. ### geology

1. What fraction of the Earth is made up of each of the major compositional layers: core, mantle, and crust? 2. What cities lie the same distance from our town as the boundaries of the following layers in the Earth lie from the solid surface? a. Base of oceanic crust or top of...
73. ### physics

1. what happens to the force required for an object to maintain circular motion if the period is halved (goes twice as fast around the circle)? a) force doubles b) force quadruples c) force is halved d) force is quartered 2. In a pulley problem involving an inclined plane: a) ...
74. ### Physics

A positive charge of 3.0e-6 C is pulled on by two negative charges. One, -1.9e-6 C, is 0.045 m to the north and the other, -3.7e-6 C, is 0.030 m to the south. What total force is exerted on the positive charge? F=kqq/d^2 You would have to find the F exerted by each. The first ...
75. ### 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 belong to in the ...
76. ### help help help

The asteroid belt between Mars and Jupiter consists of many fragments (which some space scientists think came from a planet that once orbited the Sun but was destroyed). (a) If the center of mass of the asteroid belt is about 2 times farther from the Sun than the Earth is, how...
77. ### physics

A satellite with a mass of ms = 7.00 × 103 kg is in a planet's equatorial plane in a circular "synchronous" orbit. This means that an observer at the equator will see the satellite being stationary overhead (see figure below). The planet has mass mp = 8.59 × 1025 kg and a ...
78. ### Physics

The force exerted by the wind on the sails of a sailboat is 310 N north. The water exerts a force of 240 N east. If the boat (including its crew) has a mass of 330 kg, what are the magnitude and direction of its acceleration? magnitude in m/s2 direction in ° north of east
79. ### Physics!!!!

Assume that a scale is in an elevator on the earth. What force would the scale exert on a 53 kg person standing on it when the elevator slows at 1.77 m/s2 while moving upward?
80. ### 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 km/h to the east? A bus...
81. ### 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. ------------ Are the ...
82. ### physics

Two people push on a 4 kg object. One force is 60N, north. The second force is 40N, east. Find the acceleration of the object. Ignore friction. The answer is 18m/s/s at 53.31 degrees.......but i don't know how to get to it.
83. ### Algebra II

Forces of 675 lb and 828 ob act on a body. The smaller force acts due north; the larger force acts N 52.3 degrees E. Find the direction and the magnitude of the resultant.
84. ### Physics

A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. (a) How high above Earth's surface is the satellite? [Answer in Km] (b) What is the satellite's acceleration? [Answer in m/s^2] I see this posted over and over again and I have about 4 ...
85. ### Earth science

What prevents life from developing on land before Earth’s atmosphere contained a significant portion of oxygen? (1) All land locations were too hot for life to exist. (2) All terrestrial environments were too cold for life to even exist. (3) All forms of life require ...
86. ### Physics

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

write an account that considers what conditions would be required on an earth-like extrasolar planet for the carbon based life to evolve. In your answer you must keep in mind what is thought to have happened on earth, and you must: according to this i have to write about how ...
88. ### physics homework

two tugboats pulled a disabled supertanker. each tug exerts a constant force of 1.80 x 10 degree N, one 14 degree west of north and the other 14 degree east of north, as they pull the tanker 0.75 km toward the north. what is the total work they do on the supertanker?
89. ### Physics

Five Boys are pushing a snowball, and each is pushing with a force of 10.0N. However, each boy is pushing in a different direction. They are pushing north, northeast, east, southeast, and south. (Each boy is pushing at an angle of 45.0 degrees relative to his neighbor.) What ...
90. ### physics

The magnetic field of the Earth is 0.50 x 10-4 T in a certain location. a) What will be in Newtons the force on a completely ionized carbon atom (Z = 6, A = 12) traveling with the solar wind with a velocity of 18.00 x 103 m/s perpendicular to the magnetic field? b) How fast ...
91. ### physics

The magnetic field of the Earth is 0.60 x 10-4 T in a certain location. a) What will be in Newtons the force on a completely ionized carbon atom (Z = 6, A = 12) traveling with the solar wind with a velocity of 10.50 x 103 m/s perpendicular to the magnetic field? b) How fast ...
92. ### Science

What would happen to an object if the force of gravity on earth was decreased by half A. It’s mass would decrease B. It’s weight would decrease**** C. It’s density would decrease D. It’s volume would decrease
93. ### Physic II

How far apart should two protons be if the electrical force of repulsion is equal to the weight (attraction to the Earth) of one of the protons? Fiqure is triangle with equal sides 2.5 m and base is 0.5 m
94. ### physics

Calculate the force of gravity between a newborn baby (mass = 2.6 kg) and the planet Mars (mass = 6.4 * 10^23 kg) when Mars is at its closest to Earth (distance = 5.6* 10^10m).

draw a diagram showing the motion of a satellite around Earth. Draw the force vectors acting on the sattelite. Is the sattelite accelerating?
96. ### Chemistry 2

What is the predominant intermolecular force responsible for the dissolution of the hydrophilic end of soap in water? Using dashed lines, illustrate where the intermolecular force occurs between atoms in adjacent molecules? Lone pair electrons have been omitted in the ...
97. ### 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 Rose Lemniscate Circle...
98. ### 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 plains sloping down from ...
99. ### english

The lines "Some for the Glories of This World; and some/Sigh for the Prophet's Paradise ot come" in rubá'i #13 mean a. some people believe that heaven is to be found on earth b. somepeople seek God in this world while others believe God is in heaven c. some people seek ...
100. ### 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 dissolved oxygen down ...