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.
225,384 results, page 51

Physics
A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the table as follows: a 4.0 kg object at the origin of the coordinate system, a 5.0 kg object at (0, 2.0), and a 9.0 kg object at (4.0, 0). Find the resultant ... 
physics
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 ... 
physics
why is earth bulged at the equator?will any one explain me about this? 
Physics
How can one solve this equation for t? Y = 1.3 + 18.8 t  (g/2) t^2 = 0 (Assume g = 9.8 m/s^2, the value on Earth) 
science
Describe the motions that causes one day on earth 
physics
Stemming a chimney. A rock climber of mass 71 kg wants to make her way up the crack between two rocks as shown in the figure below. The coefficient of friction between her shoes and the rock surface is ìS = 0.90. What is smallest normal force that she can apply to both ... 
Math
The earth is approximately a sphere. It's diameter is about 12730km. Water covers approximately 66% of the earths surface. How many square kilometers of land covers the earths? 
Math
Hi, I don't remember how to solve this. Please help me remember. "I live 3 miles north and 1 mile west of the mall. Ellen lives 2 miles south and 5 miles east of the mall. What is the shortest distance between our houses?" Thanks in advance, Haley Think about it as a graph and... 
physics
A 1000kg barge is being towed by means of two horizontal cables. One cable is pulling with a force of 80.0 N in a direction 30.0° west of north. In what direction should the second cable pull so that the barge will accelerate northward, if the force exerted by the cable is ... 
Science
To become more stable an atom that has two electrons in its outer energy level will gain two electrons A.) True B.) False That false correct? 
Physics
A particle is moving at 0.75c relative to a lab on Earth. By what percentage is the Newtonian expression for its momentum in error, i.e., how wrong is the classical formula? (The percentage error is the difference between the erroneous and correct values, divided by the ... 
physics
A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod deformation should not ... 
physics
A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod deformation should not ... 
physics
A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod deformation should not ... 
Physics
A roller coaster cart travelling due north at 20m/s that turns left during an interval of 4.0s without changing speed. Find the average acceleration. I understand the mathematics behind it (using pythagoras's theorem to find velocity and the formula acceleration = velocity/... 
physics
Find the minimum diameter of a 51.5mlong nylon string that will stretch no more than 1.01 cm when a load of 68.9 kg is suspended from its lower end. Assume that Ynylon = 3.51·10^8 N/m2 physics  bobpursley, Saturday, October 29, 2011 at 10:32am Hookes Law: elongation= force... 
physics
If you were to separate all of the electrons and protons in 1 g (0.001 kg) of matter, you’d have about 96,000 C of positive charge and the same amount of negative charge. If you placed these charges 5 m apart, how strong would the attractive forces between them be? 
Physics (G and g)
Please, I need help with this problem. I would really appreciate it. The top of Mt. Everest is 8850 m above sea level. Assume that sea level is at the average Earth radius of 6.38×106 m. What is the magnitude of the gravitational acceleration at the top of Mt. Everest? The ... 
physics
1.A 500.0 g mass is placed on a 20.0 cm cube of gelatin. The 500.0 g mass (a 5.00 cm diameter disk) depresses the gelatin 0.243 mm. What is Young's modulus for this gelatin? ____________N/m^2 Later, a 2.00 kg mass disk (5.00 cm in diameter) is placed on the gelatin and the ... 
physics
1.A 500.0 g mass is placed on a 20.0 cm cube of gelatin. The 500.0 g mass (a 5.00 cm diameter disk) depresses the gelatin 0.243 mm. What is Young's modulus for this gelatin? ____________N/m^2 Later, a 2.00 kg mass disk (5.00 cm in diameter) is placed on the gelatin and the ... 
physics
1.A 500.0 g mass is placed on a 20.0 cm cube of gelatin. The 500.0 g mass (a 5.00 cm diameter disk) depresses the gelatin 0.243 mm. What is Young's modulus for this gelatin? ____________N/m^2 Later, a 2.00 kg mass disk (5.00 cm in diameter) is placed on the gelatin and the ... 
science
my first is VAN but not in PAN,my second is EARTH and also in HEAVEN,my third is ONE and not in two,my fourh is in BUN and also in FUN,my last is in STAR but not in RADAR,i am a planet that moves round the sun.name the planet. 
Chemistry
For atoms that contain more than one electron, the Pauli Exclusion Principle states that: (A)the most stable arrangement of electrons in subshells is the one with the greatest number of paralel (B) Diamagnetic substances are repelled by magnets (C)transition metals have ... 
5TH GRADE SCIENCE
Hey everyone I need some omework jelp as you can see.I'm not that well in Science so could you give me some tips? And i would like somr homework help for the following passge and answers. DIRECTIONS Read the paragraph and answer the questions. You can find examples of the ... 
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 separating at the end of two... 
space
Consider a situation where immediately after birth, twins are separated. One continues to live on earth, while the other is whisked away in a space ship at 90% of the speed of light. After 65 years they are reunited. Will they look the same? Show proof of your answer through ... 
chemistry
The total surface area of earth is about 1.97*10^8 square miles. the surface area of land on earth is about 5.73*10^7 square miles. find the ratio of the surface area of land to the entire planet.? 
physics
At the surface of Jupiter's moon Io, the acceleration due to gravity is 1.81 . A watermelon has a weight of 43.0 at the surface of the earth. In this problem, use 9.81 for the acceleration due to gravity on earth 
Science Physics
An object weighs 12 N on earth. When it is brought to Mars, it has a weight of 4.8 N. What is the acceleration due to gravity on Mars? (Taking the acceleration due to gravity on earth is 10 m/s²) 
Physics
A 50kg satellite circles the Earth in an orbit with a period of 120 min. What minimum energy is required to change the orbit to another circular orbit with a period of 180 min? (Earth: radius = 6.4 106 m, mass = 6.0 1024 kg) 
physics
A fresh water pond that is 14.7 m deep is contained on one side by a cliff. The water has eroded a nearly horizontal "tube" through a bed of limestone, which allows the water to emerge on the other side of the cliff. If the "tube" has a diameter of 4.07 cm, and is located 6.0 ... 
american history
why did the south industrilize more slowly than the north? The south had fertile farmland that produced abundant crops. It also had slaves to work this land. 
Reading
The Kepler spacecraft was designed to investigate humanity last unexplored frontier the far reaches of space. The NASA space telescope looks deep into the Milky Way galaxy for the sign of habitable planet where a human can potentially thrive, in the thousands of planets it has... 
math problem
When a concrete structure is built, an engineer often performs a slump test on the concrete to ensure that it is of suitable strength and consistency. The engineer fills a truncated cone with a bottom diameter 200mm, top diameter 100mm and height 300mm with concrete. The ... 
math problem
When a concrete structure is built, an engineer often performs a slump test on the concrete to ensure that it is of suitable strength and consistency. The engineer fills a truncated cone with a bottom diameter 200mm, top diameter 100mm and height 300mm with concrete. The ... 
physics
Two dimensions. In the figure, three point particles are fixed in place in an xy plane. Particle A has mass mA = 4 g, particle B has mass 2.00mA, and particle C has mass 3.00mA. A fourth particle D, with mass 4.00mA, is to be placed near the other three particles. What (a) x ... 
physics
A 2kg block rests on a wall that is 3 m tall. What is the gravitational potential energy of the block? The force of gravity on Earth (g) is equal to 9.8 m/s2. 
physics
A (1.35x10^2) kg box is falling near Earth’s surface. It is accelerating at (7.3000x10^0) m/s^2 [D]. What is the force of air resistance on the box? 
physics
In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 1.1 m/s. However, this speed is inadequate to compensate for the kinetic friction between the puck and the ice. As a result, the puck travels only onehalf the distance between the ... 
Physics
In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 2.95 m/s. However, this speed is inadequate to compensate for the kinetic friction between the puck and the ice. As a result, the puck travels only onehalf the distance between the ... 
physics
In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 2.82 m/s. However, this speed is inadequate to compensate for the kinetic friction between the puck and the ice. As a result, the puck travels only onehalf the distance between the ... 
physics
In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 2.82 m/s. However, this speed is inadequate to compensate for the kinetic friction between the puck and the ice. As a result, the puck travels only onehalf the distance between the ... 
algebra
two buses leave at the same time. one travels west at 40 mph. the other goes north at 30 mph. When will they be 400 miles apart? 
Language Arts
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 
Physics
Both drawings show the same square, each of which has a side of length L=0.75 m. An observer O is stationed at one corner of each square. Two loudspeakers are locate at corners of the square, as in either drawing 1 or drawing 2. The speakers produce the same singlefrequency ... 
English Writing
Please help me... People believe in God because... And there is life on earth because... And people who believe in God think that God has put human beings on this earth because... I have to write continue of these sentences... Could you guys help me please? 
earth science
1. What observations show that the universe is expanding? 2. What can astronomers infer from the fact that other galaxies are moving away from ours? Please help! Thanks :) 
Chemistry
1) What is the atomic # for selenium? 34 2) Write the full electron configuration for selenium following the (n+l) rule? I am not sure what is meant by n+l 3) write the electron configuration, grouping electrons by their "n" values. [Ar]3d10 4s2 4p4 Are these correct? 4) What ... 
Physics
Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is thirtyfive times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites. 
physics
Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is thirtyfour times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites. Thank you! 
physics
A block of mass 2kg placed on a long frictionless horizontal table is pulled horizontally by a constant force F. It is found to move 10 m in the first two seconds find the magnitude of F 
physics
Two dogs pull on a toy. One pulls with a force of 10 N, the other with a force of 15 N. (a) In what relative directions can the dogs act to give the toy the smallest acceleration? 
Chemistry
How do I find the radium of the sulfide ion in BeS? The radius of Be is 59 pm. I am also given the force between them. 
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 93,000,000 miles from Earth. ... 
calculus
Q#1: From a point of O, two cars leave at the same time. One car travels west and after ‘t’ sec, its position is x=t2+t ft. the other car travels north and it covers y= t2+3t ft in ‘t’ sec. At what rate is the distance between the two cars changing after 5 sec? ... 
Social Studies 7R  DBQ (PLZ read!!!)
I'm almost done with my essay. I just have to choose one more document which means that I have to write another paragraph and I have to write the conclusion. Plus I want to add something for my second paragraph. the similarities between the south and the north, Sectionalism... 
Physics, Math, Aerospace, Engineering
A deorbit burn, similar (but not the same) to that presented in the previous math problem, has been performed. During this deorbit burn a precalculated ∆V (delta V, change in velocity) of 99.1 meters per second will be used to decrease the Shuttle’s altitude from ... 
physics
Multiple Concept Example 9 provides background pertinent to this problem. The magnitudes of the four displacement vectors shown in the drawing are A = 17.0 m, B = 10.0 m, C = 11.0 m, and D = 23.0 m. Determine the (a) magnitude and (b) direction for the resultant that occurs ... 
9th grade
A person standing on Mars would weigh 38% of his earth weight. What is the Mars weight of a person with an earth weight of 55 kilograms? 
math
an object that weighs 234lb on jupiter weighs 100lb on earth. what would an object that weighs 400 lb on jupiter weigh on earth? 
Earth science
The inner core of the Earth is solid because of increased___________ a.)density and composition b.)density and temperature c.)temperature and pressure d.)pressure and density 
earth science
#16 the inner core of the earth is solid because of increased__________ a> density and composition b> density and temperature c> temperature and pressure d> pressure and density 
Physics
Can someone walk me through how to work this? It's worded weirdly and I'm not sure how to solve it. Mass M1= 2.2 kg lies on a frictionless table, pulled by another mass M2= 4.1 kg under the in of Earth's gravity. a) What is in N the net force acting on the system of both ... 
mechanics
please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of the earth (r>Re), ... 
Physics
The velocity of the Moon relative to the center of the Earth can be approximated by varrowbold(t) = v [−sin (ωt) xhatbold + cos (ωt) yhatbold], where v = 945 m/s and ω = 2.46 multiplied by 10−6 radians/s. (The time required for the Moon to complete ... 
Chemistry
Are the Carbon atoms full though. I don't know. My teacher was saying something about putting the atoms with dots on a diagonal and she said something about using arrows to indicate the "CC" bonds. ??????????????????????????????????????? I don't understand what you mean by th... 
science
The mass of the girl in earth is 24kg. What is her mass and weight in moon if the moon's gravity is 1/6 of the earth' gravity? 
Physics
he weight of an astronaut on the moon is 127 N, where the value of 'g' is only 1.7 m/s2. What would the weight of this astronaut be on the Earth (in N)? I don't know if my attempt is rite? 127n/1.5ms^2 74.70N Divide 74.70N with earth value of G. What is the earths value of G? 
geology(science) am i correct
Respond to the following scenario: o Your younger brother is in 5th grade. He comes home and tells you to look at an animation his teacher showed him in geology class. o Review the Continents of the Past animation on this week¡¦s aXcess page. o After viewing the animation, ... 
Physics
A small charged sphere,A, carries 4 times the charge of another sphere B. When these are placed 4.5 cm apart, they experience a force of 0.016N attraction between them. Find the charge on B. 
physics
two charged bodies exert a force of 86N on each other. If they are moved so that they are 6 times farther apart, what is the new force that they will exert on each other? 
Physical Science
The string of a certain yoyo is 80 cm long and will break when the force on it is 10 N. What is the highest speed the 200 g yoyo can have when it is being whirled in a circle? Ignore the gravitational pull of the earth on the yoyo. 
Physical Science
The string of a certain yoyo is 80 cm long and will break when the force on it is 10 N. What is the highest speed the 200 g yoyo can have when it is being whirled in a circle? Ignore the gravitational pull of the earth on the yoyo. 
math
can someone please help me with this question. Given the funtion f(x)= 3x9 a. find the rate of change between the two stated values for x: 7 to 8 b. find the equation of a secant line containing the given points: (7,f(7)) and (8,f(8)) I think I have (a)answered, just need ... 
alg
1. (20 points) Police use the equation to estimate the speed (s) of a car, in miles per hour, based on the length (x), of its skid marks upon sudden braking on dry asphalt. a. Solve this equation for d. b. A motorist is involved in an accident. The skid marks are measured to ... 
reading
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 93,000,000 miles from Earth. ... 
Earth Science
determine the slope of an area, given the following: Start measuring at 700ft. measure a distance of 4 miles, and end at an elevation of 2432ft 
physics
In a city grid, each block on the eastwest streets is 100 meters long. Each block on the northsouth streets is 20 meters long. A walker walks 4 blocks west and then 4 blocks south. How much father did the walker travel than the actual distance between the start and end ... 
Calc/Physics
Find the following questions at the depth of 25\text{m}. The gravitational acceleration is g = 9.8\text{m/s}^2 and the density of water is \rho = 1000\text{kg/m}^3. a. Find the hydrostatic force on a square steel plate with sides 2\text{m} placed horizontally. Answer (in ... 
Physics (please help!!!!)
Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by ... 
physics
1. (a) How far below an initial straightline path will a projectile fall in eight seconds? (b) Does your answer depend on the angle of launch or on the initial speed of the projectile? the answer is no. but defend it. 2. Why is it important that a satellite be above Earth's ... 
Advance Biology
I need help writting exactly 25 words to describe the relationship between CFCs and the Earth's protective ozone layer. 
physic
In an accidental explosion, a satellite breaks in half while in circular orbit about Earth. One half is brought momentarily to rest. What is the fate of the half brought to rest? What happens to the other half? 
ITT
In an accidental explosion, a satellite breaks in half while in circular orbit about earth. one half is brought momentarily to rest. what is the fate of the half brought to rest? what happens to the other half? 
Physics
In an accidental explosion, a satellite breaks in half while in circular orbit about earth. One half is brought momentarily to rest. What is the fate of the half brought to rest? What happens to the other half? 
physics
a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. Help with ... 
Physics(Help! Help!! Help!!!)
a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. (Help with ... 
Physics(Help! Help!! Help!!!)
a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. (Help with ... 
Physics(Help! Help!! Help!!!)
a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. (Help with ... 
Physics(Help! Help!! Help!!!)
a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. (Help with ... 
Physics(Help! Help!! Help!!!)
a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. (Help with ... 
Physics
Two identical rods are placed end to end, separated by a gap of width D. Each rod has charge Q spread uniformly along its length L. Calculate the force between the rods. I need some help. My teacher doesn't give us much help. Thank you! 
Physics
Two identical rods are placed end to end, separated by a gap of width D. Each rod has charge Q spread uniformly along its length L. Calculate the force between the rods. I need some help. My teacher doesn't give us much help. Thank you! 
I need help..
1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is the basic unit of ... 
science chem
give one example of two elements that would be placed incorrecty if they were in order of their relative atomic masses. and explain why placing these two elements like this would not be correct. Pleasw could someone help me. Co/Ni is one. Ar/K is a second one. I will leave it ... 
Physics
Some object moves 220.0 m at an angle of 42° north of west. During this motion, a 68.0 N force acts on the same object, doing +5460.0 J of work on the object. Assuming the force is applied horizontal to ground, what is this force’s orientation? Is there more than one ... 
english
For my assignment I have to find an advertisement, analyze it, and write my interpretation of it. I've done this, but I'm coming out short on words for the assignment. And I feel like there's nothing else that I can mention. I'm supposed to write 500 words and I have 379. Can ... 
physics(urgent help)
a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. ((Help with ... 
Science
Two children wish to break a string. Are they more likely to succeed if each takes one end of the string and they pull against each other, or if they tie one end of the string to a tree and both pull on the free end? Why? I answered this one yesterday. You get the same tension... 
SCIENCE
Suppose an astronomer oberserves a huge solar flare. Predict its effect on Earth in the next day or so. I put it would break satellites and powercuts would happen. But would a huge solar flare kill all people on Earth? Im not sure