# A 40m deep well with radius 3.5m is dug and the earth taken out is evenly spread to form a plat form of dimension 28m by 22m. Find the height of the platform

19,804 questions

A 40m deep well with radius 3.5m is dug & the earth taken out is evenly spead to from a platform of dimension 28m by 22m.find the heght of the platfoem?

asked by fira on May 22, 2016
2. ## 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
3. ## 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
4. ## 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 Heiht Of The Platform.

asked by Shewit on April 23, 2019
5. ## 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
6. ## 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
7. ## math

A 40m deep well with radius 3.5m is dug and the earth taken out is evenly spread to form a plat form of dimension 28m by 22m. Find the height of the platform.

asked by Abenezer on May 8, 2014
8. ## maths

a 40m deep well with radius 3.5m is dug and the earth taken out is evenly spred to form aplat form of dimenshins 28m by 22m find the heght of theplat form?

asked by muhammed on April 14, 2019
9. ## math

The well is dug 14m deep. Its radius is 2m. The earth dug out is evenly spread out on a rectangular field of dimensions 10m*4m. Find the height of the platform raised.

10. ## math

A40m deep well with radius 3.5m is dug and the earth taken out is evenly spread to form aplateform of dimension 28m by 22m.find the height of the platform.

asked by tarekegn on May 13, 2015
11. ## maths

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

asked by jovani on April 22, 2019
12. ## math

a 40m deep well with radius 3.5m is dug and tje earth taken out is evenely spread to form a platform of dimenssion 28m by 22m .find the height of the platform

asked by kitaba on April 24, 2019
13. ## Math

A40m deep wellwith radius 3.5m is dug and the earth taken out is evenly spread to form a plat form ofdimensions 28mby 22m. find the height of the platform.

asked by Hiwot on May 7, 2016
14. ## math

a pit is dug in the shape of a cuboid with dimensions 10m*8m*3m. the earth taken out is spread evenly on a rectangular plot of land with dimensions 40m*30m. what is the increase in the level of the plot.

asked by Rihanna on January 17, 2014
15. ## math

a well of diameter 3 m is dug 14 m deep . the earth taken out of it has beem spread evenly all around of it in the shape of circular ring of width 4 m to form embankment. find the height of embankment .

asked by Avi on March 16, 2016
16. ## math

an agriculture field is rectangular, with dimensions 100m by 42m.a 20 m deep well of diameter 14 m is dug in a corner of the field and the earth taken out is spread evenly over the remaining part of the field.find the increase in the level of the field

asked by abel on May 17, 2016
17. ## math

Q2. An agriculture field is rectangular,with dimensions 100m by 42m.A 20m deep well of diameter 14m is dug in acorner of the field and the earth taken out is spread evenly over the remaining part of the field. Find the increase in the level of the field.

asked by tarekegn on May 13, 2015
18. ## Math

an agriculture field is rectangular with dimensions 100m by 42m. A 20m deep well of diameter 14m is dug in corner of field and the earth taken out is spread evenly over the remaining part of the field .find the increase in the level of the the field.

asked by Ephrem Tsegaye on May 6, 2019
19. ## maths

A well of diameter 7cm is dug 22.5m deep.The earth taken out it is spread evently all around it to a width of 10.5 to from an embankment .find the height of the embankment.

asked by simranpreet on December 3, 2012
20. ## Physics

Determine the velocity of the Hubble deep space telescope while it is in orbit at a height of 598 km (5.98 x 105 m) above the earth’s surface. The earth’s radius is approximately 6.4 x 106 m. The mass of the earth is 6.0 x 1024 kg.

asked by Smit on November 15, 2015
21. ## astronomy

"super earths" are known to have similar densities and compositions to earth but they have a mass 2-10x greater than earth. If one of these super earth's had a mass 5x the mass of earth what would be the super earth's radius ? a) 1.7x earth's radius b)

asked by sally on October 26, 2018
22. ## math

A trench 4 meter long ,2 meter wide and 3 meter high was dug into the ground.find the volume of the earth dug out for making this trench.

asked by Mumtaz alam on January 24, 2016
23. ## English

1. He dug at the river bottom. 2. He dug the river bottom. (Which one is correct?) 3. Hippo dived into the river, but he hit the water too hard. (What other expressions can we use instead of 'hard'?) 4. Hippo dug and dug. 5. Hippo kept digging. 6. Hippo

asked by rfvv on July 3, 2013
24. ## physics

Find the speed of a satellite in a circular orbit around the earth with a radius 2.69 times the mean radius of the earth; Radius Earth= 6.37E+3km; Mass Earth= 5.98E+24kg.

asked by Marie on March 11, 2014
25. ## math

a swimming pool is 40m long and 12m wide with a shallow end and a deep end.The shallow end is 1.3m deep and 10m wide while the deep end is 3m deep and 10m wide. The center tappers gently from the shallow end to the deep end. The pool is filled by four

asked by Anonymous on August 22, 2017
26. ## physics

radius R of the orbit of a geosynchronous satellite that circles the earth. (Note that R is measured from the center of the earth, not the surface.) You may use the following constants: The universal gravitational constant G is 6.67×10−11N⋅m2/kg2. The

asked by cara on December 14, 2014

Calculate the position of the center of mass of the following pairs of objects. Use acoordinate system where the origin is at the center of the more massive object. Give youranswer not in meters but as a fraction of the radius as requested. Get data from

asked by john on February 28, 2012
28. ## physics

can you walk me through this problem At what distance from the Earth will a spacecraft on the way to the Moon esperience zero net force due to these two bodies because the EArth and Mon pull with equal and opposite forces? mass of earth = m1 = 5.98 E 24 kg

asked by Physics on September 13, 2009
29. ## astronomy

On Earth, an astronaut weighs about 600 Newtons. The mass of the Earth is about 6 x 1024 kg, and the radius of the Earth is about 6.4 x 106 m. Suppose the astronaut climbs a ladder to a height of one Earth radius above the Earth. What is the new weight of

asked by bob on March 21, 2016
30. ## Physics

Calculate the position of the center of mass of the following pairs of objects. Use acoordinate system where the origin is at the center of the more massive object. Give youranswer not in meters but as a fraction of the radius as requested. Get data from

asked by john on February 28, 2012
31. ## social studies

what were the lines of defence dug into the earth? and what was willsons plan for peace?

asked by selena on January 27, 2010
32. ## Phyiscs

A satellite circles the earth in an orbit whose radius is 2.07 times the earth's radius. The earth's mass is 5.98 x 1024 kg, and its radius is 6.38 x 106 m. What is the period of the satellite?

asked by Justin S. on June 30, 2013
33. ## physics

A satellite circles the earth in an orbit whose radius is 2.01 times the earth's radius. The earth's mass is 5.98 x 1024 kg, and its radius is 6.38 x 106 m. What is the period of the satellite?

asked by sammy on October 8, 2012
34. ## physics

Assume the Earth is a sphere with its mass evenly distributed throughout. Find the moment of inertia of the Earth about its axis of rotation.

asked by Anonymous on April 17, 2012
35. ## physics

An early major objection to the idea that Earth is spinning on its axis was that Earth would turn so fast at the equator that people would be thrown into space. Given : radius earth = 6.37 × 10^6 m , mass earth = 5.98 × 10^24 kg , radius moon = 1.74 ×

asked by Anonymous on December 15, 2011
36. ## University Physics (Cal-Based)

Calculate the velocity of a 20kg object that is dropped from a height h above the Earth, where h is very large compared to the radius of the Earth. The radius of the Earth is 6380 m and the mass is 5.94 x 10^24 kg.

asked by Naaz on December 11, 2008
37. ## astronomy

Using the densities below, find what percentage of the Earth's mass is contained in its core. If Earth's core were adjusted in radius so that the core contained forty percent of the mass, by what factor would the radius of the Earth change compared with

asked by roach on November 22, 2011
38. ## surface area and volume

how many soils needs to be dug out in order to dig a well of depth 7 m and radius 2m?

asked by sirisha on March 18, 2016
39. ## physics

What is the ratio of the spin angular momentum of the earth and its orbital angular momentum about the sun. The mean radius of the earth is R=6400km. The radius of the earth's orbit is r=1.5*10^8km. You may assume the mass of the earth is uniformly

asked by alice on January 6, 2014

What is the ratio of the spin angular momentum of the Earth and its orbital angular momentum about the Sun. The mean radius of the earth is R_earth = 6400 km. The radius of the Earth's orbit is r_s = 1.5 * 10^8 km. For simplicity you may assume that the

asked by koka on November 11, 2013
41. ## physical science

At the bottom of a well one quarter of radius of the earth deep your weight compare to your normal weight would be

asked by tam on March 1, 2011
42. ## Physics

At the heighest point on earth, the distance to the center of the earth is approximately equal to 1.0014 times the radius of the earth. What would be in N/kg the magnitude of the gravitational field (g) due to the earth at that position? Assume 9.8 N/kg

asked by Hannah on September 6, 2011
43. ## math..word problem

A landscaper dug holes. It takes him 1 hour to dig a hole 2 feet deep, 2 feet long and 2 feet wide. Assuming everything remains the same, how many hours would it take him to dig a hole 4 feet deep, 4 feet long and 4 feet wide?

asked by M.A. on August 21, 2009
44. ## physics

As you walked on the moon, the earth’s gravity would still pull on you weakly and you would still have an earth weight. How large would that earth weight be, compared to your earth weight on the earth’s surface? (Note: The earth’s radius is 6378 km

asked by olga on March 31, 2011
45. ## Pre-Calc

The Greek mathematician Eratosthenes (ca. 276-195 B.C.) measured the circumference of the earth from the following observations. He noticed that on a certain day the sun shone directly down a deep well in Syene (modern Aswan). At the same time in

asked by Jessica on March 16, 2012
46. ## phy 231

It takes 23 hours 56 minutes and 4 seconds for the earth to make one revolution (mean sidereal day). a.What is the angular speed of the earth? I got 7.292x10^-5 rad/s b.Assume the earth is spherical. Relative to someone on the rotation axis, what is the

asked by Andrea on February 20, 2016
47. ## maths

A TRENCH OF 2.5 MTS AND DEPTH OF 2 MTS IS DUG OUTSIDE AN RECTANGLE FEILD OF LENGTH OF 250 MTS AND BREADTH OF 200 MTS. THE MUD FROM THE TRENCH WAS EVENLY DISTRIBUTED IN THE RECTANGULAR FIELD. FIND THE INCREASE IN THE HEIGHT OF THE FIELD.

asked by Anonymous on April 15, 2012
48. ## math

A river 3 m deep and 40m wide is flown at the speed 2km/hour how much water will flow in sea in 1 minute

asked by nabeel on December 5, 2011
49. ## physics

NASA launches a satellite into orbit at a height above the surface of the Earth equal to the Earth's mean radius. The mass of the satellite is 550 kg. (Assume the Earth's mass is 5.97 1024 kg and its radius is 6.38 106 m.) (a) How long does it take the

asked by Kristen on September 27, 2015
50. ## Physics

The space shuttle is in a 3e+5 m high orbit over the earth. The radius of the earth is 6.37e+6 m, the mass of the earth is 5.98e+24 kg. What is the distance from the center of the earth to the space shuttle? I don't know whether I would double the radius

asked by Carly on January 31, 2015
51. ## Physics

A geostationary satellite orbits the Earth in such a manner that it is always directly above the same point on the equator as the Earth rotates. Assuming that this orbit is circular, what is its radius? (The mass of the Earth is approximately 5.97 × 1024

asked by Joe on April 15, 2016
52. ## Physics

Find the gravitational force acting on the Sun by the Earth. Given: Mass of the Sun = 1.99 * 1030 kg Mass of the Earth = 5.98 * 1024 kg Radius of the Sun = 6.96 * 108 m Radius of the Earth = 6.37 * 106 m Distance between the Sun and the Earth = 1.50 * 1011

asked by Emily on July 23, 2015
53. ## Physics

What is the Earth's gravitational force on you when you are standing on the Earth and when you are riding in the Space Shuttle 380 km above the Earth's surface? Answer as a fraction of the surface gravity of Earth. (The Earth's radius is 6400 km.)

asked by Kayla on January 27, 2015

If a hole was dug 5 feet deep and 5 feet in diameter, what would be the volume of dirt removed from the hole?

asked by Anonymous on September 12, 2011
55. ## Physics

What is the orbital velocity of the Earth around the Sun, assuming the Earth takes a perfectly circular orbit around the Sun? What would be the centripetal acceleration of the Earth around the Sun? (I have no clue :() From my textbook I found out that

asked by Deyves on December 31, 2014
56. ## physics

(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), where Re is the

asked by Anonymous on January 8, 2016
57. ## physics

(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), where Re is the

asked by collins on January 8, 2016
58. ## Physics

a. 2 objects each of mass 200 kg and 500 kg are separated by 50 cm. Where body of mass 20 kg should be placed so that the resultant force of gravity experienced by objects equal to zero? b. launched a rocket leaving Earth. Known radius of the earth 6.4 x

asked by steffy Jane on May 6, 2013
59. ## geometry

A rectangular trench is to be dug which is to be 240 ft long, 90 ft wide and 9 ft deep. A large dump truck can carry 20 cubic yards in a load. How many truck loads will be required to remove the dirt from this trench?

asked by kimama on November 8, 2009
60. ## physics

A planet has a radius of about 0.85 times Earth's radius and a mass of only 0.74 times Earth's mass. Estimate the acceleration due to gravity on the planet. Use M_{Earth} = 5.972 x 10^{24} kilograms and r_{Earth} = 6370 kilometers a_{planet} =

asked by Melissa on March 3, 2014
61. ## Math

Pupils in a school prepared a circular flower garden of diameter 28 meters. They dug holes each 4 meters apart along the circumference for planting flowers. How many holes were dug?

asked by K on February 2, 2018
62. ## math

A low land, 48m long and 31.5 m broad is raised to 6.5 dm. For this, earth is removed from a cuboidal hole, 27 m long and 18.2 m broad, dug by the side of the land. The depth of the hole will be? A man rows 12 km in 5 hrs against the stream, the speed of

63. ## Physics

The average distance separating Earth and the Moon (center to center) is 384 000 km. Use the data in Table 7.3 to find the net gravitational force exerted by Earth and the Moon on a 3.00 multiplied by 104 kg spaceship located halfway between them (Earth

asked by Anonymous on November 24, 2010
64. ## geometry

Satellite Explorer VII, with a = 4465 and b = 4462, and with the center of the Earth being at one of the foci of the ellipse. Assuming the Earth has a radius of about 3960 miles,graph both the orbits of Explorer VII and earths surface on the same axis if

asked by Jenn on December 10, 2014
65. ## math

The mean radius of the Earth is 6.37 x 106 meters (m). Assuming the earth can be modeled as a perfect sphere a. In cubic meters (m3 ) what is the volume of the Earth? b. In meters (m) what is Earth’s circumference? c. If the mean density is 5.515g/cm3,

asked by Rocio Aguilera on February 21, 2011
66. ## PHYSÝCS

Find the speed of a satellite in a circular orbit around the Earth with a radius 3.65 times the mean radius of the Earth; RE= 6.37·103 km ME= 5.98·1024 kg

asked by Jimmy on October 17, 2011
67. ## Physics

The radius of the earth's orbit around the sun (assumed to be circular) is 1.50 X 108 km, and the earth travels around this orbit in 365 days. (a) What is the magnitude of the orbital velocity of the earth, in m/s? (b) What is the radial acceleration of

asked by Edge on December 28, 2015
68. ## Math

a swimming pool is 40m long 25m wide 6m deep find a cost of cementing of its floor and walls at the rates of ₹135 square per meter

asked by Rahul on February 1, 2017
69. ## Physics

You are flying to the Moon. Find the point at which the gravitational attractions of Earth and Moon on you will be equal and opposite. Given: radius of the moon: 1.74*10^6 m radius of the earth: 6.38*10^6 m orbital radius of the moon: 3.8*10^8 m Not enough

asked by Katie on June 14, 2007
70. ## Physics

Suppose that the ratio of the Moon's mass to the Earth's mass is given by 1.200E-2 and that the ratio of the Moon's radius to the Earth's radius is given by 2.700E-1. Calculate the ratio of an astronaut's Moon-weight to Earth-weight. Now it seems like this

asked by Lindsay on December 16, 2007
71. ## physics

An asteroid, whose mass is 2.0 10-4 times the mass of Earth, revolves in a circular orbit around the Sun at a distance that is 2.9 times Earth's distance from the Sun. (a) Calculate the period of revolution of the asteroid in years. (b) What is the ratio

asked by gobind on April 8, 2007
72. ## Physics

Consider a point charge with q= 1.5*10^-8 C. (a) what is the radius of an equpotential surface having a potential of 30 V?(b)Are surfaces whose potential differ by a constant amount (1,0 V) evenly spaced in radius?

asked by Jc on February 22, 2012
73. ## science

Consider a point charge with q = 1.510-8 C. (a) What is the radius of an equipotential surface having a potential of 30 V? (b) Are surfaces whose potential differ by a constant amount (1.0 V) evenly spaced in radius

asked by Swaran on February 22, 2017
74. ## Algebra

The gravitational force between an object & the Earth is inversely proportional to the square of the distance from the object to the center of the Earth. If an astronaut weighs 210 lbs on the surface of the Earth, what will he weigh 100 miles above the

asked by Crystal on April 29, 2011
75. ## ap physics

Suppose that Superman wants to stop Earth so it does not rotate. He exerts a force on Earth F⃗ SonE at Earth's equator tangent to its surface for a time interval of 1 year. The mass of Earth is 5.98×1024kg, the radius is 6.37×106m. Assume that Earth is

asked by clara on March 7, 2017
76. ## mit

A spacecraft of mass m is first brought into an orbit around the earth. The earth (together with the spacecraft) orbits the sun in a near circular orbit with radius R (R is the mean distance between the earth and the sun; it is about 150 million km). (a)

asked by jp on November 20, 2013
77. ## AP Biology

How many joules of sunlight hit Earth per day? I have looked everywhere and can't find an answer!! The sun emits about 4*10^26 Watt. The flux of solar energy at the Earth is thus about: F = 4*10^26 Watt/(4 pi R^2) where R = 149.6*10^9 meters is the

asked by Summer on August 9, 2007
78. ## physical science

Diamonds are made 1. at the surface of earth 2. magma moving at supersonic speeds deep inside the earth 3. in river beads 4. in limestone caverns

asked by Clarissa on September 17, 2009
79. ## astronomy

1. The radius of the Sun is 7 X 10^5 kilometers. Use powers of ten to show that the Sun's radius is about 100 times the Earth's radius. 2. Given that an astronomical unit is 1.5 X 10^8 kilometers and a light-year is about 10^13 kilometers, how many AU are

asked by John on April 3, 2007
80. ## maths

A satellite travels around the earth in a circulsr orbit 700 kilometres above the earth's surface. Find the radius of the satellite's orbit if the radius of the earth is 6400 kilometres. Also find the distance traveled by the satellite in one orbit of da

asked by Bendang on March 8, 2016
81. ## Physics

A projectile is fired vertically from Earth's surface with an initial speed v0. Neglecting air drag, how far above the surface of Earth will it go? (Use any variable or symbol stated above along with the following as necessary: ME for the mass of the

asked by Rachel on April 11, 2013
82. ## Physics

Calculate the position of the center of mass of the following pairs of objects. Use a coordinate system where the origin is at the center of the more massive object. Give your answer not in meters but as a fraction of the radius as requested. Get data from

asked by Lindsay on December 15, 2011
83. ## math

1.) A 2.5 x 2.5 x 2.5 meter hole was dug for the building's foundation. How many cubic meters of soil were dug? 2.) A cubical container is filled with 15,625 cm3 of sand. How long is each edge of the container? 3.) Kendy has 2 cardboard boxes. One has a

asked by stefi on February 22, 2016
84. ## physics

The moon is receding from the Earth by approximately 3.8 cm per year. Earth's mass is 5.98 x 10^24 kg, and its radius is 6.38 x 10^6 m. The Moon's mass is 7.3 x 10^22 kg, its radius is 1.79 x 10^6 m, and its orbital period around Earth is 27.3 days. The

asked by Michelle on December 16, 2008
85. ## Geometry

A landowner digs a 15 meter deep well with a diameter of 2.8 meters. The landowner spreads the dirt dug out of the holds to form a flat platform 31.5 meters by 6 meters. What is the length of the platform?

asked by Dee on May 1, 2013
86. ## geometry

The Hubble Space Telescope is orbiting Earth 600 km above Earth's surface. Earth's radius is about 6370 km. Use the Pythagorean Theorem to find he distance a from the telescope to Earth's horizon. Round your answer to the nearest ten kilometers.

asked by sarah on December 9, 2008
87. ## science

Find the gravitational acceleration if a spaceship at a distance equal to double of earth's radius from the centre of the earth (g on earth is 9.8 m/s^2)

asked by pruthviraj on September 28, 2016
88. ## Science

Find the gravitational acceleration if a spaceship at a distance equal to double of earth's radius from the centre of the earth (g on earth is 9.8 m/s)

asked by Gautam pandey on September 18, 2015
89. ## physics

Find the gravitational acceleration if a spaceship at a distance equal to double of earth's radius from the center of the earth (g on earth is 9.8 m/s^2)

asked by pruthviraj on September 28, 2016
90. ## Science

What is the circular velocity of an Earth satellite 1000. km above Earth's surface? (Note: Earth's average radius is 6371 km.)

asked by Mia on June 13, 2013
91. ## Physics HELP!!

What is the acceleration due to gravity at 7220km above the Earth's surface? Take the radius of the Earth to be 6.37e6m and the mass of the Earth to be 5.972e24kg.

asked by LS on October 16, 2012
92. ## physics

Calculate the radius of a “super- Earth” with 10 times the mass of Earth, using Earth data as a starting point.

asked by dale on November 24, 2014
93. ## physics

The value of g at Earth’s surface is about 9.8 m/s^2. If Earth were of uniform density (same mass/volume throughout), what would the value of g be inside Earth at half its radius?

asked by jim on March 6, 2012
94. ## science

How far away from the earth does acceleration due to gravity become 1% of its value at the earth's surface. Assume that the earth is a sphere of radius 638000000cm.

asked by Derrick on September 30, 2011
95. ## physics-mechanics

A 1.0 kg mass weighs 9.8 N on Earth's surface, and the radius of Earth is roughly 6.4 x 10^6 m. Calculate the average density of Earth

asked by Rebecca on December 27, 2012
96. ## Physics

Escape velocity from the surface of earth depends upon mass of the earth and radius of the earth. Find the realtion between these quantities dimensionely.

asked by Akash on April 5, 2009
97. ## physics

A satellite of mass m in a circular orbit at a height of 400Km above the earth's surface. What is the Radius of the Earth (given: 6.35 * 10^6) with respect to the center C of the Earth?

asked by Lisa on April 23, 2011
98. ## Physics

The mean radius of the Earth is R=6.38x10^6m. At what distance above the Earth's surface will the acceleration of gravity be 4.905m/s^2? F_g=(Gmme)/r^2 4.905=6.67x10^-11(5.98x10^24)/r^2 The mass cancel out so that is how I got the above answer. r=9017663m

asked by Andrea on November 12, 2007
99. ## Physics

I've been stuck on this equation for a while and I don't know if i'm missing a key part to the equation.. i just need help! If the gravitational field strength at the top of Mount Everest is 9.772 N/kg, approximately how tall (in feet) is the mountain? F=

asked by Larry on January 21, 2013
100. ## math

Calculate the speed of an artificial earth satellite, assuming that it is travelling at an altitude h of 140 Km above the surface of the earth where g=9.8m/s2. The radius of earth R is 6373Km.

asked by alobi on August 2, 2010