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July 24, 2014

Homework Help: Science: Earth

Recent Homework Questions About Earth

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Science-Ms.Sue
Suppose some natural disaster occurs and a species of finch is forced to relocate from its original island where it dined on cactus flowers to an adjacent island with many fewer cacti but an overabundance of orchids. What would be the immediate consequences to the species in ...
Sunday, November 24, 2013 at 10:17pm

Science
Study the image of the fossil shown below. How might a scientist use this fossil to learn more about the history of life on Earth? connexus dot com/content/media/917517-4162013-72829-P​M-1012149111.jpg to compare structures in the fossil with homologous structures in ...
Sunday, November 24, 2013 at 7:48pm

Science-Ms.Sue
Very few fossils of jellyfish or their close relatives have been found. This makes it hard to trace the evolutionary history of jellyfish using the fossil record. What explains this? A. Jellyfish fossils are buried deep under the ocean floor, not in land areas where scientists...
Sunday, November 24, 2013 at 4:58pm

Physics
A pulley of mass mp , radius R , and moment of inertia about its center of mass Ic , is attached to the edge of a table. An inextensible string of negligible mass is wrapped around the pulley and attached on one end to block 1 that hangs over the edge of the table. The other ...
Sunday, November 24, 2013 at 10:01am

Physics
A man has a mass of 65kg on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 13% of his body weight?
Sunday, November 24, 2013 at 2:53am

physics
A spacecraft of mass 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 ( is the mean distance between the earth and the sun; it is about 150 million km). (a) What is the speed (in m/s) ...
Friday, November 22, 2013 at 12:43pm

Science
Luis wanted to create a clay model of earth and the sun. To show how Earth rotates, Luis wants to use a toothpick to represent Earth's axis of rotation. Where should Luis place the toothpick? A. Horizontally through Earth in the direction Earth is traveling B. Vertically ...
Wednesday, November 20, 2013 at 8:27pm

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) What is the speed v0 (...
Wednesday, November 20, 2013 at 7:40am

Check my answers 6 ?s- Physics
What is a free body diagram? (Points : 1) a drawing of an object in free fall a diagram showing all the forces acting on an object but not its surroundings <-- a diagram showing the shape of an object and the forces that act on it a diagram of an object that is free to ...
Tuesday, November 19, 2013 at 12:11pm

Science (Physics)
Gravity on the surface of the moon is only 1 6 as strong as gravity on the Earth. What is the weight of a 30 kg object on the Earth? The acceleration of gravity is 10 m/s 2 . Answer in units of N What is the weight on the moon? Answer in units of N What is the mass on the ...
Monday, November 18, 2013 at 6:53pm

Physics - pendulum
A pendulum that on Earth has period 0.52 s is taken to the surface of a large asteroid, where it is measured to have period 1.7 s. What is the value of the gravitational acceleration on the surface of that asteroid?
Monday, November 18, 2013 at 2:12pm

PHYSICS
A wheel in the shape of a uniform disk of radius R and mass mp is mounted on a frictionless horizontal axis. The wheel has moment of inertia about the center of mass Icm=(1/2)mpR2 . A massless cord is wrapped around the wheel and one end of the cord is attached to an object of...
Monday, November 18, 2013 at 4:05am

Math
There are about 7 billion people on Earth. Suppose that they all lined up and held hands, each person taking about 2 yards of space. a. How long a line would the people form? b. The circumference of the Earth is about 25,000 miles at the equator. How many times would the line ...
Sunday, November 17, 2013 at 3:39pm

PHYSICS HELP
A pulley of mass mp , radius R , and moment of inertia about its center of mass Ic , is attached to the edge of a table. An inextensible string of negligible mass is wrapped around the pulley and attached on one end to block 1 that hangs over the edge of the table. The other ...
Sunday, November 17, 2013 at 1:18pm

Science (Physics)
On the moon, the acceleration due to gravity is only 1.6 m/s/s. If someone on earth can throw a baseball 24.2 m high, how high could she throw it on the moon?
Saturday, November 16, 2013 at 10:36pm

Physics
Acceleration due to gravity on the moon's surface is 1/6th that on the earth . An object weight 900N on the earth . What does it weight on the moon ?
Saturday, November 16, 2013 at 5:42am

Earth space science, check answers?
A. 75 % B. 12.5% C. 25% D. 3.13% E. 9.38% 3. what percentage of land on the earths surface is inhospital lands? - B 4. what percentage of earths surface is covered by land? - C 5. what percentage of land on earth is usable, for living on, but not for agriculture/farming?-D 6. ...
Friday, November 15, 2013 at 1:34pm

Check my answers?
A. 75 % B. 12.5% C. 25% D. 3.13% E. 9.38% 3. what percentage of land on the earths surface is inhospital lands? - B 4. what percentage of earths surface is covered by land? - C 5. what percentage of land on earth is usable, for living on, but not for agriculture/farming?-D 6. ...
Friday, November 15, 2013 at 1:11pm

Earth space science
I need help with this. the map doesnt show anything and idk how to post the map on here... Match the cities A,B,C, and D with the weather description of the surface model (To the right of each letter) a. city A b. City B c. City C d. City D A. Pressure of 1015.1 and south east...
Thursday, November 14, 2013 at 1:10pm

Physics Classical Mechanics
A satellite of mass m is orbiting the earth, mass M , in a circular orbit of radius ra . Unfortunately a piece of space debris left by a passing rocket lies directly in the satellite's path. The piece of debris has the same mass m as the satellite. The debris collides with...
Thursday, November 14, 2013 at 9:34am

Physics Classical Mechanics`
A wheel in the shape of a uniform disk of radius R and mass mp is mounted on a frictionless horizontal axis. The wheel has moment of inertia about the center of mass Icm=(1/2)mpR2 . A massless cord is wrapped around the wheel and one end of the cord is attached to an object of...
Thursday, November 14, 2013 at 9:21am

Physics Classical Mechanics
A pulley of mass mp , radius R , and moment of inertia about its center of mass Ic , is attached to the edge of a table. An inextensible string of negligible mass is wrapped around the pulley and attached on one end to block 1 that hangs over the edge of the table. The other ...
Thursday, November 14, 2013 at 7:11am

PHYSICS HELP
A satellite of mass m is orbiting the earth, mass M , in a circular orbit of radius ra . Unfortunately a piece of space debris left by a passing rocket lies directly in the satellite's path. The piece of debris has the same mass m as the satellite. The debris collides with...
Thursday, November 14, 2013 at 4:53am

PHYSICS
To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest. The belt is a 200-turn coil. When the patient inhales, the area encircled by the coil increases by 45.0 cm2. The magnitude of the Earth's magnetic field is 50.0 μT ...
Thursday, November 14, 2013 at 12:55am

physics
A 19 turn circular coil of wire has diameter 1.09 m. It is placed with its axis along the direction of the Earth's magnetic field of 51.0 µT, and then in 0.195 s it is flipped 180°. An average emf of what magnitude is generated in the coil?
Wednesday, November 13, 2013 at 10:46pm

science
Why did the following change occur ? The snow that covered the ground all winter began to melt,temperature rose, and flowers started to bloom. a) days became shorter b) earth's tilt on its axis shifted. c) the sun's rays became more concentrated d) Earth completed one ...
Wednesday, November 13, 2013 at 10:09pm

Circular motion Problem - moon completing an orbit
Given that sidereal month, the amount of time it takes the moon to complete one orbit, is 27.332 days. How far is the moon from the earth?
Wednesday, November 13, 2013 at 9:39pm

science
tides are caused by the force of inertia from the sun and moon acting on Earth. true or false
Wednesday, November 13, 2013 at 6:08pm

science
why can you never see the far side of the moon from Earth ? a) because earth is spinning too quickly b) because it cannot be seen during daylight hours c) because the moon rotates once on its axis in the same time that it takes to revolve around earth d) because the moon does ...
Wednesday, November 13, 2013 at 3:21pm

science
which of the following descriptions of the moon's surface is accurate? a) the moon's surface is wet and smooth b) the moon's surface is dry and irregular c) the moon's surface has mountains and oceans d) the moon's surface is exactly like Earth's surface
Wednesday, November 13, 2013 at 3:12pm

Physics please HELP
A meteor is approaching. Assume that the meteor started very far away from the earth and just grazes the earth. You may ignore all other forces except gravitational force between earth and meteor. Assume that mass of the meteor is much smaller than mass of the earth. With ...
Tuesday, November 12, 2013 at 6:46pm

science
What is the height (in miles) for a ( television satellite to be placed above the equator of Earth to rotate at the same speed as Earth and be able to relay pictures that have been beamed to it back to another place?
Tuesday, November 12, 2013 at 6:02pm

physical/earth science
what important nonmetal is in brilliant yellow acrylic paint that contains titanium dioxide
Tuesday, November 12, 2013 at 5:54pm

Physics
Gravity on the surface of the moon is only 1/6 as strong as gravity on the Earth. What is the weight of a 24 kg object on the Earth? The acceleration of gravity is 10m/s2 .
Tuesday, November 12, 2013 at 4:31pm

Earth and Environmental Science
How much does the amplitude of the waves increase between an earthquake that measures 4.2 on the Richter scale and an earth quake that measures 6.2 on the Richter scale?
Tuesday, November 12, 2013 at 2:09pm

Physics please HELP
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 mass of the Earth ...
Monday, November 11, 2013 at 10:38pm

science
Earth titled axis affects the strength of sunlight in different places of earth's surface. If you are in an area that receiving less direct sunlight,where are you located? a) near the equator b) near the north pole c) near the south pole d) near the north or south pole
Monday, November 11, 2013 at 11:49am

Math - Algebra
If a man wewighs 41 newtons (N) on the surface of the earth while he weighs 81.5N on the surface of the moon, approximately how much lighter is he on the moon? What would be his weight on the surface of the earth if he weighs 90 N on the surface of the moon?
Monday, November 11, 2013 at 12:43am

Math
When estimating distances from a table of velocity data, it is not necessary that the time intervals are equally spaced. After a space ship is launched, the following velocity data is obtained. Use these data to estimate the height above the Earth's surface at 120 seconds...
Sunday, November 10, 2013 at 10:40pm

physics
A spacecraft is in circular Earth orbit at 5400km altitude. By how much will its altitude decrease if it moves to a new circular orbit where its orbital speed is 20% higher?
Sunday, November 10, 2013 at 6:42pm

PHYSICS
At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.40%?
Sunday, November 10, 2013 at 6:14pm

PHYSICS
What's the total mechanical energy of a 300kg satellite in circular orbit 1400km above Earth's surface?
Sunday, November 10, 2013 at 6:13pm

science
earth and the moon are kept in their respective orbits due to the influence of ? a) inertia b) gravity c) both inertia and gravity d) neither inertia and gravity
Sunday, November 10, 2013 at 2:34pm

physics-Gravitational Attraction(please help)
1. The centers of two 11.80 kg spheres are separated by 0.09 m. What is their gravitational attraction? 2. What is the ratio of this attraction to the weight of one of the spheres (at the surface of the Earth)? Please answer both Thank you
Saturday, November 9, 2013 at 9:27pm

additional science: physics
Hello i have 2 questions in total. 1) The meteor enters the Earth’s atmosphere with an acceleration of approximately 9.7 m/s2 and with a force acting on it of 1.94 N. What is the mass of the meteor? Show your calculations. 2) Compare this value of the acceleration due to ...
Saturday, November 9, 2013 at 8:24am

physics
Gravitational Attraction 1. The centers of two 11.80 kg spheres are separated by 0.09 m. What is their gravitational attraction? 2. What is the ratio of this attraction to the weight of one of the spheres (at the surface of the Earth)? Please answer both, I'd be greatful. ...
Saturday, November 9, 2013 at 12:16am

Earth Science
need help plzz .... I did some but I would like someone to double check them too 1. How did planetesmals form planets? (1 point) A. They broke apart into smaller chunks. B. They collided and stuck together. C. They cooled and pulled ice together. D. They began to rotate. 2. ...
Friday, November 8, 2013 at 11:23am

Science!!!!
1. Which of the following gases was most likely present in Earth's earliest atmosphere? (1 point) A) nitrogen B) hydrogen* C) argon D) oxygen 2. Which of the following statements accurately describes the development of the geologic time scale? (1 point) A) Scientists ...
Friday, November 8, 2013 at 8:59am

science
earth appears to be mostly blue when viewed from space because it is mostly covered by ? a) water b) oxygen c) carbon dioxide d) ozone
Friday, November 8, 2013 at 7:58am

English!
This is what i got so far but i need help with an opening paragraph and conclusion Mark twain used huck as narrator to see the innocent view of these difficult adult themes. in the eyes of a child, the morality of the situations he finds are much more concerning than most ...
Thursday, November 7, 2013 at 11:08pm

Science - The Sun
What is the true thickness of each of the sun's layers (core, radiation zone, convection zone, photosphere, chromosphere, and corona)? What is the age, composition, average density, period of rotation, distance from Earth, and source of energy from the sun?
Thursday, November 7, 2013 at 8:33pm

Science
1. Which of the following gases was most likely present in Earth's earliest atmosphere? (1 point) A) nitrogen B) hydrogen* C) argon D) oxygen 2. Which of the following statements accurately describes the development of the geologic time scale? (1 point) A) Scientists ...
Thursday, November 7, 2013 at 2:13pm

Science
1. Which of the following gases was most likely present in Earth's earliest atmosphere? (1 point) A) nitrogen B) hydrogen* C) argon D) oxygen 2. Which of the following statements accurately describes the development of the geologic time scale? (1 point) A) Scientists ...
Thursday, November 7, 2013 at 8:47am

science help plzzz
Multiple Choice 1. Which of the following images shows a living organism interacting with a biotic factor in its environment? (1 point) bird drinking water koala eating leaves plant in the Earth whale in the ocean 2. Which of the following shows the correct order from smallest...
Thursday, November 7, 2013 at 3:28am

Math Ms. Sue please help!!!
Okay I am really stuck on this question Tip: ^ = exponent Example: 6x10^7 7 is exponent Question: Venus is the second planet from the sun. Earth is the third planet from the sun. The distance from Venus to the sun is 6.72x10^7 and the distance from Earth to the sun is 9.3x10^7...
Wednesday, November 6, 2013 at 11:15pm

General Chemistry I
At noon on a clear day, sunlight reaches the earth's surface at Madison, Wisconsin, with an average power of approximately 4.00 kJ·s–1·m–2. If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 6.60 ...
Wednesday, November 6, 2013 at 8:31pm

Earth Space
If the temperature is rising, will condensation take place? (Or does it only take place when its cool?)
Wednesday, November 6, 2013 at 3:23pm

Math/Science
Explain how you could determine, give the following 3 pieces of information, (you need all 3 together not each one individually) the radius of the Earth. 1)Jakarta and Port Moresby, the capital of pau New Guinea, are two cities on the equator. 2) A plane leaves from Port ...
Wednesday, November 6, 2013 at 1:31am

Earth Science
do you think that the earthquake that affected japan should have a impact on the nuclear issues for the united states ? DONT UNDERSTAND THIS QUESTION AT ALL !
Tuesday, November 5, 2013 at 7:40pm

science
what keeps earth from falling into the sun ? gravitational pull or inertia
Tuesday, November 5, 2013 at 6:45pm

physics
A ball is released from a hot air balloon moving downward with a velocity of -10.0 meters/second and a height of 1,000 meters. How long did it take the ball to reach the surface of Earth? Given: g = -9.8 meters/second2.
Tuesday, November 5, 2013 at 9:27am

physics
A ball is released from a hot air balloon moving downward with a velocity of -10.0 meters/second and a height of 1,000 meters. How long did it take the ball to reach the surface of Earth? Given: g = -9.8 meters/second2.
Tuesday, November 5, 2013 at 9:27am

physics
A ball is released from a hot air balloon moving downward with a velocity of -10.0 meters/second and a height of 1,000 meters. How long did it take the ball to reach the surface of Earth? Given: g = -9.8 meters/second2.
Tuesday, November 5, 2013 at 9:27am

physics
a space probe launched from earth and orbits at a distance of 15,000 m from earth's center, the gravitational force is 500 N. What is the size of force when it is 25,000 m from earth.
Tuesday, November 5, 2013 at 12:06am

Chemistry #4
How long does it take (in minutes) for light to reach Earth from the Sun, a distance of 1.589 × 108 km?
Monday, November 4, 2013 at 1:06pm

homework
Which of the following would cause the greatest decrease in gravitational force between the earth and the moon? an increase in the earth's mass an increase in the moon's mass an increase in the distance between the earth and the moon a decrease in the distance between ...
Sunday, November 3, 2013 at 6:57pm

PHYSICS
The magnetic field of the Earth at a certain location is directed vertically downward and has a magnitude of 54.0 µT. A proton is moving horizontally towards the west in this field with a speed of 6.00 ✕ 106 m/s What is the radius of the circular arc followed by ...
Saturday, November 2, 2013 at 4:51pm

SCIENCE (HELP)
how does the earth’s surface get heated by the sun’s radiation?
Saturday, November 2, 2013 at 11:58am

Earth Science PLZ HELP
Based on what you have discovered, which of the following conditions would lead to the formation of clouds? 1. Moist air moves up as it encounters a mountain range. 2. High pressure is moving into an area. 3. The air over a large parking lot is warmer in the afternoon than the...
Friday, November 1, 2013 at 8:30pm

Math
7. The ratio of an object's weight on Earth to its weight on Neptune is 5 : 7. How much would a person who weighs 150 pounds on Earth weigh on Neptune? A. 170 pounds B. 107 1/7 pounds C. 750 pounds D. 210 pounds I answered D, because I took 150 pounds and divided that by 5...
Friday, November 1, 2013 at 6:37pm

science
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
Friday, November 1, 2013 at 1:05pm

Physics problem
An object with a mass of 100kg is dropped from an 80 meter high building and leaves an impression in the ground of 15cm. A.What is the time needed to hit the ground? B. What is the speed of the object when it hits the ground? C. What is the coefficient of the friction between ...
Friday, November 1, 2013 at 1:40am

Electrical Engineering
Find the latitude at Stanford University using Google Maps to the nearest degree (This is how you do it) and calculate the Air Mass Factor on the autumnal equinox (when the center of the sun is in the same plane as the equator of the earth) at noon (when the sun is directly ...
Friday, November 1, 2013 at 1:02am

Physics problem
An object with a mass of 100kg is dropped from an 80 meter high building and leaves an impression in the ground of 15cm. A.What is the time needed to hit the ground? B. What is the speed of the object when it hits the ground? C. What is the coefficient of the friction between ...
Friday, November 1, 2013 at 1:00am

PHYSICS
The magnetic field of the Earth at a certain location is directed vertically downward and has a magnitude of 54.0 µT. A proton is moving horizontally towards the west in this field with a speed of 6.00 ✕ 106 m/s. What is the radius of the circular arc followed by ...
Friday, November 1, 2013 at 12:16am

Science
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
Thursday, October 31, 2013 at 11:17am

science
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
Wednesday, October 30, 2013 at 7:18pm

Science
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
Wednesday, October 30, 2013 at 5:30pm

Science
What process involves the comparison of rock layers with others in a sequence to determine its age? radioactive decay radiometric dating relative dating absolute dating To determine the most accurate and precise age of Earth's oldest rocks, geologists would use relative ...
Wednesday, October 30, 2013 at 4:51pm

science
during which phase is the least percentage of the light that hits the moon visible from earth? a) new moon b) waxing gibbous c) waning crescent d) full moon
Wednesday, October 30, 2013 at 12:26pm

Science
What percent of water is not easily accessible or usable on earth? *A. .6% B. 12.5% C. 50% D. 99% Subtract the answer from the last question from 100%. What does the remainder represent and what are the sources of this percentage of water? A. 97% rivers only B. 1% lakes, ...
Wednesday, October 30, 2013 at 12:19pm

science
which type of eclipse would you expect to see if the moon passes directly between earth and the sun? a) a solar eclipse b) a lunar eclipse c) a total lunar eclipse d) a penumbra
Wednesday, October 30, 2013 at 12:18pm

science
How does gravity affect the moon? a) it pulls the moon toward earth b) it pushes the moon away from earth c) t allows the moon to move in a straight line d) it keeps the moon from colliding with the sun
Wednesday, October 30, 2013 at 10:08am

science
why does the sun appear to move westward across the sky during the day? a) because earth rotates to the east b) because earth rotates to the west c) because the sun moves in a westerly direction d) because of the way you are looking into the sky
Wednesday, October 30, 2013 at 8:26am

science
which of the following statements best describes the biosphere? a) it is a mixture of gases that contain dust particles b)it contains earths metal core c) it contains all of earths water d) it it the part of earth that contains living organisms is it d ?
Wednesday, October 30, 2013 at 8:24am

science
which of the following statements best describes the biosphere? a) it is a mixture of gases that contain dust particles b)it contains earths metal core c) it contains all of earths water d) it it the part of earth that contains living organisms is it d ?
Wednesday, October 30, 2013 at 8:09am

physics
Imagine a frictionless perfectly straight tunnel which runs from Boston (USA) to Delhi (India). We release (at zero speed) an object in the tunnel in Boston. Assume that the Earth is a perfect sphere with radius 6.4*10^3 km, with a mass of 6.0*10^24 kg and that the mass ...
Wednesday, October 30, 2013 at 5:54am

Physics
If the mass of a planet is 0.571 times that of the Earth and its radius is 0.787 times that of the Earth, estimate the gravitational field g at the surface of the planet. The gravitational acceleration on Earth is 9.8 m/s2. Answer in units of m/s2
Tuesday, October 29, 2013 at 10:34pm

science
which of the following would happen to the moon if gravity no longer affected it ? a) the moon would continue to move on it's orbital path b) the moon stop moving all together c) the moon would move in a spiral toward earth d) the moon would move in a straight line
Tuesday, October 29, 2013 at 2:53pm

Physics
A satellite moves in a circular orbit around the Earth at a speed of 5.3 km/s. Determine the satellite’s altitude above the surface of the Earth. Assume the Earth is a homogeneous sphere of radius 6370 km and mass 5.98 × 1024 kg. The value of the universal ...
Tuesday, October 29, 2013 at 1:38pm

PHYSICS
The magnetic field of the Earth at a certain location is directed vertically downward and has a magnitude of 54.0 µT. A proton is moving horizontally towards the west in this field with a speed of 6.00 ✕ 106 m/s. (a) What is the direction and magnitude of the ...
Tuesday, October 29, 2013 at 1:28am

Earth Space
Why is oxygen an imporant variable gas?
Monday, October 28, 2013 at 5:59pm

Physics
On a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about 1.2 103 W/m2. What is the electromagnetic energy contained in 6.4 m3 of space just above the earth's surface?
Monday, October 28, 2013 at 2:32pm

Earth and Environmental Science
The solar wind can be thought of as evidence for which theory of light?
Monday, October 28, 2013 at 2:21pm

PHYSICS (HELP)
An instrument-carrying projectile of mass m1 accidentally explodes at the top of its trajectory. The horizontal distance between launch point and the explosion is xm. The projectile breaks into two pieces which fly apart horizontally. The larger piece, m3, has three times the ...
Monday, October 28, 2013 at 11:59am

physics(elena)
An instrument-carrying projectile of mass m1 accidentally explodes at the top of its trajectory. The horizontal distance between launch point and the explosion is xm. The projectile breaks into two pieces which fly apart horizontally. The larger piece, m3, has three times the ...
Monday, October 28, 2013 at 11:37am

Physics Classical Mechanics
The mean distance from the center of the earth to the center of the moon is rem = 3.84 × 108 m. The mass of the earth is me = 5.98 × 1024 kg and the mass of the moon is mm = 7.34 × 1022 kg. The mean radius of the earth is re = 6.37 × 106 m. The mean ...
Monday, October 28, 2013 at 6:10am

Physics Classical Mechanics
An instrument-carrying projectile of mass m1 accidentally explodes at the top of its trajectory. The horizontal distance between launch point and the explosion is xm. The projectile breaks into two pieces which fly apart horizontally. The larger piece, m3, has three times the ...
Monday, October 28, 2013 at 6:10am

Earth Science (Geography)
In what way can the soils, geology and slopes affect river flow?
Monday, October 28, 2013 at 4:49am

physics (please help)
An instrument-carrying projectile of mass m1 accidentally explodes at the top of its trajectory. The horizontal distance between launch point and the explosion is xm. The projectile breaks into two pieces which fly apart horizontally. The larger piece, m3, has three times the ...
Sunday, October 27, 2013 at 3:51pm

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