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August 30, 2014

Homework Help: Science: Earth

Recent Homework Questions About Earth

Post a New Question | Current Questions

Science help,plz:)
Okay, these are my last questions of the day.... 1. After a rock layer is eroded, which additional event must occur to create an unconformity, or a gap in the geologic record? an earthquake or motion along a fault new deposits of sediment must build up on the eroded area ...
Saturday, December 14, 2013 at 2:53pm

science
Which of the following best supports the idea that the melting of glaciers in Antarctica is a global environmental threat? A. The melting of glaciers can cause sea levels on Earth to fall. B. The melting of glaciers can change ecosystems in Antarctica. C. The melting of ...
Friday, December 13, 2013 at 4:19pm

Science-bobpursley/Ms.Sue
1. A trilobite is considered an index fossil because this organism existed during a limited period in Earth's history. That means that any fossil located in a layer of rock beneath a layer containing trilobite fossils is ____________ than a trilobite. 2. According to this ...
Thursday, December 12, 2013 at 11:02am

Astronomy help
I have already solve the problems in many time, but still cannot get the correct answer, can someone kindly help me to solve the problem, please? 1. Suppose the Moon is at a (center-to-center) distance D from Earth. Find an exact expression for the magnitude of the tidal force...
Thursday, December 12, 2013 at 5:46am

science
I really need help with science and this is the questin reason for blank because earth is titled 23 1/2 from a line perpendicular to it's orbit,the legth of daylight varies and because of the angle at which the sun's energy strikes a given location through the year.
Wednesday, December 11, 2013 at 5:49pm

Check my Science questions?
1. Why is it rare for the soft parts of an organism to become a fossil? The soft parts take a long time to decay. The soft parts can be eaten by other animals. The soft parts cannot be buried in sediment. The soft parts form petrified fossils. 2. Which of the following terms ...
Wednesday, December 11, 2013 at 1:36pm

physics
An airplane with a speed of 46.4 m/s is climbing upward at an angle of 44° counterclockwise from the positive x axis. When the plane's altitude is 700 m the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath ...
Tuesday, December 10, 2013 at 9:14pm

earth
3. What can scientists learn from the rate at which radioactive elements decay?
Tuesday, December 10, 2013 at 6:34pm

Science help,Anyone?
1. Why is it rare for the soft parts of an organism to become a fossil? The soft parts take a long time to decay. The soft parts can be eaten by other animals. The soft parts cannot be buried in sediment. The soft parts form petrified fossils. 2. Which of the following terms ...
Tuesday, December 10, 2013 at 4:52pm

Science help,please...
1. Why is it rare for the soft parts of an organism to become a fossil? The soft parts take a long time to decay. The soft parts can be eaten by other animals. The soft parts cannot be buried in sediment. The soft parts form petrified fossils. 2. Which of the following terms ...
Monday, December 9, 2013 at 8:22pm

science
which of the following will make it harder in the future to develop sustainable methods for humans using resources? A. there will be fewer renewable resources B.more humans will populate the earth C.biodiversity naturally reduces over time D.more humans will recycle materials
Monday, December 9, 2013 at 5:40pm

Astronomy
1. Consider an asteroid of radius 2 km and density 2,500 kg/m^3 impacting the Earth. When it collides with the surface its kinetic energy is, to a large extent, dumped into the environment, some as heat vaporizing rock and some as mechanical energy throwing rock to great ...
Monday, December 9, 2013 at 3:49pm

Astronomy
The volume of a ball is given in terms of its radius by V=(4*pi/3)*R^3. Use this to find the average density of Nursat, i.e. the mass per unit volume. Use Earth'€™s mass in kg from the Table of Constants to express your answer in kg/m3.
Monday, December 9, 2013 at 3:48pm

Astronomy
1. At opposition, Nursat(is observed to be in opposition every 374 days.) is observed to subtend an angular radius of 7.1523 arcseconds. Use this and the conversion factors in our Table of Constants to find the radius of Nursat in km. 2. Nursat has a moon, Sunaj, which is ...
Monday, December 9, 2013 at 3:46pm

Astronomy
A possible trajectory for sending a spacecraft to Mars is an elliptical orbit with Earth at its perihelion and Mars at its aphelion. The craft would be launched out of low-Earth orbit by a quick burst of rockets into solar orbit, and would then "coast'' until ...
Monday, December 9, 2013 at 3:42pm

english
Read the paragraph below and complete the cause-and-effect chart. Erosion is a natural process. During the erosion process, soil and rocks are worn away by the elements. Most erosion results from a combination of several factors, including heat, cold, gases, water, wind, ...
Monday, December 9, 2013 at 5:03am

math
A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is 32.2 ft./sec^2. How far is the satellite from the surface of the earth?
Sunday, December 8, 2013 at 11:18pm

math alegebra
A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is 32.2 ft./sec^2. How far is the satellite from the surface of the earth?
Sunday, December 8, 2013 at 10:32pm

meteogology
Does the equator receive perpendicular sun rays to the Earth's surface most of the 365 day year.
Friday, December 6, 2013 at 6:47pm

Physics
The gravitational acceleration on the surface of Mercury is 0.38 times that of Earth. Its radius is also about 0.38 times that of the Earth. What is the ratio of the density of Mars to that of Earth?
Thursday, December 5, 2013 at 7:55pm

Astronomy
1. Imagine that the Earth¡¦s spin were to be reversed, so that the planet rotated about its axis from East to West, at the same rate at which it now rotates from West to East. If Earth¡¦s orbital motion about the Sun were unchanged, which of these ...
Thursday, December 5, 2013 at 1:41pm

Astronomy
Star Right Ascension Declination Aldebaran 4h 36m 16¢X 31' Miaplacidus 9h 13m -69¢X 42' Deneb 20h 41m 45¢X 20' Regulus 10h 08m 12¢X 18' Hadar 14h 04m -60¢X 24' 1.If Aldebaran is crossing your local meridian, how long would you need ...
Thursday, December 5, 2013 at 1:38pm

physics
A satellite of mass 225 kg is launched from a site on Earth's equator into an orbit at 200 km above the surface of Earth. (The mass of the Earth is 5.98 1024 kg, and the radius of the Earth is 6.38 103 km.) (a) Assuming a circular orbit, what is the orbital period of this ...
Wednesday, December 4, 2013 at 11:09pm

physics
Suppose a driver's car needs to travel 46.4 miles in 1.000 hour at a constant speed. If the tires of the car have a rolling radius of 28.4 cm, what will be the period of rotation of each tire? Suppose a moon of a planet in a distant solar system has an average orbital ...
Wednesday, December 4, 2013 at 9:53pm

earth
A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is 32.2 ft./sec^2. How far is the satellite from the surface of the earth?
Wednesday, December 4, 2013 at 8:12pm

Science help (just 4 questions)
1. Which of the following is an example of an environmental pressure? (1 point) the air pressure in the atmosphere a lake that is gradually running out of water a fight between two members of the same species breeding between two members of the same species 2. Which of the ...
Wednesday, December 4, 2013 at 1:22pm

Physics
A400 N child is swing that is attached tow ropes 2m long , find the gravitational potential energy of the child-earth system relative to the red line level when ropes make an angle with the vertical .
Wednesday, December 4, 2013 at 7:12am

physics
An obnoxious brat assigns his 0.0221-kilogram pet mouse Mickey the role of stunt mouse by stuffing him into a spring gun and shooting him up into the air at some angle. During the launch process the spring transfers 0.707 J of energy into the \'mouse Earth gravitational ...
Tuesday, December 3, 2013 at 11:32pm

physics
An obnoxious brat assigns his 0.0221-kilogram pet mouse Mickey the role of stunt mouse by stuffing him into a spring gun and shooting him up into the air at some angle. During the launch process the spring transfers 0.707 J of energy into the \'mouse Earth gravitational ...
Tuesday, December 3, 2013 at 9:02pm

Physics
How far from the center of the earth must a satellite be placed so that the acceleration due to gravity is half the value at the surface? (Hint: the diameter of the earth is 1.3x107 m.)
Tuesday, December 3, 2013 at 11:18am

business law
*The below is a scenario in which I have to make an IRAC for (not sure if you know what that is) but read the scenario and see if "Faye" is able to leave legally without ramifications. You must also list the legal rules that apply to this scenario..(for example, if ...
Monday, December 2, 2013 at 3:10pm

Physica Science
Describe the movement of the Earth based upon the perceived change in positions of the stars
Monday, December 2, 2013 at 12:40pm

physics
On Earth a baseball player can hit a ball 120 m by giving it an initial angle of 45° to the horizontal. Take the acceleration due to gravity as g=10 ms^-2 Suppose the batter repeats this exercise in a space 'habitat' that has the form of a circular cylinder of ...
Monday, December 2, 2013 at 3:01am

Science
Three light beams encounter a medium. One light ray is reflected, while the other two are absorbed. How can the medium be described? Transparent Translucent Opaque or Clear In satellite communication, does the satellite... Receive radio signals Prevent radio signals Send radio...
Saturday, November 30, 2013 at 2:46am

physics
Consider the earth following its nearly circular orbit (dashed curve) about the sun.(Figure 2) The earth has mass mearth=5.98×1024kg and the sun has mass msun=1.99×1030kg. They are separated, center to center, by r=93millionmiles=150millionkm.
Wednesday, November 27, 2013 at 11:59pm

poetry
Could you help me answer these questions using William Cullen Bryant's poem, "The Prairies?" Thank you so much! I've attached a link to the poem. The poem text is widely available online if you just google the title/author Here are the questions I am ...
Wednesday, November 27, 2013 at 11:54am

science
what physical components do the sun and earth have in common ? a) core and mantle b) core and atmosphere c) crust and atmosphere d) mantle and crust
Wednesday, November 27, 2013 at 9:28am

physics, magnetism
A long thin copper wire has a mass of 100 grams / meter. If it is arranged near the surface of the earth pointing north in a 0.5 Tesla magnetic field pointing west, what current (in amps) is needed to levitate the rod (against gravity)?
Tuesday, November 26, 2013 at 6:45am

Physical Science
What are the tallest and longest mountain chais on Earth? How were they formed?
Monday, November 25, 2013 at 1:45pm

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

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