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November 23, 2014

Homework Help: Science: Earth

Recent Homework Questions About Earth

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math
The space station is going 17500 mph as it orbits the earth. How long will it take to orbit 1 time if the earths diameter is 7926 miles and the space station orbits at 240 miles above the earth.
Sunday, March 25, 2012 at 2:29pm

physics
The difference between energy radiated from the sun and energy radiated from the Earth has to do with ____________________. A) Neither of these.B) Both of these.C) radiation frequencies.D) the amounts of radiant energy.
Sunday, March 25, 2012 at 2:02pm

physics
The difference between energy radiated from the sun and energy radiated from the Earth has to do with ____________________. A) Neither of these.B) Both of these.C) radiation frequencies.D) the amounts of radiant energy.
Saturday, March 24, 2012 at 9:44pm

physics
Which of these two bodies gets its internal heat from nuclear processes? A) Both.B) Sun.C) Neither.D) Earth.
Saturday, March 24, 2012 at 9:44pm

english ~ poems
America by James Monroe Whitfield "America, it is to thee, Thou boasted land of liberty,— It is to thee I raise my song, Thou land of blood, and crime, and wrong. It is to thee, my native land, From whence has issued many a band To tear the black man from his soil, ...
Saturday, March 24, 2012 at 5:03pm

NCSU
A man of mass 83.5 kg walks down the aisle of an airplane at a speed of 1.60 m/s in the forward direction while the plane moves at a speed of 295 m/s relative to the earth. (a) Find the man's kinetic energy relative to the plane. (b) Find the man's kinetic energy ...
Saturday, March 24, 2012 at 4:47pm

science
A book is on top of a table. Earth's gravity exerts a constant force of 15N on the book. Why does the book not move as a result of this force?
Saturday, March 24, 2012 at 1:57pm

English/Poetry
Walt Whitman -- America Centre of equal daughters, equal sons, All, all alike endear'd, grown, ungrown, young or old, Strong, ample, fair, enduring, capable, rich, Perennial with the Earth, with Freedom, Law and Love, A grand, sane, towering, seated Mother, Chair'd in ...
Saturday, March 24, 2012 at 12:10am

Earth/Space Science
In many ways, the floor of oceans is no better explored than space. Why could discoveries such as life around deep-sea hotspots not be investigated until the past few decades?
Thursday, March 22, 2012 at 8:32pm

physics
How might you determine the age of a star from an Earth-based telescope? What measurements might you make?
Thursday, March 22, 2012 at 9:55am

Opinion
Which class would be better(easier) to take Earth Science or Astronomy?
Wednesday, March 21, 2012 at 8:29pm

science
If Deneb and Rigel were located at alpha Centauri's distance from earth, how would they appear? PLEASEEE HELPPPPPP!!!!!!!!!!
Wednesday, March 21, 2012 at 6:37pm

Science
1.What is refraction? The bending of light as it passes through matter 2.What type of lens would you use to magnify your view of a butterfly? Concave 3.What is a sound wave? Sound waves are waves of energy moving through matter.Sound waves are vibrations of molecules,molecules...
Tuesday, March 20, 2012 at 9:32pm

Earth/Space Science
Which of the following is responsible for absolute sea-level changes? A. formation and melting of ice sheets B. erosion of land surfaces by wind and water C. human activities along coastlines, such as development and grading D. movements of a tectonic plate, causing part of ...
Tuesday, March 20, 2012 at 5:20pm

Earth Science
Two locations, one in northern canada and one in the southwestern United states, recive the same amount of precipitation each year. The location in canada is classified as a humid climate. Why would the location in the United states be classified as an arid climate?
Tuesday, March 20, 2012 at 1:11am

Geometry
11-1 Lines that Intersect Circles 8. The International Space Station orbits Earth at an altitude of 240 miles. What is the distance from the space station to Earth's horizon to the nearest mile?
Monday, March 19, 2012 at 8:13pm

physics
A 4.0 kg object is lifted 1.5 m. (a) how much work is done against the earth's gravity ? (b) repeat if the object is lowered insteadof lifted
Monday, March 19, 2012 at 1:45pm

Physics
A 0.31-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.6 m. (a) Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone–Earth system before the stone is released? (b) ...
Monday, March 19, 2012 at 4:14am

Earth/Space Science
Why are icebergs in shipping lanes so hazardous?
Sunday, March 18, 2012 at 8:49pm

physics
Planet X has the same mass as earth, but its radius is only half as big. How does the gravity on this planet compare with the gravity on our planet earth?
Sunday, March 18, 2012 at 9:46am

trig
In a computer simulation, a satellite orbits around Earth at a distance from the Earth's surface of 2.1 X 104 miles. The orbit is circular, and one revolution around Earth takes 10.5 days. Assuming the radius of the Earth is 3960 miles, find the linear speed (velocity) of ...
Saturday, March 17, 2012 at 10:59pm

Pysics
Planet X has the same mass as earth, but its radius is only half as big. How does the gravity on this planet compare with the gravity on our planet earth?
Saturday, March 17, 2012 at 9:11pm

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 Alexandria, 500 miles north (...
Friday, March 16, 2012 at 7:54pm

earth
How do Plate tectonics affect the Atmosphere, Hydrosphere, Geosphere, and Biosphere? Thanks SO much in advance!:D
Thursday, March 15, 2012 at 11:10pm

SCIENCE/ earth
Thanks Ms Sue!!!
Wednesday, March 14, 2012 at 12:36pm

SCIENCE/ earth
plate tectonics crossword puzzle what Qs and As can i use??????? PLZZZZZ HELP ME!!!!!!!!!!!!!
Wednesday, March 14, 2012 at 12:12pm

earth
Suppose that an object on Earth has a known mass of 80 kgs. Will the mass of that object be less than, more than, or the same as on the other planets in our solar system? Explain your answer.
Wednesday, March 14, 2012 at 12:04am

physics
How far (in meters) above the earth's surface will the acceleration of gravity be 27.0 % of what it is on the surface? can someone please just give me an equation to figure this out please I am lost
Tuesday, March 13, 2012 at 4:47pm

physic
How far (in meters) above the earth's surface will the acceleration of gravity be 27.0 % of what it is on the surface?
Monday, March 12, 2012 at 8:15pm

biology
briefly describe the basic characteristics that all living things on earth have in common
Monday, March 12, 2012 at 5:18pm

physics
A rocket carrying a satellite is accelerating straight up from the earth's surface. At 1.20 after liftoff, the rocket clears the top of its launch platform, 68 above the ground. After an additional 4.85 , it is 1.50 above the ground.Calculate the magnitude of the average ...
Sunday, March 11, 2012 at 7:59am

Physics
An asteriod is found a distance from the sun equal to 32 units times the earth's distance. What will be the length of time in years required for this asteriod to make one revolution around the sun?
Saturday, March 10, 2012 at 10:36am

Literacy
13. Which of the following publications are both listed under the "Magazines" results? A. Science News and Earth Island B. The Economist and American Scientist C. Odyssey and Natural History D. Astronomy and Science ANSWER IS A
Saturday, March 10, 2012 at 2:08am

GPH111
The temperature controls to two locations on Earth. Discuss how the 5 factors influencing temperature patterns effect St. Louis, Missouri (38°39' N, 90°W; elevation 535 ft) and Singapore (1°24'N, 103°55'E; elevation 16ft). How does the latitude ...
Friday, March 9, 2012 at 10:46pm

physics
Physics Gravitation help...? hello People i need some help with my physics revision sheet. i cant seem to get my head round it. if anyone could help by telling me how to work it out to get the right answer i would be grateful... answers would also be appreciated. ok here is ...
Friday, March 9, 2012 at 10:21pm

earth
A golfer tees off and hits a golf ball at a speed of 31 m/s and at an angle of 35 degrees. What is the vertical velocity component of the ball? Round the answer to the nearest tenth of a m/s.
Friday, March 9, 2012 at 12:52pm

physics
captain iplanet measures the magnetic forces on a proton which is vertically falling at 1996 m/s at the equator (take the earth's field to be .4 Gauss horizontal and pointing northward). what force would she measure? Give both force and direction.
Friday, March 9, 2012 at 7:49am

principles of physics
Calculate the force of gravity between Earth and the Sun (the Sun's mass = 2.0×10^30 kg; average Earth-Sun distance = 1.5×10^11 m).
Friday, March 9, 2012 at 4:07am

principles of physics
Calculate the force of gravity between a newborn baby (mass = 2.6 kg) and the planet Mars (mass = 6.4 * 10^23kg) when Mars is at its closest to Earth (distance = 5.6 * 10^10m).
Friday, March 9, 2012 at 4:02am

physics
A satellite is in circular orbit above the Earth at an altitude of 2000 km. What is the orbital speed of the satellite? what is the equation i need to use
Friday, March 9, 2012 at 12:07am

physics
A person can jump a horizontal distance of 2.59 m on the Earth. The acceleration of gravity is 11.8 m/s2 . How far could he jump on the Moon, where the free-fall acceleration is 0.297g? Answer in units of m
Thursday, March 8, 2012 at 11:14pm

Physics
You are in a space shuttle traveling in the circular orbit, which is 380 km above the Earth. Your friend is in another space shuttle traveling on the same circular orbit with you, but he is 20 km ahead of you. (a) How long will it take you to catch up with your friend if you ...
Thursday, March 8, 2012 at 9:12pm

physics
Calculate the force of gravity between a newborn baby (mass = 2.6 kg) and the planet Mars (mass = 6.4 * 10^23kg) when Mars is at its closest to Earth (distance = 5.6 * 10^10m).
Thursday, March 8, 2012 at 8:05pm

physics
Calculate the force of gravity between Earth and the Sun (the Sun's mass = 2.0×10^30 kg; average Earth-Sun distance = 1.5×10^11 m).
Thursday, March 8, 2012 at 8:01pm

physics
Calculate the force of gravity between a newborn baby (mass = 2.6 kg) and the planet Mars (mass = 6.4 * 10^23 kg) when Mars is at its closest to Earth (distance = 5.6* 10^10m).
Thursday, March 8, 2012 at 6:50pm

3 grade english ms sue
vowels: r-controlled riddle read a clud and write the list word. when you have written all seven word, the answer will appear in the boxes. THIRD,EARLY, WORLD, CERTAIN, DIRTY, HERSELF, EARTH, WORD, PERFECT, VERB, NERVE, WORM, THIRSTY, WORKOUT, EARN what building has the most ...
Thursday, March 8, 2012 at 6:38pm

physics
A satellite is in circular orbit above the Earth at an altitude of 2000 km. What is the orbital speed of the satellite? what is the equation i need to use
Thursday, March 8, 2012 at 5:05pm

physics
Calculate the force of gravity between Earth (mass = 6.0 * 10^24 kg) and the Sun (mass = 2.0×10^30 kg). The average Earth-Sun distance is 1.5×10^11 m..
Thursday, March 8, 2012 at 1:30pm

Physics
The acceleration of gravity at the surface of the moon is approximately 1/6 that at the surface of the Earth (9.8m/s). What is the weight of an astronaut standing on the moon whose weight on Earth is 180lbs?
Thursday, March 8, 2012 at 12:29am

physics
A pendulum has a period of 0.70 s on Earth. What is its period on a planet where the acceleration of gravity is about 0.51 that on Earth?
Wednesday, March 7, 2012 at 10:59pm

physics
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the pulsar makes one revolution, the rotating beam sweeps across the earth, and the earth receives a pulse of radio waves. For one particular pulsar, ...
Wednesday, March 7, 2012 at 9:56pm

Earth Science
Which of the following statements best describes the recharge zone of an aquifer? Thank you! A) anyplace that the water table of the aquifer meets the surface B) the boundary between the aquifer and the permeable rock above it C) an area above an aquifer that has significant ...
Wednesday, March 7, 2012 at 7:42pm

science 8th grade
ok, i don't have answer to these questions! #8: The interaction of air, water, and _________ causes weather. #9: Violent storms generally form where? #10:clouds form as warm air rises, expands, cools, and becomes saturated, and then _______________ condense(s) into tiny ...
Wednesday, March 7, 2012 at 7:08pm

Physics
a frictionless roller coaster car of mass m = 719 kg tops the first hill with speed v0 = 15.2 m/s at height h = 48.9 m. How much work does the gravitational force do on the car from that point to (a) point A, (b) point B, and (c) point C? If the gravitational potential energy ...
Wednesday, March 7, 2012 at 9:40am

Science
How can scientists use the geologic time scale by sequencing the events of the earth in a time line?
Tuesday, March 6, 2012 at 6:47pm

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?
Tuesday, March 6, 2012 at 6:13pm

Science-Space
Compare Earth and the moon in terms of size and surface gravity.Explain please. What is the relationship between the moon's surface gravity, lack of an atmosphere, and temperature range? Explain please!
Tuesday, March 6, 2012 at 5:42pm

Science
How can scientists use the geologic time scale by sequencing the events of the earth in a time line?
Tuesday, March 6, 2012 at 5:29pm

physics
Calculate the force of gravity on a 1 kg mass at Earth's surface. The mass of Earth is 6.0×10^24 kg , and its radius is 6.4×10^6 m.
Tuesday, March 6, 2012 at 5:04pm

physics
Rank the microtidal forces on your own body, from greatest to least, produced by the:A. JupiterB. PlutoC. Earth greatest to least.
Tuesday, March 6, 2012 at 4:57pm

physics
Which of these cannot occur? A) A satellite orbiting about the equator.B) A satellite orbiting about the Earth's poles.C) Actually all these can occur.D) A satellite orbiting about the Arctic Circle.
Tuesday, March 6, 2012 at 3:51pm

physics
Careful measurements of local variations in the acceleration due to gravity can reveal the locations of oil deposits. Assume that the Earth is a uniform sphere of radius 6370 km and density 5500 kg/m3, except that there is a spherical region of radius 1.7 km and density 944 kg...
Tuesday, March 6, 2012 at 1:08pm

astronomy
A body has four times the mass of the Earth but its radius is two times larger. What is the acceleration of gravity on the surface of this planet? If you were on this planet, should you be able to jump (on average) farther distances, shorter distances or the same distances as ...
Tuesday, March 6, 2012 at 10:22am

ALG/TRIG
Lost is an understatement..please help me understand this. Orbits and Distance Johannes Kepler (1571–1630)discovered a relationship between a planet’s distance D from the sun and the time T it takes to orbit the sun. This formula is , where T is in Earth years and ...
Tuesday, March 6, 2012 at 2:22am

Chemistry
I did a back titration with an unknown carbonate and using the average % carbonate (by mass) which I found to be 27.40% and appropriate calculation decided where the unknown is an alkali metal carbonate or an alkaline earth metal carbonate. I have no idea how to tell the ...
Monday, March 5, 2012 at 9:06pm

Physics
Take the radius of the earth at the equator to be 6380 km a. Find the speed the speed of an object at the equator due to the earth's rotation. ___m/s b. Convert this speed to miles/hour (show your conversion factor in your written backup). __miles/hour
Monday, March 5, 2012 at 5:43pm

Physics
Take the radius of the earth's orbit to be 1.5 x 1011 m. a. Using a year to be 365 days, find the speed of the earth as it moves around the sun. __m/s b. Convert this speed to miles/hour (show your conversion factor in your written backup). __miles/hour
Monday, March 5, 2012 at 4:53pm

physics
A rocket carrying a satellite is accelerating straight up from the earth's surface. At 1.25 s after liftoff, the rocket clears the top of its launch platform, 69 m above the ground. After an additional 4.80 s , it is 1.00 km above the ground. Calculate the magnitude of the...
Monday, March 5, 2012 at 3:50pm

Physics
Take the radius of the earth at the equator to be 6380 km a. Find the speed the speed of an object at the equator due to the earth's rotation. ___m/s b. Convert this speed to miles/hour (show your conversion factor in your written backup). __miles/hour
Monday, March 5, 2012 at 2:28pm

Physics
How far above the surface of Earth would you weigh 63.6 percent of your surface weight?
Monday, March 5, 2012 at 2:23pm

physics
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hits the ball with a speed of 25 m/s at an angle of 28° above the ...
Monday, March 5, 2012 at 11:14am

geometry
The diameter of Earth is 12,742 kilometers; the diameter of the moon is 3476 kilometers. a. If you flew around Earth by following the equator at a height of 10 kilometers, how many trips around the Moon could you take in the same amount of time, at the same height from the ...
Sunday, March 4, 2012 at 11:37pm

physics
Mars Rover When the Mars rover was deployed on the surface of Mars in July 1997, radio signals took about 12 min to travel from Earth to the rover.How far was Mars from Earth at that time?
Sunday, March 4, 2012 at 9:14pm

volume,mass,weight
if you travelled to a planet that had twice the force of gravity of earth and you have taken a small mass that is 1kg what is the mass weight and volume of the 1kg object on the new planet compared to earth
Sunday, March 4, 2012 at 8:45pm

physics
If the radius of the Earth somehow bloated to twice its size, with no changes in mass, your weight at the Earth's new surface would be ___A) one-quarter.B) one eighth.C) the same.D) twice.E) half.
Sunday, March 4, 2012 at 6:17pm

physics
Which of these three produces a greater tidal effect on you right now—the moon, the Earth, or the sunA) The sun.B) The Earth.C) The moon.
Sunday, March 4, 2012 at 6:16pm

physics
Why is your weight not one-quarter as much when you climb to the top of a twice as tall tree? A) Because, quite simply, of Newton's law of action and reaction.B) Because parts of the tree itself gravitationally attract you.C) But it is, in accord with the inverse-square ...
Sunday, March 4, 2012 at 6:14pm

Biology
my sister still be sick so i still helping her post questions. i write paragraph from her textbook that go with question. Ultimately, Darwin recognized in nature a process that operates in a manner similar to the way artifical selection worked on farms and in fields. Darwin ...
Sunday, March 4, 2012 at 12:20pm

physics
Rank the average gravitational forces from greatest to least between:A. Sun and Mars.B. Sun and the Moon.C. Sun and Earth. i answer b,c,a and its wrong
Saturday, March 3, 2012 at 10:16pm

physics
Assume that the Earth is spherical and recall that latitudes range from 0° at the Equator to 90° N at the North Pole. Consider Dubuque, Iowa (42.50° N latitude), and Guatemala City (14.62° N latitude). The two cities lie on approximately the same longitude. Do...
Saturday, March 3, 2012 at 9:31pm

Math
Assume that the Earth is spherical and recall that latitudes range from 0° at the Equator to 90° N at the North Pole. Consider Dubuque, Iowa (42.50° N latitude), and Guatemala City (14.62° N latitude). The two cities lie on approximately the same longitude. Do ...
Saturday, March 3, 2012 at 8:31pm

physics
If the Earth had two identical moons in one circular orbit, and the moons were as far apart in that orbit as they could be, the center of gravity of the Earth-moons system would beA) at the center of the Earth.B) outside the Earth, but beyond the orbital path of the moons.C) ...
Saturday, March 3, 2012 at 3:59pm

physics - please help
Assume the earth is a uniform sphere and that its path around the sun is curcular. Calculate the kinetic energy that the earth has because of its rotation about its own axis. For comparison, the total energy used in the US in one year is about 9.33 x 10^9 J b) Calculate the ...
Saturday, March 3, 2012 at 11:20am

Earth Science
Describe how the principle of superposition was used in determining the relative ages of the cross-sections?
Friday, March 2, 2012 at 4:47pm

principles of physics
If the Earth had two identical moons in one circular orbit, and the moons were as far apart in that orbit as they could be, the center of gravity of the Earth-moons system would beA) at the center of the Earth.B) outside the Earth, but beyond the orbital path of the moons.C) ...
Friday, March 2, 2012 at 11:27am

Science
If a man has a mass of 90 kg on earth, what is his mass on the moon?
Thursday, March 1, 2012 at 7:45pm

Algebra
Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets, but did you know that ...
Thursday, March 1, 2012 at 6:49pm

physics
Determine the velocity of a satellite orbiting Earth at a height of 3.2 x 10^3 meters.
Thursday, March 1, 2012 at 3:10pm

physics
Imagine a planet that orbited the sun at a distance three times that of Earth. What would the period of that planet be in Earth years?
Thursday, March 1, 2012 at 3:09pm

Physics Please help!
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 insidethe front cover ...
Tuesday, February 28, 2012 at 11:08pm

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 insidethe front cover ...
Tuesday, February 28, 2012 at 9:08pm

Physics HELP!!!
A certain satellite has a kinetic energy of 7.5 billion joules at perigee (closest to Earth) and 3.5 billion joules at apogee (farthest from Earth). As the satellite travels from apogee to perigee, how much work does the gravitational force do on it? Does its potential energy ...
Tuesday, February 28, 2012 at 7:54pm

Physics
If an astronaut in full gear has a weight of 1150 N on Earth, how much will the astronaut weigh on the Moon?
Tuesday, February 28, 2012 at 3:51pm

phscal sicence
If an astronaut in full gear has a weight of 1150 N on Earth, how much will the astronaut weigh on the Moon?
Tuesday, February 28, 2012 at 3:50pm

Physics
An electron is moving paralel to the Earth's surface at the equator in a direction 12 degrees south of east. Its velocity is 9.2 x 10^4 m/s and a magnetic force of 9.4 x 10^-18 N is exerted on the electron. If the magnetic field points south at this location, what is the ...
Monday, February 27, 2012 at 10:38pm

science
One factor determining the effect of gravity on objects is their.....? The farther away from Earth an object gets, Earth's gravity affects it ......? Friction that occurs between the surface of around object and another surface is ........? Objects with larger surfaces ...
Monday, February 27, 2012 at 8:39pm

PHYSICS
If your mass on earth is 70 kg what will be your mass on the moon considering that the gravitational field strength on the moon (g) is 1/6 of that on the earth. (g on earth = 10N/kg)
Monday, February 27, 2012 at 7:52pm

english fixed-3
here's what i did for number 4. The world is deserting because we are taking water for granted. If people continue to waste water, the earth’s structure will change and it will be the main cause of earthquake and potentially a tsunami. and for number 5. 5. People ...
Monday, February 27, 2012 at 7:23pm

english fixed -2
thanks for helping write teacher. i fix again my sentences and can you please look at it again. ty John Cervantes Beth Braun February 27, 2012 Blue Gold - World Water Wars 10 key things about the movie Blue Gold - World Water Wars 1. Water is the source of life. We all depend ...
Monday, February 27, 2012 at 6:51pm

science
The words in the bank are air resistance,time, zero, inertia, mass, direction, friction, rolling friction, and less. See if I did them right and if I didn't write anything on the blank, I need help with it. THANKS!!!!!!!!!!!!!!!! 10. Speed can be determined if you know ...
Monday, February 27, 2012 at 6:43pm

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