Tuesday
January 17, 2017

Homework Help: Science: Earth

Recent Homework Questions About Earth

Thomas Paine
The cause of America is in a great measure the cause of all mankind. Many circumstances hath, and will arise, which are not local, but universal, and through which the principles of all Lovers of Mankind are affected, and in the Event of which, their Affections are interested...
Saturday, January 16, 2010 by Kelly

earth
A man with a weight of 1000 newtons on earth visits each planet what is his weight on each?
Saturday, January 16, 2010 by Anonymous

space
why cant petrol driven cars we use on earth be used on the earth?
Saturday, January 16, 2010 by Anonymous

earth
1) On a horizontal straight line graph of distance (vertical axis) against time, which variable is not changing? a) Distance b) Time c) Wind speed d) Temperature 2) A graph of distance against time is a straight line with a slope of 1. If you wait for 3 time units to pass, how...
Friday, January 15, 2010 by Sarah

english
what is being said in the following line:   “Foul devil, for God’s sake, hence, and trouble us not; For thou hast made the happy earth thy hell, Fill’s it with cursing cries and deep exclaims.”
Friday, January 15, 2010 by kim

physics(universal law of gravitation)
a satellite has a mass of 100 kg and is located at 2 x 10^6 m above the surface if the Earth. wHAT is the potential energy associated with the satellite at this location? What is the magnitude of the gravitational force on the satellite?
Thursday, January 14, 2010 by Nina

Earth Science
Plinian eruptions are the most powerful type of eruption. They are usually caused_______magma. A)rhyolitic B)bybasaltic C)andesitic
Thursday, January 14, 2010 by george

Precalculus
Can someone check my answers please? Thank you :) 30. What is Earth's rotational speed at (a) Bangor, Maine (latitude 45 degrees N) and (b) Rio de Janeiro, Brazil (latitude 23 degrees S)? (It's given in the problem also that Earth's rotational speed at the equator ...
Wednesday, January 13, 2010 by Emily

AP English
From The Great Gatsby by Fitzgerald Tom flung open the door, blocked out its space for a moment with his thick body, and hurried into the room. “Mr. Gatsby!” He put out his broad, flat hand with well-concealed dislike. “I&...
Tuesday, January 12, 2010 by Priscilla

11th grade
Four point charges of 89.67, 16.46, 12.1, and 19.76 microcoulombs are located at the corners of a rectangle of length 42 cm and width of 638 cm, as shown. A sodium ion is placed at the point halfway between 16.46 and 12.1, and then released from rest. What will be its speed ...
Monday, January 11, 2010 by tv

Physics
Four point charges of 89.67, 16.46, 12.1, and 19.76 microcoulombs are located at the corners of a rectangle of length 42 cm and width of 638 cm, as shown. A sodium ion is placed at the point halfway between 16.46 and 12.1, and then released from rest. What will be its speed ...
Monday, January 11, 2010 by tv

Math
"during the opening sequences of " the day the earth stood still " the alein craft orbits the earth at 6437.376 kph. If the spaceship is flying 1.25km above the surface area of the earth , a) find the distances travelled to make a single orbit of the earth . b) ...
Monday, January 11, 2010 by Rogan Anantharajh

geography
Which statements describe the management of the earth's resources? 1)Resource management becomes more important as the population increases 2)Resource management is a global issue. 3)Resource management is a local issue. 4)Resource management is a national issue. 5)...
Monday, January 11, 2010 by george

English
Hey, I was wondering if I could get some help looking for figurative language in this poem, like simile, assonance, alliteration, personification, metaphor, onomatopoeia, ext. Thanks! What do I care that the stream is trampled, the sand on the stream-bank still holds the print...
Sunday, January 10, 2010 by Briana

physics
does anyone know who conducted the experiment or a credible description of the experiment that helped prove Einstein's thought experiment: the twin paradox? as in the experiment in which one cesium-beam atomic clock stays on Earth, while another one takes flight and the ...
Sunday, January 10, 2010 by frank

earth science
how do the four subsystems of earth interact with one another
Friday, January 8, 2010 by shaquetta

earth science
what are the landscape regions that the hudson river flows through
Thursday, January 7, 2010 by david

physics
The distance from the center of the earth to a point where the acceleration due to gravity is g/16 is none of the these. 4RE. 3RE. 16RE. 1/4RE.
Thursday, January 7, 2010 by jesse

Geography
question: Compare and contrast the various sources of energy. answer: There are various sources of energy, which modern industrial countries use to light cities, power cars and airplanes, and run computers and other electrical machines. The main energy sources for all these ...
Thursday, January 7, 2010 by y912f

English
1)A considerate person is someone that (or only who is possible) always thinks of others 2)In Montgomery , Alabama, black people were not allowed to do a lot of things, for example go to restaurants, sit in the front of buses (is for example correct: can I use such as to go to...
Thursday, January 7, 2010 by Franco

PHYSICS
a 17 of model plane is flying at a horizontal speed of 14 m/s the plane goes into a dive and levels off 21 m closer to the earth what was the ammount of potentiomal energy lost in the dive
Wednesday, January 6, 2010 by landon

Science
What is th weight on earth of a girl with a mass of 30 kg?
Tuesday, January 5, 2010 by Janise

science
When is the Earth farthest from the sun?
Tuesday, January 5, 2010 by Joe

Technology
(this post never got answered :() I need help with these two questions: 1. Sheet metal and copper piping are examples of a. natural resources b. industrial products c. consumer products d. standard materials I think it's either B or D 2. Which of the following would be ...
Monday, January 4, 2010 by y912f

Geography
Here are some questions that I need help on: 7. Similar climates, vegetation, or landforms can be used to divide the earth into a. political aregions. b. formal regions. c. functional regions. d. census regions. I know it's not c or d. I think it's B 11. All of the ...
Monday, January 4, 2010 by y912f

science
what planet has almost the same density as earth?
Monday, January 4, 2010 by Aaron a.k.a A7X

Physics
What is the gravitional potential energy of a 100-kg rocket when it is at a distance of 1.0 x 10^7 m from the center of the earth. {Assume G = 6.7 x 10^ -11 m^3 / kg x s^2 and Earth's mass is 6.0 x 10^ 24 kg} GIVEN: m1 = 100 kg d = 1.0 x 10^7 m Earth's m2 = 6.0 x 10^ ...
Monday, January 4, 2010 by Priscilla

Earth Science
Two meanings for the horizontal lines on the geologic History NYS chart.
Sunday, January 3, 2010 by Ann

Physics
What is the weight (in Newtons) of an object with a mass of 25 kg on the surface of the Earth?
Sunday, January 3, 2010 by Aly

earth
limestone and marble are both used in sculpting. Limestone become marble under heat and pressure. Classify each rock and tell which would be harder to sculpt
Sunday, January 3, 2010 by Dominic

Science
In __, the amplitude of the carrier wave is changed to transmit information; the frequency is not changed. In __, the frequency of the carrier wave is changed __ phones and __ phones use radio waves to transmit signals. __ use electromagnetic signals from a base station ...
Sunday, January 3, 2010 by Michael Jones

Physics
At the distance of the earth from the sun the pressure exerted by sunlight is avout 10^-5 Pa How much force does this pressure exerted on 10m^2 array of solar cells on a satellite when the array is perpendicular to the direction of the sunlight? If the satellite has a mass of ...
Saturday, January 2, 2010 by Angel

Science
At the distance of the earth from the sun the pressure exerted by sunlight is avout 10^-5 Pa How much force does this pressure exerted on 10m^2 array of solar cells on a satellite when the array is perpendicular to the direction of the sunlight? If the satellite has a mass of ...
Saturday, January 2, 2010 by Angel

physics
Jessica's weight is 540 newtons. According to the Third Law, if the Earth pulls on Jessica with a force of 540 N, then Jessica pulls on the Earth with a force of 540 newtons that acts in the opposite direction. However, if Jessica stumbles while rollerblading, she will ...
Friday, January 1, 2010 by Anonymous

Physics
I'm having trouble with this question. Some __ objects emit no visible light but are known through __ and radio images; satellite observations __ Earth's atmosphere help scientist study space at wavelengths that do not reach Earth's surface. If you can answer it, I...
Friday, January 1, 2010 by Demi

Science
D. _____ has wavelengths between 0.7 and 0.4 millionths of a meter. D1. What you see as different colors are electromagnetic waves of different ______. D2. Red ligh has the _____ wavelengths (lowest frequency); blue light has the _____ wavelengths (highest frequency). E. ...
Friday, January 1, 2010 by Dillon

Technology
I need help with these two questions: 1. Sheet metal and copper piping are examples of a. natural resources b. industrial products c. consumer products d. standard materials I think it's either B or D 2. Which of the following would be considered part of a primary ...
Thursday, December 31, 2009 by y912f

earth Science
When a river is lengthened due to forward erosion, a _____ has occurred.
Friday, December 25, 2009 by brian

physics
The Moon's mass is 7.34 x 10^22 kg, and it is 3.8 x 10^8 away from Earth. Earth's mass if 5.97 x 10^24 kg. a. Calculate the gravitional force of attraction between Earth and the Moon. b. Find Earth's gravitional field at the moon. GIVEN: Moon's mass = 7.34 x 10...
Thursday, December 24, 2009 by Heart

Physics
1. The problem statement, all variables and given/known data The asteroid Icarus, though only a few hundred meters across, orbits the Sun like the other planents. Its period is about 410 d. What is its mean distance from the Sun? 2. Relevant equations Keplers Law T_1 ^2 / T_2...
Thursday, December 24, 2009 by Rau

Physics
Light from the Sun reaches Earth in 8.3 min. The speed of light is 3.00 x 10^8 m/s. How far is Earth from the Sun? GIVEN: t = 8.3 min V = 3.00 x 10^8 m/s --> Would acceleration be 9.81 m/s^2? Is it this equation d = Vit + 1/2 a t^2
Wednesday, December 23, 2009 by Priscilla

physics
i posted this earlier but am now stuck on getting through the algebra 1. The problem statement, all variables and given/known data 13) (II) At what distance from the Earth will a spacecraft on the way to the Moon experiance zero net force due to these two bodies becasue the ...
Wednesday, December 23, 2009 by Jake

Physics
I'm not sure how to go about solving this problem the algebra gets very messy... At what distance formt he EArth will a spacecraft on the way to the Moon experiance zero net force due to there two bodies because the Earth and Moon pull with equal and opposite force? THANKS
Wednesday, December 23, 2009 by Jake

9th grade
What is a capillary in Earth science terms?
Tuesday, December 22, 2009 by Aby

science
what isthe sun main thing on earth
Tuesday, December 22, 2009 by angelica

Paul
Determien the mass of the Sun using the known value for the period of the Earth and its distance from the Sun. I do not remeber how to do this F = ma = Fg = GmM/r^2 Period of earth 3.16 E 7 s radius earth to moon = 1.5 E 11 m
Tuesday, December 22, 2009 by Physics

science
suggest only one best method to avoid such a collision if a near earth asteroid of radius 50m strikes the earth surface?
Monday, December 21, 2009 by sam

science
suggest only one best method to avoid such a collision if an earth asteroid strikes earth surface?
Monday, December 21, 2009 by sam

science
Suppose a near earth asteroid of radius 50m strikes the earth surface.what could be the impact of such a collision?
Monday, December 21, 2009 by sam

science
suppose an asteroid of radious 50m strikes the earth surface,what could be the impact of such collision
Saturday, December 19, 2009 by sukhbir

physics
What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/22 of its value at the Earth's surface? _ m
Friday, December 18, 2009 by asia

Biology 100
Read Ch. 9, section 9.1, How Did Life Originate? Reasearch a theory about the origin of life on Earth other than the one summarized under Piecing it Together on p. 247 of the text. Use the following key words and Web sites to assist you with your search: Origin of life, ...
Thursday, December 17, 2009 by Rayna

Biology 100
Read Ch. 9, section 9.1, How Did Life Originate? Reasearch a theory about the origin of life on Earth other than the one summarized under Piecing it Together on p. 247 of the text. Use the following key words and Web sites to assist you with your search: Origin of life, ...
Thursday, December 17, 2009 by Rayna

physics
An artificial satellite placed into earth's orbit has a mass of 1250kg. It travels at an average distance of 222.5km above the surface of the earth. The radius of the earth is 6370km. What acceleration due to gravity does the earth give the satellite? I know to find the ...
Wednesday, December 16, 2009 by sh

physics
Hint: for part I use G = 6.67 times 10 to the negative 11. for part II, you don’t need to do the full calculation, you can just use your knowledge of how force of gravity depends on mass and separation distance. Compare the gravitational force on a 49 kg mass...
Tuesday, December 15, 2009 by chitra

Geography
Which statements describe the management of the earth's resources? Resource management becomes more important as the population increases. Resource management is a global issue. Resource management is a local issue. Resource management is a national issue. Resource ...
Tuesday, December 15, 2009 by george

science
HOW COULD MEASURING THE ORBIT OF A COMET HELP SCIENTISTS UNDERSTAND WHEN IT WILL NEXT BE VISIBLE FROM EARTH?
Monday, December 14, 2009 by NKEM

SCIENCE
HOW COULD MEASURING THE ORBIT OF A COMET HELP SCIENTISTS UNDERSTAND WHEN IT WILL NEXT BE VISIBLE FROM EARTH?
Monday, December 14, 2009 by ELIZABETH

annie
You want to get an idea of the magnitude of magnetic fields produced by overhead power lines. You estimate that a transmission wire is about 11m above the ground. The local power company tells you that the line operates at 13kV and provide a maximum of 86MW to the local area. ...
Monday, December 14, 2009 by physics help

English
1. We will lead your children to the joys of reading. 2. We will lead your children to the joy of reading. 3. We will lead your children to joy of reading. (Which expressions are grammatical? Are both acceptable?) 4. I learn many things in class from her kind teaching. 5. I ...
Saturday, December 12, 2009 by rfvv

DRAMA
1. "The best in this kind are but shadows" is A. Titania talking about men. B. Theseus talking about plays. C. Demetrius talking about the women he has loved in the past. D. Bottom talking about his fellow craftsmen. 2. One difference between tragedy and comedy is ...
Thursday, December 10, 2009 by Ari

Earth Science
According to Kepler's law of harmonies, which planet takes the longest to orbit the Sun?
Thursday, December 10, 2009 by Chris

earth
what type of magma flows very quickly
Thursday, December 10, 2009 by bobby

earth
What does the phrase "salt of truth" mean?
Wednesday, December 9, 2009 by joyce

force of gravity
A satellite orbits around the earth. The mass of the satellite is 1170 kg, and its altitude is 220 km. The mass of the earth is 5.98×1024 kg. The radius of the earth is 6.38×106 m. 1)What is the gravitational force on the satellite? 2)What is the ...
Wednesday, December 9, 2009 by ami

Science
1. Which one of the following frequencies of a wave in the air can be heard as an audible sound by the human ear? A. 0.10 Hz B. 10 Hz C. 1,000 Hz (my Answer) D. 100,000 Hz 2. If two waves with equal amplitudes and wavelengths travel through a medium in such a way that a ...
Wednesday, December 9, 2009 by Ari

Calc./ Physics
when apollo 15 astronaut David Scott dropped a hammer and a feather on the moon to demostrate that in a vacuum all bodies fall with the same (constant) acceleration, he droppes them from 4 feet above the lunar surface. the television shows them fallen more slowly than on earth...
Wednesday, December 9, 2009 by Rachel

adult education
making copious reference to fanon's text the wretched earth,give as many arguments for anti-colonial violence as you can identify in his essay.evaluate each of the arguments by considering objections against it and see if fanon's argument can be resued from the ...
Tuesday, December 8, 2009 by feyi

Earth Science
Considering the amount of energy required to produce animal-based foods and goods, should humans change their habits so they consume products closer to the bottom of the food chain because it is more efficient? PLEASE HELP.
Tuesday, December 8, 2009 by Lori

Earth Science
To measure the strength of an earthquake, you can use either a______scale or______scale. A)Richter B)seismograph C)mercalli intensity part:2 A)moment magnitude B)seismogram C)mercalli intensity
Monday, December 7, 2009 by george

Science
Deep within the earth, the process of mantle___?___drives plate tectonics A)convection B)subduction C)currents D)condensation
Monday, December 7, 2009 by george

science
why is the angle of rays of sunlight so important in determining the amount of energy collected by the earth
Monday, December 7, 2009 by j

Poetry, Part 2
1. Hopkins’s use of “seared,â€&​#157; “bleared,â€​ and “smearedâ€&​#157; is an example of A. metaphor. C. simile. B. assonance. D. alliteration. 2. ...
Monday, December 7, 2009 by Ari

Earth Science
Where a major earthquake has happened in the past, but not in a while, is called a seismic? a)gap b)wave c)fault d)scale
Monday, December 7, 2009 by george

Astronomy
If stars should always be visible, where should you be located on earth? Can I answer this considering the celestial sphere and the ecliptic? I am not sure how...
Sunday, December 6, 2009 by O_o Rion

physics
Calculate the force of gravity on a spacecraft 12800 km above the earth's surface if its mass is 700 kg.
Sunday, December 6, 2009 by Cyn

Math
It takes the earth about 31,558,100 seconds to circle the sun. By how many seconds does this exceed the number of seconds in 365 days?
Sunday, December 6, 2009 by Noah

science
scientists often use models to study the movement of earth and it's moon. Why do they use models to study the movements? please help pretty pretty please with cherry on top!
Wednesday, December 2, 2009 by Lia Help!

physics bobpursly help still having trouble
A satellite in a circular orbit around earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. A large fragment m=60 kg is ejected in the backwards direction so that it is stationary with respect to the earth and falls directly to the ...
Wednesday, December 2, 2009 by Andy

Science
scientists often use models to Study the movement of earth and it's moon. Why do they use models to study the movements?
Wednesday, December 2, 2009 by Lia Help!

physics
A rocket is launched straight up from the earth's surface at a speed of 1.80×104 m/s^2. a)What is its speed when it is very far away from the earth?
Tuesday, December 1, 2009 by kelly

physics!!!!
A spaceship passes Earth at a speed such that γ = 112. A creature aboard the vessel does the Mongoian greeting dance that takes it 21 s (on its clock -- bought on a previous visit -- which is why it reads in seconds) to perform. How long will the welcoming committee on ...
Monday, November 30, 2009 by Jordan

physics Bob Pursley plz help
A satellite in a circular orbit around earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. A large fragment m=60 kg is ejected in the backwards direction so that it is stationary with respect to the earth and falls directly to the ...
Monday, November 30, 2009 by Andy

Physics Meteorite
A satellite in a circular orbit around earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. A large fragment m=60 kg is ejected in the backwards direction so that it is stationary with respect to the earth and falls directly to the ...
Monday, November 30, 2009 by Andy

physics
what is the mass of a 1000N man on earth?
Sunday, November 29, 2009 by april

4th grade Science
How is the composition of Uranus different from Earth?
Sunday, November 29, 2009 by Hayley

physics
a space shuttle is in a cic ular orbit at a height of 250 km, where the acceleration os earth,s gravity is 93 percent of its surface value. that is the period of its orbit
Saturday, November 28, 2009 by james

physics
estimate the rotational kinetic energy of earth, assuming it to be a solid sphere of uniform density
Saturday, November 28, 2009 by devin

science
can you give me some facts and info bout how plate tectonics accounts for the features and processes that geoscientists observe in the earth -thank you
Friday, November 27, 2009 by Christina

Science
Can you give me some information and facts about the flow of matter and energy in the earth -thank you
Friday, November 27, 2009 by Christina

gr 11 physics
as a rocket carrying a space probe acceleraes away from earth the fuel is being used up and the rocket's mass becomes less when the mass of a rocket(and its fuel) is M and the distance of the rocket from eart's centre is 1.5rE, the force of gravitational attraction ...
Thursday, November 26, 2009 by mat

astronomy
Mars has a mean density less than the mean density of the Earth's mantle. How is it possible that Mars could have a metallic core given this fact? Hint: No calculations are required. Compare the densities used in part a) with the density of mantle rocks like basalt at one ...
Thursday, November 26, 2009 by o_O rion

astrophysics
Mars has a mean density less than the mean density of the Earth's mantle. How is it possible that Mars could have a metallic core given this fact? Hint: No calculations are required. Compare the densities used in part a) with the density of mantle rocks like basalt at one ...
Thursday, November 26, 2009 by cosmos

astrophysics
1) Every second the Sun outputs 3.90* 10^26 Joules of energy. Power is energy output per unit time and is given in units of Watts (W) where 1 W = 1 Joule per second. The Sun's power output is therefore 3.90*10^26 Watts. This is called the solar luminosity. As this energy ...
Tuesday, November 24, 2009 by Easha

astrophysics
1) Every second the Sun outputs 3.90* 10^26 Joules of energy. Power is energy output per unit time and is given in units of Watts (W) where 1 W = 1 Joule per second. The Sun's power output is therefore 3.90*10^26 Watts. This is called the solar luminosity. As this energy ...
Tuesday, November 24, 2009 by Easha

english II
Error in Sentence Consistency and Parallelism. the answer is b. A.If the rain would stop, then the grounds crew would uncover the infield and the game could resume. B.Cyclists and joggers are everywhere-on country roads, in city streets, on the boardwalk, and in the park. C.A ...
Tuesday, November 24, 2009 by Shaquitta

english II
sentence contain and error in adjectives and adverbs. The answer is a. A.Jupiter is more far away from the sun than is Earth. B.Today slim women are considered beautiful, but in the age of Rubens, pleasingly plump females were in fashion. C.An ace in the outfield, she caught ...
Tuesday, November 24, 2009 by Shaquitta

Math
You are standing on the equator of the earth (radius 3960 miles). What is your linear and angular speed?
Tuesday, November 24, 2009 by Anonymous

9th grade
each question is 10 points each, and i don't get 4 questions. I am in Earth Science and in 9th grade i would appreciate it if some one would help me. THANKS ! Where have earthquakes occurred most frequently during the last one hundred years? 1) in the polar regions 2) in ...
Monday, November 23, 2009 by Alicia

physics
An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force? Is A the correct answer? a) That there is no reaction force-the net force on the object is zero, so the ...
Monday, November 23, 2009 by ronnie

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Homework Help: Science