Wednesday
September 28, 2016

Homework Help: Science: Earth

Recent Homework Questions About Earth

Science
What would be a good way using the terms mass and weight to explain how to measure gold so it's the same on earth and on the moon?
Monday, November 23, 2015 by Patrick

Science
Why would the weight of gold be less on earths moon than it would be on earth?
Monday, November 23, 2015 by Patrick

science
As the moon revolves around the Earth, it also rotates on its axis. Why is it that the the same side of the moon is always visible from Earth?
Sunday, November 22, 2015 by Lakshmi

Physics
The earth spins on its axis once a day and orbits the sun once a year (365 1/2 days). Determine the average angular velocity (in rad/s) of the earth as it (a)spins on its axis and (b) orbits the sun. In each case, take the positive direction for the angular displacement to be ...
Saturday, November 21, 2015 by Jose Luis

Phyics
The foci of the elliptical path for an Earth satellite are __________. A) one at Earth's center and the other elsewhere B) one atop the other at Earth's center C) both inside Earth D) both outside Earth
Saturday, November 21, 2015 by sarah

Physics
Szymon and Chris fly their balloon around the earth in 80 days. Taking the radius of the earth to be 6400 km, calculate their average speed in m/s. I did answered all the homework questions but I didn't know how to do this one?
Saturday, November 21, 2015 by Andrew

math
A low land, 48m long and 31.5 m broad is raised to 6.5 dm. For this, earth is removed from a cuboidal hole, 27 m long and 18.2 m broad, dug by the side of the land. The depth of the hole will be? A man rows 12 km in 5 hrs against the stream, the speed of current being 4 kmph. ...
Friday, November 20, 2015 by adam

Check My Work Social Studies, Ms. Sue, Reed, Please
1. Geographers use the five themes of geography to (2 points) study world history. organize information. study world music. measure locations.• 2. People invented flat maps because globes cannot show (2 points) names of continents. shapes of continents.• enough ...
Friday, November 20, 2015 by Sam

Physics [Help, need answer in 10 min]
During a solar eclipse, the moon (of mass 7.36 × 1022 kg), Earth (of mass 5.98 × 1024 kg), and Sun (of mass 1.99 × 1030 kg) lie on the same line, with the moon between Earth and the Sun. What gravitational force is exerted on the moon by the Sun? The ...
Thursday, November 19, 2015 by James

SCIENCE
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 ...
Thursday, November 19, 2015 by Anonymous

physics
What would be the orbital speed and period of a satellite in orbit 1.50 ✕ 10^8 m above the Earth?
Wednesday, November 18, 2015 by Jackson

English
What does Asimov predict will happen to earth in billions of years? a. it will be burned up by the sun b. its population will increase c. it will shrink slightly in size d. it will change position in the galaxy*****
Wednesday, November 18, 2015 by Ms. Sue?! please help

SS plz help me plzzzzzzz
What are the two major forces that reshape earth? Describe how itworks. plz plz plz help me there are no answer choices hope u can still help
Wednesday, November 18, 2015 by #AriannaGirl :)

English
Please check my answers! This story was pretty confusing to me. 1. The purpose of the anecdotes in "The Last Judgment" about each person Kugler has known serve most to A. generate sympathy for Kugler B. Add characters to the story C. Help the judges make their ...
Wednesday, November 18, 2015 by Anonymous

SS PLZ HELP ME ASAP
What are the two major forces that shape and reshape earth? Describe how each one works. plz plz plz help me there are no answer choices hope u can still help
Wednesday, November 18, 2015 by #AriannaGirl :)

Science
1) Explain why Earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA). What was this particular time period called, and why is this time period not really considered a part of Earth’s ...
Tuesday, November 17, 2015 by Anonymous

SCIENCE check answers please :)
1) Explain why Earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA). What was this particular time period called, and why is this time period not really considered a part of Earth’s ...
Tuesday, November 17, 2015 by Cami

Physics
A satellite is in a circular orbit 810 km above the Earth’s surface; i.e., it moves on a circular path under the influence of nothing but the Earth’s gravity. Find the speed of the satellite. The radius of the Earth is 6.37 × 106 m, and the accel- eration of ...
Tuesday, November 17, 2015 by Kiara

physics
A 4 . 7 kg mass weighs 39 . 95 N on the surface of a planet similar to Earth. The radius of this planet is roughly 6 . 2 × 10 6 m. Calculate the mass of of this planet. The value of the universal gravitational constant is 6 . 67259 × 10 − 11 N · m 2 / ...
Monday, November 16, 2015 by Anonymous

Physics 1111 at UGA
If a projectile is launched from Earth with a speed equal to the escape speed, how high above the Earth's surface is it when its speed is one third the escape speed?
Monday, November 16, 2015 by Merritt

Science
Which of the following gases was most likely present in Earth's earliest atmosphere? A. nitrogen B. hydrogen* C. argon D. oxygen Which of the following statements accurately describes the development of the geologic time scale? A. Scientists developed the geologic time ...
Monday, November 16, 2015 by Anonymous

Science CHECK ANSWERS PLZ
Which of the following gases was most likely present in Earth's earliest atmosphere? A. nitrogen B. hydrogen* C. argon D. oxygen Which of the following statements accurately describes the development of the geologic time scale? A. Scientists developed the geologic time ...
Monday, November 16, 2015 by Anonymous

Physics
Determine the velocity of the Hubble deep space telescope while it is in orbit at a height of 598 km (5.98 x 105 m) above the earth’s surface. The earth’s radius is approximately 6.4 x 106 m. The mass of the earth is 6.0 x 1024 kg.
Sunday, November 15, 2015 by Smit

Physics
rotating space station has radius 1380 m, measured from the center of rotation to the outer deck where the crew lives. What should the period of rotation be if the crew is to feel that they weigh one-half their Earth weight?
Sunday, November 15, 2015 by Anonymous

Math, physics
A rotating space station has radius 1380 m, measured from the center of rotation to the outer deck where the crew lives. What should the period of rotation be if the crew is to feel that they weigh one-half their Earth weight?
Saturday, November 14, 2015 by Pikka

physics
Two satellites are monitored as they orbit the earth,satellites Y is foure times as far from earth's centre as is satellite X. IF the period of revolution of satellite X is T. WHAT IS THE PERIOD OF REVOLUTION OF OF Y?
Saturday, November 14, 2015 by barch

Chemistry
On Earth, naturally occurring calcium metal contains 6 isotopes: Ca-40, Ca-42, Ca-43, Ca-44, Ca-46, Ca-48. Select all of the following that are true for a sample of naturally occurring calcium. A) The average mass of the calcium atoms is 40.078 amu. B)One mole of Ca-40 has a ...
Thursday, November 12, 2015 by Kayte

Physics
The moon is a satellite that orbits the earth at a radius of 3.85 × 108 m. The mass of the earth is 5.98 × 1024 kg. What is the orbital speed of the moon?
Thursday, November 12, 2015 by Hannah

Science
The geologic time scale originally ordered Earth's rocks by: A. absolute age B. relative age*** C. composition D. decades and centuries Where did scientists originally get their information to develop the geologic time scale? A. They collected and studied rock samples in ...
Thursday, November 12, 2015 by Anonymous

Physics
How far above the surface of the earth would you have to be before your weight is reduced by 13.52%?
Thursday, November 12, 2015 by Rebecca

Physics
Find the minimum initial speed of a projectile in order for it to reach a height of 2022 km above the surface of the earth.
Thursday, November 12, 2015 by Rebecca

earth sceince
Which of the following is a true of passive continental margins A. They generally have a deep trench B. They have a continental rise C. Crust is destroyed at their boundary D. They always have a subduction zone
Thursday, November 12, 2015 by samantha

Chemistry
Why are the two words "alkaline" and "earth" used to name the group 2 metals?
Wednesday, November 11, 2015 by Sarah

HELP PLEASE
1. Under which of the following conditions would a fossil most likely form? A. A living thing dies and sediment is very slowly deposited on top of its body. B. A living thing dies and sediment quickly covers its body. C. A living thing dies and its skeleton is left exposed to ...
Wednesday, November 11, 2015 by OHI

physics
If there were no air resistance, with what speed would drops hit the Earth if they fell from a cloud 3881 m above the Earth’s surface? The acceleration of gravity is 10 m/s
Wednesday, November 11, 2015 by Anonymous

Science CHECK ANSWERS! PLEASE HELP!! :(
1. Under which of the following conditions would a fossil most likely form? A. A living thing dies and sediment is very slowly deposited on top of its body. B. A living thing dies and sediment quickly covers its body. C. A living thing dies and its skeleton is left exposed to ...
Wednesday, November 11, 2015 by OHI

chemistry
1. Calcuate the distance(km) from the Earth to the Moon if it takes light 1.3 seconds to make the trip? 2. Saturn is about 1.2 billionkm from Earth. How long does it take light to travel that distance? (I was only given the wave equation, Max Plancks equation, De Broglies ...
Wednesday, November 11, 2015 by Brooke N

SCIENCE CHECK ANSWERS!!! HELP PLEASE
1. Under which of the following conditions would a fossil most likely form? A. A living thing dies and sediment is very slowly deposited on top of its body. B. A living thing dies and sediment quickly covers its body. C. A living thing dies and its skeleton is left exposed to ...
Wednesday, November 11, 2015 by OHI

physics
Goku wants to visit Andromaeda galaxy which is 2 million light years away from earth. If it takes 30 years in the frame of the spaceship to travel to Andromeda from earth, what should be the speed of the spaceship? Assume that the spaceship travels at constant speed
Tuesday, November 10, 2015 by Kitty

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromospheres Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and helium ...
Monday, November 9, 2015 by Shalee^~^

Quick Physics Check
2. Which of the following examples does not show projectile motion? A. a tennis ball bounces across the net B. a ball is thrown at a downward angle toward a target on the ground C. a feather drifts to the ground D. a horseshoe is pitched at a stake Is it C? 3. Which of the ...
Monday, November 9, 2015 by Anonymous

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromospheres Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and helium ...
Monday, November 9, 2015 by Shalee^~^

Science
Cosmos Episode 1 Worksheet Directions: Answer the questions as you watch episode 1 of Cosmos: A Spacetime Odyssey 1. What is the name of Neil deGrasse Tyson’s “spaceship” 2. What is responsible for creating wind and keeping everything in the solar system in its ...
Monday, November 9, 2015 by verna

earth/space
Maribel places her backpack and lunch bag on a lab table where there are lab materials. What is the safest way for Maribel to arrange the items?
Monday, November 9, 2015 by De'asia

ap physics
The acceleration due to gravity on the moon has a magnitude of 1.62 m/s. deal with a placekicker kicking a football. Assume that the ball is kicked on the moon instead of on the earth. Find (a) the maximum height H and (b) the range that the ball would attain on the moon.
Sunday, November 8, 2015 by Anonymous

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and...
Saturday, November 7, 2015 by Lea

Science
Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements about the solar system&#...
Friday, November 6, 2015 by Cami

Space craft
How will you overcome these challenges with the design of your spacecraft? (I decided to choose the inner planet mercury) I put: Mercury is very different than Earth. It’s far rougher than earth; the main problem is the temperature. Humans can’t just live there ...
Thursday, November 5, 2015 by Areana

earth science
briefly explain how earths atmosphere heated? Energy is transferred between the earth's surface and the atmosphere via conduction, convection, and radiation. Conduction is the process by which heat energy is transmitted through contact with neighboring molecules
Thursday, November 5, 2015 by Megan

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*** ...
Thursday, November 5, 2015 by Ana

science
if moon goes away, what would happen to the earth? if you drop a ball 3 meters and it bounds 1/2 seconds, what would happen on the moon?
Wednesday, November 4, 2015 by jan weeks

science
if a ball falls 3 meter and bounds 1/2 seconds on the earth, what would happen on the moon if the same happened?
Wednesday, November 4, 2015 by jan weeks

physics
an object weighs 180N on earth, how much will it weigh on the moon?
Wednesday, November 4, 2015 by ibrahim a zadawa

Physics
A jet aircraft is flying due south at 300 m/s at a place where the earth’s magnetic field is 80 µT. Find the potential difference between the wing tips if they are 25 m apart. Which tip has the higher potential?
Wednesday, November 4, 2015 by Brittany

PHYSICS
Calculate the kinetic energy that the earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total energy used in the United States ...
Tuesday, November 3, 2015 by Anonymous

Art- plzz help
In this image with the trash can, the principles of design 1. Emphasize the message through color and shape 2distract the viewer from the message 3.were created through strong use of texture 4. communicate the message with a large variety of lines. The picture is white in the ...
Tuesday, November 3, 2015 by China one

7th Grade Science About Earth Quakes
Hi, I need some information about Earth Quakes. My question is: Where & Why do Earth Quakes occur? I'm not cheating or anything I just need some help with this topic for the project I'm doing about Earth Quakes right now. Please Help ME! Thanks :D
Tuesday, November 3, 2015 by MusicLover14

Physical Science
An astronaut in a spacesuit has a mass of 100 kilograms. What is the weight of this astronaut on the surface of the Moon where the strength of gravity is approximately 1/6 that of Earth?
Sunday, November 1, 2015 by Chiara

Introduction to CARS Passages
CARS 1: Introduction to CARS Passages Passage I Those who consider the Devil to be a partisan of Evil and angels to be warriors for Good accept the demagogy of the angels. Things are clearly more complicated. Angels are partisans not of Good, but of Divine creation. The Devil...
Sunday, November 1, 2015 by TinA

science
Saturn rotation and revolution compared to earth
Sunday, November 1, 2015 by lee

CARS Passages
CARS 1: Introduction to CARS Passages Passage I Those who consider the Devil to be a partisan of Evil and angels to be warriors for Good accept the demagogy of the angels. Things are clearly more complicated. Angels are partisans not of Good, but of Divine creation. The Devil...
Saturday, October 31, 2015 by Tina

physics
Use Kepler’s laws and the period of the Moon (27.4 d) to determine the period of an artificial satellite orbiting very near the Earth’s surface.
Friday, October 30, 2015 by rani

physics
Calculate the period of a satellite orbiting the Moon, 95 km above the Moon’s surface. Ignore effects of the Earth. The radius of the Moon is 1740 km.
Friday, October 30, 2015 by rani

physics
Calculate the speed of a satellite moving in a stable circular orbit about the Earth at a height of 4800 km.
Friday, October 30, 2015 by rani

physics
Calculate the force of Earth’s gravity on a spacecraft 2.00 Earth radii above the Earth’s surface if its mass is 1850 kg.
Friday, October 30, 2015 by rani

Social Studies Please Check My Answers
Which pair of basic questions guides geographers in their work? (1 point) Where are things located? and Why are they there?* What is the climate? and Why has it changed? When did Earth form? and What is it made of? Who lived where? and When did they move? 2. To learn more ...
Thursday, October 29, 2015 by Sam

physics
the earth is,on average,150 million km from the sun.calculate its average speed in orbit.
Thursday, October 29, 2015 by dave getch

Astronomy
Why is the greenhouse effect on Earth not as drastic as on Venus? -There is no carbon dioxide in Earth’s atmosphere. -The oceans dissolved much of the carbon dioxide. -Earth is smaller than Venus so it can’t hold the gases in the atmosphere. -There is more carbon ...
Wednesday, October 28, 2015 by Sandra

Earth Science
How to draw 40 degrees north and 70 degrees south with latitude and longitude. plez tell me how to draw it because im studying for a test and they tell me the questions I just need to know how to DRAW IT NOT WEBSITES BUT ITS STILL OK
Wednesday, October 28, 2015 by Ameen from school I.S.187

Earth Science
How to draw 40 degrees north and 70 degrees south with latitude and longitude
Wednesday, October 28, 2015 by Ameen from school I.S.187

Language Arts
Decide whether each list of nouns is common or proper. Add another example to each list. Write P if the list shows proper nouns. Write C if the list shows common nouns. 1. Nebraska, Colorado, Utah-p Example: New York 2. spikes,wood ties, sledgehammers-c Example: axes 3. Dr. ...
Wednesday, October 28, 2015 by Patrick

Science
which of the following features make earth and venus similar to each other ? (1point ) A . their size and mass b. their rates of rotation c. their atmospheres d. their directions of rotation****
Wednesday, October 28, 2015 by Cami

Astronomy
Why is the greenhouse effect on Earth not as drastic as on Venus? There is no carbon dioxide in Earth’s atmosphere. The oceans dissolved much of the carbon dioxide. Earth is smaller than Venus so it can’t hold the gases in the atmosphere. There is more carbon dioxide...
Tuesday, October 27, 2015 by Sandra

Science
What is the lowest atmosphere on earth?
Tuesday, October 27, 2015 by Chuang

maths 3 advanced
an experimental satelite is placed into a polar ellipical orbit above the earth. both its apogee and perigee are above the equator and the earths centre is the focus of the ellipical orbit. the earths radius is taken ar 6000km. the furthest point of the satellites orbit is ...
Tuesday, October 27, 2015 by max

Is this right Ms Sue ???
through their study on earth, geographers learn how earth and its people affect ? human health the solar system each other political systems***
Monday, October 26, 2015 by lilly

please check my answer!!!
through their study on earth, geographers learn how earth and its people affect ? human health the solar system *** each other political systems
Monday, October 26, 2015 by lilly

geography..please check my answers!!!
which pair of basic questions guides geographers in their work? where are things located? and Why are they there? **** What is the climate? and Why was it changed? When did Earth form? and What is it made of? Who lived where? and When did they move?
Monday, October 26, 2015 by lilly

English
Choose the answer that best matches the word "millennia" For many millennia, people believed Earth was flat. reasons thousands of years*** generations of people beliefs or propositions *** - My Answer
Monday, October 26, 2015 by Kaai97

physics
how much energy is required to move a 1000kg object from the Earth's surface to an altitude twice Earth's radius?
Monday, October 26, 2015 by ling

Chemistry
the distance from the sun to earth is 1.496 x10 ^8 km. how long does it take light to travel from the sun to earth How do you solve this?
Sunday, October 25, 2015 by Mark

astronomy
The Keck telescope on Mauna Kea has an angular resolution on Earth of half an arcsecond. How far away (in meters) could you read ("resolve the letters of") a book with 3 mm square type, using the Keck telescope on Earth?
Sunday, October 25, 2015 by Titos

physics
a solar panel is 12% efficient at converting sunlight into electrical energy.on average the sunlight that strikes the earth's surface has an intensity of 250 w/m^2 which of the following is the best estimate for the area of the solar panel needed to provide 1.2Kw of energy...
Sunday, October 25, 2015 by iffat

astronomy
The luminosity of the Sun is 4*10^33 erg/s, and its radius is 7*10^10 cm. What is the flux of sunlight on the Earth? i answer flux = luminosity/4pi*d^2 = 4*10^33/4pi*49*10^20=.....0,0064994151*1​0^13=6.49*10^10 erg/cm^2/sec thank you .please help me...
Saturday, October 24, 2015 by Tsambikos

astronomy
A geosynchronous satellite is a satellite whose orbital period matches the rotation of the Earth. Calculate the height above the surface of the Earth which a satellite must have in order to be in a geosynchronous orbit. (Please enter your answer in units of kilometers)
Saturday, October 24, 2015 by Tsambikos

Science
Explain why Earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA)What was this particular time period called? Why is this time period not really considered a part of Earth’s geologic ...
Friday, October 23, 2015 by Alexia Smith

Science
I am having trouble with this one question. Please help? (: Explain why Earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA)
Friday, October 23, 2015 by Alexia Smith

AP WORLD HISTORY TEST TODAY!!!
Man is believed to have migrated from what region of the earth? A. southeast Asia B. Iberian Peninsula C. Fertile crescent D. Indo-Europe E. Mediterranean Basin I NEED A FAST RESPONSE!! THANK YOU
Friday, October 23, 2015 by Anonymous

DMMS
Chemistry What characteristics are shared by all alkali metals and alkaline earth metals? A They conduct electricity very well B They are strong and shiny C They form alkaline solutions when mixed with water D They do not react with water at all
Thursday, October 22, 2015 by Donna

Science
Which of Earth sprees contain most of the mass?
Thursday, October 22, 2015 by Mark

Science please help :)?
3. which if the following factors determines how long a star will live ? ( 1point ) A . star’s color b. the star’s mass**** c. the star’s diameter d. the star’s distance from the sun 4 . which of the following causes constellations to appear to move ...
Wednesday, October 21, 2015 by Cami

Math2
The scale of a globe is 1/8 inch= 125 miles. How many inches is the circumference of that globe? Hint 1: Circumference means distance around. Hint 2: Use 25,000 miles for the circumference of the Earth.
Wednesday, October 21, 2015 by DK

astronomy
The orbit of the comet Encke has a perihelion distance of 0.331 AU and an eccentricity of 0.850. Suppose that the arrival of the comet at its perihelion distance happens to occur at a point directly in line between the Sun and the Earth. Roughly how many years will it be ...
Wednesday, October 21, 2015 by ev

Trig
mercury rotates around the sun in approx. 89 earth days (or 7,689,600 s. use a calculator to approximate its angular speed. choices: 4.09x10^-7 0.035 0.071 8.17x10^-7
Wednesday, October 21, 2015 by Bill

Earth Science
Which of the following is not a process that forms metallic ore? placer deposits *** fossil compaction hydrothermal solutions igneous processes 5. Which of the following nonmetallic mineral resources is used both as a building material and as an industrial mineral? sulfur ...
Wednesday, October 21, 2015 by Anon

SS HELP PLZ
1)Which of the following does NOT concern dividing up the earth into smaller sections? A. Parallels B. Meridian C. Cardinal Directions**** D. Hemispheres 2)Which of the five themes includes human and physical features at a specific location? A. Locations B. Place**** C. ...
Tuesday, October 20, 2015 by regan

Analytical Mechanics
a gun is fired with muzzle velocity v0 = 1000 m/s straight up along the z-axis. While moving through the air the Earth's gravity pulls on the bullet, which has mass m = 20 grams and the bullet's air resistance force can be approximated by the relationship Fresist = -cv...
Tuesday, October 20, 2015 by Ryan

Physics 101 (I'm stupid)!
And Astronaut wearing an environment suit has a total mass of 130 kg. What is his weight on earth? What would his weight be on Mars where the acceleration of gravity is 3.26? What is his mass on Mars? Why? If he should end up adrift and deep space what what his mask be? Why?
Tuesday, October 20, 2015 by Haley

Physics 101 (I'm stupid)!
And Astronaut wearing an environment suit has a total mass of 130 kg. What is his weight on earth? What would his weight be on Mars where the acceleration of gravity is 3.26? What is his mass on Mars? Why? If he should end up adrift and deep space what what his mask be? Why?
Monday, October 19, 2015 by Haley

astronomy
A geosynchronous satellite is a satellite whose orbital period matches the rotation of the Earth. Calculate the height above the surface of the Earth which a satellite must have in order to be in a geosynchronous orbit. (Please enter your answer in units of kilometers)
Sunday, October 18, 2015 by Anonymous

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Homework Help: Science