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Homework Help: Science: Earth

Recent Homework Questions About Earth

science help pls pls
A star is observed from two positions of Earth in its orbit, in summer and winter. Which of these is the best method to calculate the approximate distance of the star from Earth? measure the parallax and use it in calculations measure the red shift of emitted light and use it ...

Geometry Honors
On the bridge of a ship at sea, the captain asked the new, young officer standing next to him to determine the distance to the horizon. The officer took pencil and paper, and in a few moments came up with an answer. On the paper he had written the formula d = 3.6 square root h...

science
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...

physics
Suppose that 7.40 g of hydrogen is separated into electrons and protons. Suppose also that the protons are placed at the Earth's north pole and the electrons are placed at the south pole. What is the resulting compressional force on the Earth?

Mathematics
1. Which of the following is the correct definition of minerals? (1 point) a naturally occurring, inorganic solid that has a crystal shape and a definite chemical composition a naturally occurring, inorganic solid that forms through crystallization of melted materials•• a ...

HEALTH PLZ HELP MEEEEEEEEEEEE ASAPPPPPPPP
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...

Health Plz help THX!!
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...

PHYSICS HELP!!
(a) Suppose 10 astronauts are sent to Mars and then back to Earth. The average power usage of each astronaut is 10,000,000 joules per day. What is the average power usage of each astronaut in watts and horsepower? (b) It will take approximately 2 years for the astronauts to ...

Math HELP PLEASE QUICK!
A radio signal travels at 3 x 10^8 meters per second. How many seconds will it take for a radio signal to travel from a satellite to the surface of Earth if the satellite is orbiting at a height of 3.54 x 10^7?

PHYSICS!!
(a) Suppose 10 astronauts are sent to Mars and then back to Earth. The average power usage of each astronaut is 10,000,000 joules per day. What is the average power usage of each astronaut in watts and horsepower? (b) It will take approximately 2 years for the astronauts to ...

Energy of satellite PHYSICS
An m = 43 kg mass instrument package is put into orbit at an altitude above the Earth of A = 23000 km. What is the kinetic energy of this satellite in Joules?

Science
Two pellets, each with a charge of 1.5 microcoulomb (1.5×10−6 C ), are located 2.8 cm (2.8×10−2 m ) apart. Part A Find the electric force between them.Part B What would be the mass of an object that would experience this same force in Earth's gravitational field...

Physics
1 m pendlum on Earth has a period of 2 s. What would it's period be on the moon where the acceleration due to gravity is 1.63 m/s2 ?

science
according to wegeners hypothesis of continental drift ? A. Earths surface B. The continents C. Earth is slowly cooling and shrinking D. The continents joined

physics
A certain pendulum on Earth has a period of 1.6 s. What would be the period of this pendulum if it were taken to another planet that had 1.75 times the mass of the Earth and 2.5 times the Earth's radius? Express your answer in seconds to three significant digits.

english
4. Shenzhen is a shoking place, like nowhere elseon earth that i have ever seen. (make a question with sentence " i have ever seen") 5. The new Hopewell Highway runs from Shenzhen to Guangzhou. (make a question with " where question") 6. So the traffic will be like in Bangkok...

english
Please make a question 1. In 1982 it was a fishing village with two main roads, fields, and a population of 3 million. It is growing at an incredible speed (make a question with sentence "it is growing at an incredible speed ") 2. China is changing. It is no longer a country ...

Science
Why do scientists study images made with parts of the electromagnetic spectrum other than visible light? A)These images are the only way to observe galaxies beyond our own. B)These images reveal information that visible light does not show. C)These images show important data ...

Science
Karen is studying types of spacecraft. Which of these spacecraft can people use to travel to and from orbits close to Earth? A)space probe B)space shuttle C)space station D)space telescope I think the answer is C.

maths help!
find the mass of the earth assuming the radius is 6400km

Comm Tech
1.)An eco-friendly home-building company has asked you to create their logo. Which of the following color schemes would work best to enhance the perception that their company is Earth-friendly? (1 point) A.)Green & Brown B.)Red & Yellow C.)Red & Blue D.)Pink & Yellow

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, ...

science
space craft is heading towards the sun which is located 150,000,000 km. away from earth at a speed of 17,000 km, per hour. what is the approximately to the nearest year how long will it take to arrive at the sun's surface? show work

Astronomy
You see a galaxy which lies at distance D from the earth. You measure a flux from this galaxy of f. If you assume a mass-to-light ratio of r (i.e. r is the number of kilograms needed to generate one watt of radiation), derive an equation for the stellar mass m of the galaxy.

College Physics
If a certain amount of ideal gas occupies a volume 9.5 m3 with a pressure of 3.1 atm and temperature 5.4 oC on earth, what would be its volume on another planet, where the temperature is 5.3oC and the pressure is 7.4 atm ? The answer is in unit of m3

physics
A satellite of mass 2500kg is orbiting the Earth in an elliptical orbit.At the farthest point from the Earth,its altitude is 3600km,while at the nearest point,it is 1100km.calculate the energy and angular momentm of the satellite and its speed at the aphelion and perihelion.

physics
A satellite of mass 2500kg is orbiting the Earth in an elliptical orbit.At the farthest point from the Earth,its altitude is 3600km,while at the nearest point,it is 1100km.calculate the energy and angular momentm of the satellite and its speed at the aphelion and perihelion.

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, and why is this period not considered a part of Earth's geological history?

physics
A pendulum has a period of 0.90 s on Earth. What is its period on a planet where the acceleration of gravity is about 0.29 that on Earth?

science
a person roller skates down a street heading east which of the following would be true abot friction in this scenario? ----------------------------------- 1.A. friction does not affect the skates in this scenario 2.B. friction pulls the skates wheels eastward 3.C. friction ...

physics
A horizontal, straight wire carrying 12 A current from east to west is in the earth's magnetic field B. At this place, B is parallel to the surface of the earth, points north and its magnitude is 0.04mT. Determine the Magnetic Force on 1 m length of wire. If mass of this ...

science help
Two factors which cause global climate change are listed below. Factor 1: Volcanic eruptions. Factor 2: Changes in the amount of Sun’s heat received by the Earth’s atmosphere and surface. Which of these statements is correct about the two factors which cause global climate...

science help please
1. Which of the following best describes the movement of an object at rest if no outside forces act on it? (1 point) It will move due to inertia. Gravity will eventually cause it to move. It will stay at rest due to inertia. It will stay at rest due to gravity. 2. A 2,500 kg ...

English Q's 1-5
Read the following passage. Then answer questions 1-5 on the online portion of the Unit Assessment. From The Lost Prince By Frances Hodgson Burnett There are many dreary and dingy rows of ugly houses in certain parts of London, but there certainly could not be any row more ...

astronomy
On Earth, an astronaut weighs about 600 Newtons. The mass of the Earth is about 6 x 1024 kg, and the radius of the Earth is about 6.4 x 106 m. Suppose the astronaut climbs a ladder to a height of one Earth radius above the Earth. What is the new weight of the astronaut? please...

reading
(1) Scientists generally agree that Earth is getting warmer due to what's called the greenhouse effect. (2) A greenhouse stays warm because sunlight and heat coming through the glass roof are mostly trapped. (3) The heat doesn't radiate back into the atmosphere because it's ...

Science
Please Check! 1. How does nanotechnology help engineers make products for the future? a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.*** b. By changing a material's atomic structure, its physical properties can also be ...

Science Please Check
Please Check 1. How does nanotechnology help engineers make products for the future? a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.*** b. By changing a material's atomic structure, its physical properties can also be ...

physics
At what altitude above Earth's surface would the gravitational acceleration be 1.20 m/s2? (Take the Earth's radius as 6370 km.)

Science
How does sea-floor spreading occur? A, New materials are being added to the asthenosphere. B, Earthquakes break apart the ocean floor. C, Sediments accumulate at the area of spreading. D, Molten material beneath Earth's crust rises to the surface. •• 2, Which features form...

Science
ing to Wegener's hypothesis of continental drift,? A.Earth's surface is made up of seven major landmasses. B.the continents do not move. C.Earth is slowly cooling and shrinking. D.the continents were once joined together in a single landmass.•• Correct me plz

Earth Science (check answers)
Describe the importance of maintaining the ocean ecosystem. It is important to maintain because the ocean ecosystems because it provides reefs that support a complex ecosystem of ocean organisms that live and help each other to survive. Virtually every phyla on Earth is ...

Physics - Repost because of no response
In an experiment on the shuttle, an electron with a speed of 6.3 x 105 m/s [N] and a mass of 9.11 x 10-31 kg is shot through an external magnetic field. Determine the strength and orientation of the magnetic field required so that the electron's direction of travel remains ...

Reading
Of all the gods and goddesses of Olympus, perhaps none was loved by humans as much as Demeter. Demeter was the goddess of the soil and of the crops, to which she tended with great care all through the year. Demeter enjoyed her duties because she cared for mortals and wanted to...

Reading
Of all the gods and goddesses of Olympus, perhaps none was loved by humans as much as Demeter. Demeter was the goddess of the soil and of the crops, to which she tended with great care all through the year. Demeter enjoyed her duties because she cared for mortals and wanted to...

Reading
Of all the gods and goddesses of Olympus, perhaps none was loved by humans as much as Demeter. Demeter was the goddess of the soil and of the crops, to which she tended with great care all through the year. Demeter enjoyed her duties because she cared for mortals and wanted to...

Physics - Repost because of no response
In an experiment on the shuttle, an electron with a speed of 6.3 x 105 m/s [N] and a mass of 9.11 x 10-31 kg is shot through an external magnetic field. Determine the strength and orientation of the magnetic field required so that the electron's direction of travel remains ...

Reading
Of all the gods and goddesses of Olympus, perhaps none was loved by humans as much as Demeter. Demeter was the goddess of the soil and of the crops, to which she tended with great care all through the year. Demeter enjoyed her duties because she cared for mortals and wanted to...

Science
1. Which of the following best describes the movement of an object at rest if no outside forces act on it? (1 point) It will move due to inertia. Gravity will eventually cause it to move. It will stay at rest due to inertia. It will stay at rest due to gravity. Physics 2. A 2,...

Reading
Of all the gods and goddesses of Olympus, perhaps none was loved by humans as much as Demeter. Demeter was the goddess of the soil and of the crops, to which she tended with great care all through the year. Demeter enjoyed her duties because she cared for mortals and wanted to...

Physics Magnetic Field
In an experiment on the shuttle, an electron with a speed of 6.3 x 105 m/s [N] and a mass of 9.11 x 10-31 kg is shot through an external magnetic field. Determine the strength and orientation of the magnetic field required so that the electron's direction of travel remains ...

math
a well of diameter 3 m is dug 14 m deep . the earth taken out of it has beem spread evenly all around of it in the shape of circular ring of width 4 m to form embankment. find the height of embankment .

science
1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 ...

Physics
What is the potential energy of the Earth, considered as an object orbiting the Sun? Compare your result with the kinetic energy of the Earth in its orbit. Given Earth mass = 6.34×1024kg , Sun mass =1.934×1030kg, and distance from the Earth to the Sun =1.434×108km.

Science
1. Which of the following about the suns structure is true? A.The sun has a solid surface. B. The sun has an interior and an atmosphere. * C.The sun's is similar to Earth's; it has a core, mantle, and crust. D. The sun's outermost layer is called the radiation zone.

Earth science
Where on the ocean floor will you find the greatest amount of living organisms? Answer: the coral reefs

science
How are Earth and Venus similar ? How are they different? give 2 similarities and 2 difference thanks

Physics
Kim(55 kg) has been wondering about the normal force. (a) How many helium balloons would it take to reduce her normal force by 50% if helium has a lifting force of 1.0 gram per liter. She estimates that a balloon contains about 5.0 liters of helium. (b) How many helium ...

Physics
What is the potential energy of the Earth, considered as an object orbiting the Sun? Compare your result with the kinetic energy of the Earth in its orbit. Given Earth mass = 6.34×1024kg , Sun mass =1.934×1030kg, and distance from the Earth to the Sun =1.434×108km.

Math (geometry)
Earth's diameter at the equator is about 7926 miles. A jet flies 550 miles per hour. How long would it take the jet to fly halfway around the equator?

AP Physics
At their closest approach, Venus and Earth are 4.2x10^10m apart. The mass of Venus is 4.87x10^24kg, the mass of Earth is 5.97x10^24kg, and G=6.67x10^-11Nm2/kg2. What is the force exerted by Venus on Earth at that point?

Health
Which profession should a person who suffers from chronic asthma probably stay away from? A. Criminal attorney <<<<< B. Earth science teacher C. Grocery store manager D. veterinarian.

ELA
WHAT TYPE OF WRITING IS THIS (pick on of these:cause&effect,compare&contrast,sequ​ence,chronological order,problem&solution,descriptive) Volcanoes are a feared and destructive force for good reason. A volcano is like a pressure valve for the inner earth, but they can ...

english help please!!
Read the following excerpt from H.G. Wells' The War of the Worlds, and answer the question that follows: The planet Mars, I scarcely need remind the reader, revolves about the sun at a mean distance of 140,000,000 miles, and the light and heat it receives from the sun is ...

chemistry
at certain altitude in the upper atmosphere, the temperature is estimated to be -100 degree celsius and the density just 10^-9 that of the earth's atmosphere at STP. Assuming a uniform atmosphere at STP. Assuming a uniform atmospheric composition, what is the pressure, in ...

English-poem help
Is the poem I wrote a sonnet? My aunt has cancer, i don't know how, i sit and wonder why. I get mad at God and often say i hate him. I know its not his fault, but who am i supposed to blame, its all just bad shame. I walk to see her on her bed, in pain, holding on to her cane...

Math
Sunitha is interested to find the Relation between the diameters of Jupiter and the earth.From the given data,it is known that the volume of Jupiter is 729 times the volume of earth.she concluded that the diameter of Jupiter is 9 times the diameter of the earth.prove this.

Physics
A woman with mass of 57 kg stands at the rim of a horizontal table having a moment of inertia of 570 kg m2 and a radius of 1.5 m.The turntable is initially at rest and is free to rotate about a frictionless, vertical axis through its center. The woman then starts walking ...

physics
At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.20%? At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 2.0%? At what height above Earth's surface is the ...

Math
There was a berry picking contest at the earth day celebration this year. The line plot below shows the number of pints of berries collected by the people participating in the contest. a. What is the median of the data displaced on the line plot? b. How many people ...

physics
At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.20%? At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 2.0%? At what height above Earth's surface is the ...

Science
Hi. Could you Please check my answers? I just want to make sure they are correct. Thanks for the help in advance :). True or false: All matter on Earth contains energy- true? True or false: the molecules in frozen water are in motion- true? True or false: ice is too cold to ...

Language
Miracles Walt Whitman, 1819 - 1892 Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of ...

Physics
Many people mistakenly believe that the astronauts that orbit the Earth are "above gravity". Calculate g for space-shuttle territory, 206 kilometers above the Earth's surface. Earth's mass is 6e24 kg, and its radius is 6.38e6 m (6380 km). Your answer is what percentage of 9.8 ...

physics
At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.20%? At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 2.0%? At what height above Earth's surface is the ...

physics
Assumed that north is the y-direction and east the x-direction. You are piloting the boat that moves at a constant speed of 10 km/hr relative to the water beneath it. 1) On a body of still water, you point your boat due north for 2hr, then turn due east and continue for ...

Algebra ASAP!
Radio signals travel at a rate of 3 x 10^8 meters per second. How many seconds will it take for a radio signal to travel from a satellite to the surface of the Earth if the satellite is orbiting at a height of 9.6 x 10^6. Can someone show me how to do this so that I can not ...

Tech
An eco-friendly home-building company has asked you to create their logo. Which of the following color schemes would work best to enhance the perception that their company is Earth-friendly? (1 point) Correct answer (1 pt) green and brown Unselected answer (0 pts) red and ...

maths
A satellite travels around the earth in a circulsr orbit 700 kilometres above the earth's surface. Find the radius of the satellite's orbit if the radius of the earth is 6400 kilometres. Also find the distance traveled by the satellite in one orbit of da earth. Express answer ...

Language Art's
"President Lincoln’s Declaration of Emancipation, January 1, 1863" by Frances E. W. Harper 1 It shall flash through coming ages, 2 It shall light the distant years; 3 And eyes now dim with sorrow 4 Shall be brighter through their tears. 5 It shall flush the mountain ranges, ...

Maths
Assuming the earth to be a sphere of radius 6370 km.If seventy five percent of the earth's surface is covered by water, then find how many square kilometres is area of the land.

physics
A 910kg object is released from rest at an altitude of 1200 km above the north pole of the earth. If we ignore atmospheric friction, with what speed does the object strike the surface of the earth?

Physics
A 910kg object is released from rest at an altitude of 1200 km above the north pole of the earth. If we ignore atmospheric friction, with what speed does the object strike the surface of the earth? (the polar radius of the earth is 6357 km)

science
How can we measure the Gravitational field intensity of any place on earth ?

MATH
The moon's distance from the earth is 360000 km and its diameter subtends an angle of 31 minute at the of the observer on the earth . Find the radius of the moon.

Science
Does the tilt of the earth cause one hemisphere to be closer to the sun? True or false False.

Weight Is Force! Science
A space ship has a mass of 9000kg. the space ship is launched from Earth and lands on a distant planet where it has a mass of 390000 N. What is the acceleration of the gravity on this planet?

Weight Is Force! Science
A space ship has a mass of 9000kg. The spaceship is launched from the Earth and lands on a distant planet where it has a weighted of 39000 N. What is the acceleration of gravity on this planet?

science help pls pls
A student designed an experiment to demonstrate the interaction between Earth systems. The steps of the experiment are given below. *Take a pot full of dry soil. *Keep the pot in direct sunlight. *Do not water the soil for a week. *Observe cracks in the soil after a week. The ...

Astronomy
Newton’s version of Kepler’s third law is P^2 = 4pi^2/(G(M_1+M_2)) a^3. Since the square of the period P varies inversely with the sum of the masses (M_1 + M_2), the period itself depends on the inverse square root of the object masses. If a solar system has a star that is...

science
if the mass of the earth is 598*10 to the power of 22km and the mass moon is 7.36*10 to the power of 22kg. calculate the difference in their masses, what is the answer in scientific notation

Algebra
Radio signals travel at a rate of 3*10^8 meters per second. How many seconds would it take for a radio signal to travel from a satellite to the surface of Earth if the satellite is orbiting at a height of 4.2*10^7 meters? (Hint: Time is distance divided by speed.) a. 1.26*10^...

Algebra
Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88 × 10*12 miles. Suppose a star is 9.8 × 10^1 light-years from Earth. In scientific notation, approximately how many miles is it? A. 5.88...

Science
Tomorrow I have the midterm (Lab-Earth Science) on 1 Minerals Igneous Rocks Sedimentary Rocks 2 Topographic Maps 3 Geologic Time Help with this, please.

Language
Miracles Walt Whitman, 1819 - 1892 Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of the...

Geography and Society
What is the primary function of Earth's atmosphere? a. to trap heat from the sun b. to shield the planet from harmful radiation*** c. to disintegrate space debris before it reaches the surface d. all of the above

Language
more facebook twitter tumblr embed poem add to anthology print Miracles Walt Whitman, 1819 - 1892 Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, ...

Earth Science
How does altitude affect climate (beyond just temperature)?

Language
more facebook twitter tumblr embed poem add to anthology print Miracles Walt Whitman, 1819 - 1892 Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky...

physics
An artificial Earth satellite, of mass 3.00 × 10^3 kg, has an elliptical orbit, with a mean altitude of 500 km. (a) What is its mean value of gravitational potential energy while in orbit? (b) What is its mean value of orbital kinetic energy? (c) What is its total energy ...

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Homework Help: Science

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