Why must the centre of the satellite orbit coincide with the centre of the Earth?

24,970 results, page 32

math

Aaron own a shipping company. He plans to move into his new office which is near to the city centre. He needs some filing cabinets to organize his files. Cabinet x which costs RM100 per unit, requires 0.6 square meters of the floor space and can hold 0.8 cubic meters of files...

math

Aaron own a shipping company. He plans to move into his new office which is near to the city centre. He needs some filing cabinets to organize his files. Cabinet x which costs RM100 per unit, requires 0.6 square meters of the floor space and can hold 0.8 cubic meters of files...

physics

A projected space station consists of a circular tube that will rotate about its center (like a tubular bicycle tire) as shown in the figure . The circle formed by the tube has a diameter of about 1.1 km. What must be the rotation speed (revolutions per day) if an effect equal...

English

I forgot to include the following sentences. Thank you very much 1) My family and I drove from Turin to Pisa. We didn't have an exciting road trip, because we mainly dorve through boring highways. 2) We spent our time having conversations about scool and relatives. We always ...

science

The thermal energy of volcanoes and natural hot springs comes from trace amounts of radioactive minerals in common rock in the Earth's interior. Why isn't the same kind of rock at the Earth's surface warm to the touch?

Physics

An object of mass 3.5x1023kg circles the earth and is attracted to it with a force whose magnitude is given be GMeM/r^2. If the period of rotation is 22 days, what is the distance from the earth to the object? Here G=6.67x10-11 Nm2/kg2, Me=6x1024 kg.

physics

How is the angle of inclination of the sun measured on the vernal or autumnal equinox at noon related to the latitude of our location here on earth. Use a picture that includes the earth and the sun in your explanation. I'm completly lost

6th earth science

Can anyone help with this question If Earth's land features made by process of moving water are likely to be found on other celestial objects? I am trying to help my son but not sure I am understanding the question right myself.

science

the phenomena of parallelism of axis? a- results in the production of day and night b- causes different hemispheres of the earth to tilt toward the sun c- determines the angle at which the sun's rays will strike the earth d- all of the above

Physics

An asteroid with mass m = 1.85*10^9 kg comes from deep space, effectively from infinity, and falls toward Earth. How much work would have to be done on the asteroid by friction to slow it to 550 m/s by the time it reached a distance of 1.50*10^8 m from Earth?

Math Ms. Sue please help!!!

Okay I am really stuck on this question Tip: ^ = exponent Example: 6x10^7 7 is exponent Question: Venus is the second planet from the sun. Earth is the third planet from the sun. The distance from Venus to the sun is 6.72x10^7 and the distance from Earth to the sun is 9.3x10^7...

physics

Earthquakes are motions of the earth's crust. Essentially, they are big sound waves that travel through the earth. There are two types of waves. The first type is called a longitudinal or P wave, where the earth compresses in the same direction as the wave travels. The second ...

math

The basement of a new home will have the following dimensions 30 feet long 24 feet wide and 9 feet deep If the earth is hauled away in loads of 3 cubic yards each, how many loads must be hauled away?

Physics

Engineers are trying to create artificial "gravity" in a ringshaped space station by spinning it like a centrifuge. The ring is 170 m in radius. How quickly must the space station turn in order to give the astronauts inside it apparent weights equal to their real weights at ...

physics

Engineers are trying to create artificial "gravity" in a ringshaped space station by spinning it like a centrifuge. The ring is 120 m in radius. How quickly must the space station turn in order to give the astronauts inside it apparent weights equal to their real weights at ...

7th grade science

1) a classmate states that igneous rock must always become sedimentary rock next, according to the rock cycle. explain why this statement is incorrect. 2)why would granite have larger crystals than igneous rock s formed when lava cooled above the earth's surface?

Biology

The water cycle is best described by which of the following statements? Water in the atmosphere must be converted to another chemical before animals can use it. The water on earth changes forms as it moves from one reservoir to another.>----- My answer As water moves ...

Ms.Sue August or Anonymous

All 3 of you I see usually answer a lot of questions. Can you help me with some of these? 1. Erosion is a slow process that causes change to Earth's surface. All of the following are sources of erosion except A.wind B.earthquakes C.glaciers D.ocean waves In which of these ways...

Physics

Suppose that the ratio of the Moon's mass to the Earth's mass is given by 1.200E-2 and that the ratio of the Moon's radius to the Earth's radius is given by 2.700E-1. Calculate the ratio of an astronaut's Moon-weight to Earth-weight. Now it seems like this problem really ...

geography

Case study 1 Country:Japan, Date:17th Jan 1995, Area:Kobe, Type of settlement:City, Tectonic plates involved: Pacific plate and Eurasian plate, Richter Scale magnitude:7.3, Duration of earthquake:20 seconds, Estimate death toll:6500. Case study 2 Country:Indian, Date:1st Sept ...

Physics

7. An early objection to the idea that the earth is spinning on its axis was that the earth would turn so fast at the equator that people would be thrown into space. Show the error in this logic by calculating the centripetal force needed to hold a 100. kg person in place at ...

physics

What's the speed of the Hubble telescope when it is in orbit 598 km above the earths surface?

physics

What's the speed of the Hubble telescope when it is in orbit 598 km above the earths surface?

Physics

What is the wavelength of light that can cause a transition of an electron in the hydrogen atom from the orbit with n = 6 to n = 8?(answer in µm)

math

John has traveled from a distant planet to spend one earth year visiting with us. However, one year on earth is not the same as one year on john's planet. on john's planet: 10 seconds = 1 minute 10 minutes = 1 hour 10 hours = 1 day 10 days = 1 week 10 weeks = 1 month 10 months...

French #2

Can someone please check my work? Last Saturday different people did different things. Explain what each one did by completing the sentences with the appropriate "passé composé" forms of the verbs in the list. Be logical. acheter assister ranger laver nettoyer rencontrer ...

Astronomy

1.If you mande a model of the solar system with the Earth. The size of a tennis ball [about 6.5c.m in diameter] How big would your model of the sun be? 2.How far away from the tennis ball Earth would your model Sum be.If you kept the size and distance to scale? Since the Sun's...

Third Side, Reply to Jen

Hi Jen, I've seen the drawing. My site is down at the moment. Draw a line from Venus (either of the two positions) to the line Earth-Sun at right angles. Let's call the distance Earth Venus d. Then you have a right angle triangle with a hypotenuse d, the line that intersects ...

physics

In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotational motion is faster than ...

physics

In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotational motion is faster than ...

Geography.../what does this mean?

" The earth's physical landscape is the result of conflict between forces..." Explain what this means. Thanks. Is it possible that forces move Earth around, sometimes the movement is opposing another landforce, they collide, and one slide under?

earth science

how can the interactions between the earth systems affect the climate?? any one help me i don't knw where to start and i need to write 700 words on it Step one is to read your S103 course materials rather than try to get someone else to answer it for you.

Science

1> What 2 types of electromagnetic energy have wavelengths of 0.76 cm? 2> What is the pressure at a depth of 3000 km inside the Earth? 3> How many inches of mercury are equivalent to 974.5 millibars of air pressure? 4> Jupiter's period of revolution is how many ...

AP Physics (circular motion)

The moon revolves about the Earth in a trajectory that is very nearly a circle of radius r = 384,401 km, and requires 27.3 days (23.4 x 10^5 seconds) to make a complete revolution. What is the acceleration of the moon toward the Earth?

Ag Bio 1

In general, greater biodiversity exists closer to Earth's equator than in areas closer to Earth's poles. What does this mean in terms of the number of species that are found in these regions? Please help, they might as well have been speaking Japanese D:

Dennis

How many ways can the letters of the word HAPPINESS be arranged. If H must start the word, N must end the word and the P's must be separated? [question from the topic FACTORIAL,PERMUTATION AND COMBINATION ]

Socials

John. A Macdonald for Confederation... For 20 long years, I have been dragging myself through the dreary waste of Colonial politics. I thought there was no end, nothing worthy of ambition; but now I see something which is well worthy of all I have suffered in the cause of my ...

Physics

A 2.1kg brass ball is transported to the Moon. a)What is the mass of the brass ball on the earth and on the moon? Wouldn't it be 2.1kg for the earth as well as for the moon? b)Determing the weight of thee brass ball on the earth. F_g=(G*m_ball*m_earth)/r^2 =20.58N c) the ...

Science-Damon

Describe how the movement of Earth is responsible for day and night. The movement of earth is responsible for day and night because as it rotates counterclockwise we tend to have this result. The part of earth that faces the sun experiences daylight, and the part that faces ...

physics

The earth exerts a downward force of 850 N on a veteran astronaut as he works outside the space shuttle. What force (if any) does the astronaut exert on the earth?

Physics

The strength of gravity on Mars is only 40% of that on earth. If a child has a mass of 30 kg on earth, what would the child's weight be on Mars? . I came up with 120N is this right?

physics

I will be thank full to u if u help me in solving the below problem If the change in the value of g at a height h above the surface of the earth is same as depth x below the surface of the earth, then (h<<R)

physics

calculate the force of gravity between earth (mass = 6.0 x 1024kg) and the moon (mass = 7.4 x 1022 kg). the average Earth-moon distance is 3.8 x 108 m.

physis

A man weighs 750 N on the surface of the earth. What would be his weight when standing on the moon? The masses of the earth and the moon are respectively, 5 98 0 kg and 7 36 0 kg. Their radii are respectively 6 37 0 km and 1 74 0 km

math

The ratio of an object's weight on Earth to its weight on Neptune is 5 : 7. How much would a person who weighs 150 pounds on Earth weigh on Neptune?

physics

The earth attracts a large flying bug toward its center with a force of 0.10 Newtons. With what force does the bug attract the earth itself?

physics

Calculate the force of gravity between Earth (mass = 6.0 * 1024 kg ) and the moon (mass = 7.4 * 1022 kg) the average earth-moon distance is 3.8 * x10^8 m

Physics (Feilds)

Show that the gravitational potential at the surface of the Earth is -64 MJ kg-1, given the surface gravitational feild strength is 9.8 N kg-1 and the mean radius of the Earth is 6400 km.

Science

If the earth exerts a 500 N gravitational force on an object in near space, how much force does this object exert on the earth, and by what law can this be asserted?

Physics

PROJECTILE LAUNCHED FROM EARTH'S SURFACE? A projectile is shot straight up from the earth's surface at a speed of 1.20×10^4km/hr. How high does it go? (answer in km) Supposed to solve this using F=G(mm/2r)...?

math

earth diameter is 13000 kilometers, globe diameter of0.5 meter, what is the globes scale as a ratio. What distance on Earth would 1 cm on the globe represent?

Math

When the moon is at its zenith at a point A on earth, it is observed to be at the horizon from point B. Points A and B are 6155 mi apart and the radius of the earth is 3960mi. Estimate the distance of the moon. Thanks!

Physics [No Math]

When calculating weights away from Earth's surface, for example: At 6.38x10^3 km away from Earth's surface a spacecrafts weight is d=rE+rE Then F=(1/4)(SpaceCraftWeight) Why is the distance 2rE?

Physics

1) Determine the force of gravitational attraction between the earth(m=5.98*10^24kg) and a 70-kg physics student if the student is in an airplane at 4.950 meters above the earth's surface.

Physics

The speed of light is about 3.00 x 10 to the power of 5 km/s. It takes approx. 1.28 seconds for light reflected from the moon to reach Earth. What is the average distance from Earth to the moon? Thank you

Chemistry 101

The distance from the Earth to the sun is approximately 9.37 x 10^7 miles. How long does ti take for light from the sun to reach the earth? Speed of light is 3.00 x 10^8 m/s. Show work.

Science

The force of gravity of objects on the moon is approximately one-sixth of their value on Earth. Joe weighs 7633 N on earth. What will Joe's mass on the moon be?

Science

The force of gravity of objects on the moon is approximately one-sixth of their value on Earth. Joe's weight on the moon is 124 N. What will Joe's mass on Earth be?

social studies

Despite temperatures of more than 5,000º F, Earth's inner core is solid because of _____________________. a layer of ice just above it. the fact that Earth rotates so quickly. a thickness of over 1,000 miles. great pressure from the layers around it.

Physics

How far above the surface of the Earth does an object have to be in order for it to have the same weight as it would have on the surface of the Moon? (Ignore any effects from the Earth's gravity for the object on the Moon's surface or from the Moon's gravity for the object ...

Physics

please check these for me Which of the following is not a fluid? a. carbon dioxide b. hydrogen c. seawater d. wood D Which of the following statements is not correct? a. a fluid flows b. a fluid has a definite shape c. molecules fo a fluid are free to move past each other d. a...

Physics

Given that the Sun has a mass 333,000 times larger than Earth’s mass and Earth has an average distance of 1.49 x 1011 m from the Sun, at what distance from the Sun is the center of mass of the Earth-Sun system? a. 1.00 m b. 4.47 x 105 m c. zero d. 333,000 m e. 1.49 x 1011 m

Earth Science

What are two forces that cause the Earth's surface to constantly change and what are their effects on the planet? Please help I do homeschooling and I'm super behind in science please answer before 12:00 p.m. on 11-17-09

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.

physics

Jupiter's gravitational field at the surface is approximately three times that of the earth. A person weighing 120 lb. on the earth's surface would weigh how much on Jupiter?

math

The earth is approx. a sphere. Its diameter is about 12 730 km. Water covers approx. 66 percent of the earths surface. How many square kilometres of land covers the earth?

science

how many days would it take to drive from the earth to the moon at a speed of 75 miles per hour? the average distance from the earth to the moon is 380,000km. 1 km=0.62 miles

SCIENCE HELP PLEASE

Suppose the moon rotated on its axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *HELP ME PLEASE*

Science

The waves that are used have to go deep into the earth. Can Love and Raleigh waves be used for the purpose of mapping the interior of earth? Why or why not?

Physics

how many kilometers would you have to go above the surface of the earth for your weight to decrease to half of what it was at the surface? I know that the mass of earth is 5.97 x 10^24 kg do i have to convert it to km ??

physic

How long will a radio wave, with a wave length of 200 m takes to travel to and for the moon from the earth? (Distance of moon from earth = 3.9 x 108 m)

Physics

Which requires more fuel- a rocket going from the earth to the moon or a rocket coming from the moon to earth? Please explain why. Thank you so much :)

physis

Search: 2. Explain how radioactive decay has always warmed the Earth from the inside, and nuclear fusion has always warmed Earth from the outside.

physics

An astronaut of mass 80 kg lands on a planet,the radius of which is half that of the earth and the mass of which is three times that of earth.what will be the force of attraction which this planet has on him?

Science/Physics

Andee has a mass of 68.5 kg on earth. What is his weight on Earth? What should his mass be in order to have the same weight at the surface of the moon?

Physical Science

Using the formula for gravity, find the force of gravity on a 0.80-kg mass at Earth's surface. (The mass of Earth is 6×10^24kg, and its radius is 6.4×10^6m.).

Science physics

what will be the acceleration due to gravity at up planet whose mass is 8 times the mass of the earth and whose radius is twice that of the earth? g=10

physics hey damon one more please! =]

Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that, at that point, the tugs on the spaceship from each celestial body exactly cancel, leaving the craft literally weightless. Take the distance between ...

physics

1)A hypothetical neutral atom has 77 electrons. One of its electrons is held in circular orbit of radius r = 0.244 nm by electrostatic attraction between the electron and the nucleus. Assume: the interaction between electrons is negligible. Calculate the speed of orbit of this...

Science

Why are the days typically hotter in June than in December here in the US? A.Beacuse the sun gives off more light and heat in the summer B.Because the Earth is closer to the sun in the summer and farther from the sun in the winter C.because the Earth's tilt causes the sun to ...

Physics

An asteroid revolves around the Sun with a mean orbital radius twice that of Earth's. Predict the period of the asteroid in Earth years. (6.38*10^6 radius) I don't understand how to solve this problem.

Physics

A melon of weight 12 N (near the surface of Earth) is moved through a displacement of magnitude 1.00 m. What happens to the gravitational potential energy (of the melon/Earth system) due to this displacement.

astronomy

the diameter of earth is 7928 miles. what is the diameter in inches? in yards? If the diameter of earth is expressed in 12,756km what is the diameter in meters? in centimeter? give yoiur answers in scientific notation

Physics

The moon exerts a gravitational force that is about 1/6 that exerted by Earth. Eplain why the mass of an object measrued on the moon using a balance is the same as if the object were on Earth's Surface/

7th grade Science

Early Earth was constantly being bombarded by meteorites, comets, and asteroids. Was early Earth an open system or a closed system? Explain your answer.

Math

A star is 300 light years away from Earth. If the speed of light is 3 X 10^5 km/s, calculate the distance the star is from Earth. Give your answer in kilometers and written if standard form.

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?

physics

Use the data of this table to find the point between Earth and the Sun at which an object can be placed so that the net gravitational force exerted by Earth and Sun on this object is zero.

physics

Why can astronauts jump higher on the surface of the moon than on the surface of the earth? Is it because their legs are stronger? Has the amount of "body matter," i.e., "mass" changed? Do they weigh less on the moon than on earth? Why

Chemistry 101

The distance from the Earth to the sun is approximately 9.37 x 10^7 miles. How long does it take for light from the sun, to reach the earth? Speed of light is 3.00 x 10^8 m/s. Use dimensional analysis to solve.

College Physics

In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotational motion is faster than ...

English

I left out a few more sentences I'm really doubful about. Thank you very much for helping me. 1) In the summer my village is very lively. There are a lot of tourists who spend their holiday in bed and breakfasts and go to restaurants. 2) You didn't vary a single word from the ...

physics help

Larry weighs 300 N at the surface of the earth. what is the weight of the earth in the gravitational field of Larry? -would it still be 300 N

Physics

Explain how redioactive decay has always warmed the Earth from the inside and how nuclear fusion has always warmed the Earth from the outside.

physics

A planet is 400 times more massive than the earth, and its radius is 10 times that of the earth. The weight of an object on the surface of the planet is?

Physics

A canoe has a velocity of 0.400 southeast relative to the earth. The canoe is on a river that is flowing at 0.450 east relative to the earth.

physics

Light from the sun reaches Earth in 8.3 min. How far is the Earth from the sun? The velocity of light is 3 × 108 m/s. Answer in units of m

Physics

Acceleration due to gravity on the moon's surface is 1/6th that on the earth . An object weight 900N on the earth . What does it weight on the moon ?

science

the radius of planet x is twice that of the earth and its mass is also twice that of the earth. The gravitational acceleration on planet x would be approximatley?

physics

A newly-discovered plant, "Cosmo", has a mass that is 4 times the mass of the Earth. The radius of the Earth is Re. The gravitational field strength at the surface of Cosmo is equal to that at the surface of the Earth if the radius of Cosmo is equal to... I guess I need some ...

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