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

24,970 results, page 50

science

how are mercury and venus similar to earth?

science

what is the outermost layer of earth's surface

earth science

metric unit for length

earth science

soil maps are used to do what

earth science

how do you draw a landscape region?

earth

What is the difference between a resource and a condition

physics

what is the mass of a 1000N man on earth?

earth

What does the phrase "salt of truth" mean?

Science

What is th weight on earth of a girl with a mass of 30 kg?

provine

How does the tilt of the earth affect climate

Astronomy

The precession of the Earth its causes, and its ramifications

Mechanics

If an object weighs 39.2 N on earth, what is its mass?

Mechanics

If an object weighs 39.2 N on earth what is its mass

Mechanics

If an object weighs 39.2 N on Earth, what is its mass?

3rd grade

how many miles is Jupitor from Earth?

Science

What are some bad things on Earth ?

3rd grade

how faraway is Pluto from Earth?

physics

What is the average density of the earth? M = 5.97 x 10^24 kg , R = 6370 km

science

how did the miners of chile get into the earth

science

what material is earth and mars made of ?

science

how are resources brought up from the earth's surface?

Science

If we can't dig to the center of the earth, how do we know that is down there?

science

how do geologists know the earth is layered inside?

earth

what different elements are used in photosynthesis?

Earth Science

What is the landform of the Grand Teton?

earth

do any questions here actually get answered??????

Earth Science

How old is the Gneiss in Greenland?

physics

what is the weight of a 3.0 kg object on the surface of the earth?

earth science

How do astronomers use satellites?

Chemistry

Most of the earth is made of what? Is it helium?

earth science9volcanos0

when a volcano becomes dormant it is...

physics

What length of pendulum has a period of 0.9 s on Earth?

physics

What length of pendulum has a period of 0.9 s on Earth?

Earth science

What is the primary cause of crustal movement?

physical science

define earth station

earth science

what are the variables on rocks and minerals

physics

How far from Earth will Venus be today?

science

The study of the Earth's magnetic field is known as

early history

Who were the first people on earth?

Science

Where will gravity pull you in the center of the earth?

science

Is there any stars between the Earth and the Moon?

Science

what is the distance above Earth's surface?

Chemistry

What is the mass of a 4 kg object, A. On the earth (g=-10 m/s/s) B. On the moon (g=-2 m/s/s)

Science

how many of earth's atmospheres is on you at sea level?

math

Find the weight of a 60 kg astronaut on earth?

math

How big is the sun compared to earth.

Science

Why are there so many different species on earth today?

Biology

What percentage of animals on earth are vertibrates? 5% 25% 50% 95%

Science

When are tides in the earth's oceans the highest

physics

A neutron star and a black hole are 5.650e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030 kg. What is the magnitude of the gravitational attraction between the two?

Logarithms

Kepler's third law of planetary motion relates P, the period of a planet's orbit, to R, the planet's mean distance from the sun, through the equation log P = 1/2 (log k + 3 log R), where k is a constant. a) Rewrite the formula as a single logarithm. b) Rewrite the formula in ...

Math

1170 students are going on trip. they are flying on 138 seat planes. all students must go and all must be seated. how many planes are needed to transport all of the students ?

Science

1.What is refraction? The bending of light as it passes through matter 2.What type of lens would you use to magnify your view of a butterfly? Concave 3.What is a sound wave? Sound waves are waves of energy moving through matter.Sound waves are vibrations of molecules,molecules...

English

Can you check these sentences for me, please? Thank you 1) Eliot's The Waste Land is divided into five unequal sections which show no realistic or logical continuity. 2) The first four sections correspond to the four Greek classical elements of earth, fire, air and water. 3) ...

Marketing Management

What are some key issues /opportunities for Subway Resturant Please check reliable sources about this company's business plans and finances. It's in a highly competitive field of fast food. What can it do to stand out and attract more customers? In out area, Subway has ...

Health

Can you please check these sentences? Thank you, Writeaacher! 1) You must be respectful of your classmates and of your teachers. You should stand up when teachers (or your teachers?) enter the classroom. 2) You mustn't drink or eat during lessons but you can do it during the ...

Algebra Word Problem

I REALLY NEED YOUR HELP !!!!!!! Suppose it takes 3 days for a space vehicle to travel from Earth to the moon. About how long would it take the same vehichle traveling at the same speed to reach Venus? Closest Distance From Earth to: Moon 240,000mi Venus 26,000,000mi the space ...

pre-algebra

A) light travels at approximately 186,000 miles per second. approximately how far will it travel in 1 minute? express your answer in scientific notation B) the sun is approximately 93,000,000 miles from the earth. about how long does it take light to travel from the sun to the...

Math

Graph and identify the coordinates of a rectangle with a length of at least 5 units and a width of at least 2 units. Each vertex of the rectangle must be in a different quadrant. Two of the points must have rational coordinates that are not integers. I'm not sure what to do. ...

Pls check if I got it correct

Which of these situations can you represent with the inequality X < and = 49? 1. You must be no more than 49 inches tall to go on this ride. 2. A loaf of bread must be baked for at least 49 minutes. 3. You have no more than 49 minutes left on a parking meter. 4. The bill at...

English

{At a restaursant} For hear or to go? Is this for here or to go? It's for here, please. It is to go, please. (Are the expressions above all grammatical? What is the meaning of 'is to' in 'It is to go, please.'? Does it mean 'must'? That is, "It (the food) must go, please." Am ...

Physics Waves

Earthquakes are essentially sound waves traveling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse seismic waves. These travel at different speeds. The speed of longitudinal waves, called P waves, is...

psychology

In order to be useful, a test must be reliable. In other words, it must : performance. a. produce the same results from one time to the next b.predict other criteria of the trait being measured c, measure what it is designed to measure d. compare results againt etablished ...

science

Suppose you are hiking along a trail. Make a comparison between your displacement and your distance traveled. Check all that apply. -Your displacement must be less than your distance traveled. -Your displacement must be greater than your distance traveled. -Your displacement ...

physics

Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal waves, called P waves, is ...

Physics

Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal waves, called P waves, is ...

Physics

Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal waves, called P waves, is ...

Physics

Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal waves, called P waves, is ...

Physics HELP!!

Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal waves, called P waves, is ...

Environmental Science

29. A common feature of thermal pollution and artificial eutrophication is that they both a. have sources that are difficult to identify and control b. cause large mats of algae to bloom in fresh water c. are a result of power plants and other industrial activity d. decrease ...

PHYSICS

An object has an acceleration of 0 m/s squared. Does this mean that the object must be stationary. Explain. Stationary means that the object does not move. I don't think that the object must be stationary in this case because the scalar zero only tells us that the speed of the...

Technology

22. Telecommunications is a growing field of technology. We use such things as televisions, telephones, radios, and computers to communicate using electromagnetic waves. Take one of these devices and explain the five steps it must go through in the communication process. 22. ...

physics (Newton"s law of gravitation)

Please, can someone help me with this? A neutron star and a black hole are 2.400e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030 kg. What is the magnitude of the gravitational ...

World Religions

Many people see life on earth as constant worry, physical poverty, spiritual alienation, sickness, hatred, mindless toil, and death. The ultimate goal of nirvana or being one with the Atman seems infinitely better than suffering on earth. For more information, check this site...

science

The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground? (Note: this question refers to Newton’s equation for the force of gravity...

my pre-algebra questions

A) light travels at approximately 186,000 miles per second. approximately how far will it travel in 1 minute? express your answer in scientific notation B) the sun is approximately 93,000,000 miles from the earth. about how long does it take light to travel from the sun to the...

English

I urgently need you to check these sentences on the Holocaust. Thank you. 1) 27 January was chosen as the date for Holocaust Memorial Day because it was on this date in 1945 that the largest Nazi killing(?) camp Auschwitz-Birkenau was liberated. 2) On this day our school ...

Physics

To win the game, a place kicker must kick a football from a point 40 m (43.744 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 23 m/s at an angle of 30.9 ◦ from the horizontal. The ...

science

What can scientist learn from moon rocks? A. The moon's water supply evaporated in recent years B. The moon is denser than earth C. The moon is older than the Earth D. The moon and earth are made of similar material let me see A and C are wrong cause a say the moons watre ...

PHYSICS

A beam of electrons is moving in a horizontal circle in a uniform magnetic field that is directed downward. The speed of the electrons is 1.0*10^7 m/s and the magnitude of themagnetic field is 1.0*10^-3 T. As seen from above, are the electrons moving clockwise or counter ...

Physics - Astronomy

A hypothetical moon is orbiting Saturn in a circular orbit that has exactly 3 times the period that an object orbiting in one of one of the gaps in Saturn's rings would have. As measured from the center of Saturn at what fraction [to 3 decimal places] of that moon's orbital ...

SS

What is one certain long-term cost of adding to the national debt? Americans in the future must have fewer public services. Americans in the future will not vote in elections. Americans in the future will not enjoy the benefits of the program. Americans in the future must find...

Physics

A particle with a charge of -60.0 nC is placed at the center of a nonconducting spherical shell of inner radius 20.0 cm and outer radius 33.0 cm. The spherical shell carries charge with a uniform density of -2.02 µC/m3. A proton moves in a circular orbit just outside the ...

Math

Which of the following is true if a pentagon tessellates a plane? a. A pentagon never tessellates a plane b. All of its sides must be the same length c. It must be a regular pentagon d. It has one pair of parallel sides I was thinking its (c) but not sure.

math

Find digits A and B in the number below so the folling condition are true. The 5-digit number must be divisible by 4. The 5-digit number must be divisible by 9. Digit A cannot be the same as Digit B. 12A3B Explain the steps you followed to solve the problem.

physics

to qualify for a race, a car must average 350 km/hr for four laps. If a driver averages 285 km/hr for the first two laps, what average speed must be achieved for the final two laps in order to qualify?

social studies

which is not necessary in order for a bill to become a law ? a) the governor must sign the bill b) a majority vote is needed in the house c) the majority of vote is needed in the senate d) the same version of the bill must be passes

History

- The ways in which states around the globe have related to each other during various periods and the issues that have shaped their interactions. I need 4 specific events, at t 1 of which must come from the period prior to 1700, t one must come from 1700-1900, and 1 must come ...

science

how do the moons stay in orbit around jupiter http://www.synapses.co.uk/astro/moon1.html Thanks

math

a supervisor must split 60 hours of overtime between five people. One employee must be assigned twice the number of hours as each of the other four employees. How many hours of overtime will be assigned to each employee?

English

i not get what this poem mean it be a ballad but i not get what theme be do the guy girl be in strong bond? True Thomas lay on Huntlie bank; A marvel he did see And there he saw a ladye bright Come riding down by the Eildon Tree. Her skirt was o' the grass-green silk, Her ...

Pyhsics

A) On planet X, an object weighs 19.2 N. On planet B where the magnitude of the free-fall acceleration is 1.17 g (where g = 9.8 m/s2 is the gravitational acceleration on Earth), the object weighs 34.9 N. The acceleration of gravity is 9.8 m/s2 . What is the mass of the object ...

English

Can you please check these sentences for me, please? It's urgent. 1) What do you think about going to the cinema? How about meeting at school? 2) How do I arrive at the school? I put the clothes back in the wardrobe. I put (is "take") the rubbish out once a day. 3) I must have...

Science

1.Which of the following gases was most likely present in Earth's earliest atmosphere? A. nitrogen B. hydrogen* C. argon D. oxygen 2. Which of the following statements accurately describes the development of the geologic time scale? A. Scientists developed the geologic time ...

8th grade

A) light travels at approximately 186,000 miles per second. approximately how far will it travel in 1 minute? express your answer in scientific notation B) the sun is approximately 93,000,000 miles from the earth. about how long does it take light to travel from the sun to the...

Chemistry

Fe2O3(s) + 2 Al(s) 2 Fe(l) + Al2O3(s) Suppose we want to make 18.0 grams of iron. We must figure out how much starting material we need. This is a three-step calculation. Let's go through these steps one-by-one to calculate the mass of Fe2O3 that we must start with. ...

American Literature

So for my class, I have to write a poem with these guidlines: 1. You have to include 3 elements of romanticism. 2. It doesn't have to rhyme, but it must have a certain rhythm. 3. You should make it iambic, trochaic, tetrameters, etc... 4. It must be at least 16 lines. How do I...

algebra

At local ball park team charges $4 for each ticket and expects to make $1100 in concessions. Teams must pay its players $1300 and pay all other workers $1200. Each fan gets a free bat that costs the team $3 per bat. How many tickets must be sold to break even?

history

Can someone please help me? :) 1. Which of the following best describes the beliefs of Andrew Jackson? (1 point) States’ rights should be exercised over federal law. Federal funds should be kept in a national bank. The nation should have a strong federal government. Force ...

Math

chris wants to buy a cell phone that costs $215.00. his parents say chris must raise 35% of the money himself. how much money must chris raise? a.$705.00 b.$75.25 c.$139.75 d.$215.00 ???

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