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

25,143 results, page 54

### physics

in the model ,how far away from the earth would the sun be?

### earth

Which process could lead directly to the formation of pumice rock?

### science

how much less is the gravity on the lunar surface than on earth?

### Science

What is the gravity at the height of 15000 km above the earth surface

### Physics

What is the magnitude of the earth's gravitational field at sea level?

### science

What are 2 ways resources are brought up from under Earth's surface?

### Physics

How can one solve this equation for t? Y = 1.3 + 18.8 t - (g/2) t^2 = 0 (Assume g = 9.8 m/s^2, the value on Earth)

### Earth/Space Science

Why are icebergs in shipping lanes so hazardous?

### Physic

The tidal interaction between the Earth and the Moon has caused:

### physics

if an object weighs 6 kgs on earth, what will it's weight be on mars

### Science

If Sam weights 114kg on earth what is his mass on the moon

### Science

If Sam weigs 114kg on earth what is his mass on the moon

### Physics

weightlessness experienced while orbiting the earth is due to ?

### Science

Express mass of the Earth in unit of M. Take ME = 6 x 1024kg.

### Science

What role does induction play when lightning strikes Earth?

### Science

in what ways do you think earth's moon may be similar to mercury

### earth science

Why do deciduous trees lose their leaves in the fall?

### SCIENCE

IF SOMEONE WHEIGHS 12 KG ON THE MOON SO HOW MUCH HE WILL WEIGH ON THE EARTH

### Biology

How does the structure of Earth’s interior affect seismic waves?

### Earth science

In what ways do earths system interact with each other

### Geography

How does the movement of tectonic plates shape the earth's surface?

### science

Describe the motions that causes one day on earth

### earth

3. What can scientists learn from the rate at which radioactive elements decay?

### phisecs

`filling the blanks: sun_________________ than moon. earth is__________________mercury.''.

### science

how do you explain the millions of different substances found on earth

### earth science

What latitudes are most likely to see glaciers? A. 30° N and 30° S B. 10° N and 10° S C. 45° N and 45° S D. 90° N and 90° S

### geography

This process distributes the heat from the sun around the earth?

### Pyhsics

what is the speed of the rocket when it is 345 m above the surface of the earth?

### English

Would down to earth be considered a character trait?

### Earth Science

Could I have some help with the question down below?

### Earth science

how does the temperature of ocean currents affect climate?

### Science

How does the sun's gravitational attraction to the earth compare to that of the moon?

### maths

distance around the earth is 4.5x10 ^4 km. whats that in metres?

### physics

An astronaut has a mass of 60kg.what is her weight here on earth

### science

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

### maths help!

find the mass of the earth assuming the radius is 6400km

### Science

If you weigh 300 N on earth, then what is your mass and weight in mars?

### Science

When did the first human exist? And when did they start populating the earth?

### Ap physics

Determine the mass of the earth from the known period and the distance of the moon

### physics

What is the period (in seconds) of a simple pendulum 62.0 cm. long, on the earth?

### Science

why are lunar rocks used to determine the age of a earth.

### Science

How much you would weigh on the moon if you are 72 pounds on Earth

### Physics

What is the acceleration due to gravity 'g' on the moon if 'g' is 10m/s² on the earth?

### 8th grade Science

In the early 1900s, Alfred Wegener noticed that some of the Earth's continents looked like they might fit together like a jigsaw puzzle. He also observed that the continents that looked like they fit together had similar plants, animals, and rock formations. From this evidence...

### physics

There is a 1500 mile race course. The max foward acceleration is 4 m/s squared and the max backward acceleration is 6 m/s squared. I start at 600m and must go to the 800m mark (I must travel 200m). What is an equation for the fastest time that I could get to 800m? What is the ...

### physic

Superman must stop a 120km/h train in 150m to keep it from hitting a stalled car on the tracks.If the train's mass is 3.6x10^5kg,how much force must he exert?Compare to the weight of the train (give as%).How much force does the train exerts on Superman?

### physic

Superman must stop a 120km/h train in 150m to keep it from hitting a stalled car on the tracks.If the train's mass is 3.6x10^5kg,how much force must he exert?Compare to the weight of the train (give as%).How much force does the train exerts on Superman?

### Statistics

For a certain computer program a password must be exactly 5 characters long the first character must be a number 0-5, the second third and fourth character can either be one of the 26 letters or a number 0-9, the fifth character has to be exactly the same as the second ...

### Physics

(a) How much heat in kcal must be provided for a 0.853 kg block of lead to raise the temperature of 0.015 kg block of ice from -5ºC to 0ºC? (b) How much heat in kcal must be provided for a 0.853 kg block of lead to melt a 0.015 kg block of ice from at 0ºC? (c) How much heat...

### 7th grade Social Studies Ms. Sue

1. Which climate region dominates most of Northern Africa? (1 point) humid continental highland tundra arid 2. What kind of storm covers the largest area? (1 point) rainstorm blizzard hurricane tornado 3. Earth’s climate is affected by latitude, landforms, and a combination ...

### english 17

Pronoun-antecedent agreement with indefinite pronouns 17a. Each of the applicants must submit his or her completed form to the interviewer. 17b. Each of the applicants must submit their completed forms to the interviewer. My answer is: 17b

### Chemistry

A solution contains 0.133 g of dissolved Lead. How many moles of sodium chloride must be added to the solution to completely precipitate all of the disolved lead? What mass of sodium chloride must be added?

### Math

Kris bought a new fur coat for $8,000. She must pay 5% sales tax and 7% excise tax. The furrier is End of exam shipping the coat, so Kris must also pay a $15 insurance charge. What is the total purchase price of the coat? A. $8,400 B. $8,960 C. $8,560 D. $8,975 D

### math

How do I write this problem? to receive a grade B- in a math course, you must have a mean of 83 on five tests (4 tests + one final) all 100 pts maximum each. Your scores thus far are 85,79,82,and 81. How many points must you have on the final, to earn the B-? write down your ...

### medicine

A cat with a gastrotomy tube must receive 300 kcal daily. A 15 oz can of food has 1500 kcal. The food must be diluted with water 50:50 so that it is thin enough to fit through the tube. A maximum amount of 45 ml can be given at each feeding. How many feedings does the cat need...

### precalculus

State the parent function that must be transformed to create the graph of y=2/3x^3 - 2. Describe the transformation that must be applied to the parent function. Parent function= x^3 I don't know the transformation...

### MATH

Katie must take five exams in a math class. Her scores on the first four exams were 68, 66, 82, and 80. Answer the following questions: The maximum score on an exam is 100 points. If it is not possible for Katie to achieve the required score on the exam, type np in the answer ...

### CONSUMER MATH

The owner of Campus Cafe plans to open a second location on a satellite campus in 5yrs. She buys an annuity that pays 10.5% interest compounded annually A. If the payment is $4000 a year, find the future value of the annuity in 5yrs. B. How much more interest would be earned ...

### Physics

If a 2 m tall man is looking at a plane mirror from an eye which is 20 cm from the top of his head, what is the minimum length that the mirror must be so that he can just barely see his whole body in the mirror? How far up from the ground must the mirror be placed? I'm ...

### Astronomy

1. In this collection of problems we will try to use what we have learned to see what information about a hypothetical Solar System planet we can extract from observations. The planet, Nursat, is observed to be in opposition every 374 days. Use this information to find the ...

### Physics

The sun is a satellite of Milky Way's galactic central cluster. The sun revolves around this center with a radius of 2.28x10^20 m. and with a period of 2.52x10^8 years. If the universe is 16 billion years old. a) How many times has the galaxy rotated and b)with what speed is ...

### math

Please show me how to solve: At the local ballpark, the team charges $5 for each ticket and expects to make $1,300 in concessions. The team must pay its players $1,800 and pay all other workers $1,500. Each fan gets a free bat that costs the team $3 per bat. How many tickets ...

### MATH

A disc jockey has 12 songs to play. Seven are slow songs, and five are fast songs. Each song is to be played only once. In how many ways can the disc jockey play the 12 songs if The songs can be played in any order. The first song must be a slow song and the last song must be ...

### Math-confused!

A disc jockey has 12 songs to play. Seven are slow songs, and five are fast songs. Each song is to be played only once. In how many ways can the disc jockey play the 12 songs if: *The songs can be played in any order. *The first song must be a slow song and the last song must ...

### Algebra

A small software company invests $30,000 to produce a software package that will sell for $64.95. Each unit can be produced for $42.25. (Round your answers to the nearest whole number.) (a) How many units must be sold to break even? units (b) How many units must be sold to ...

### english 9

Read the conclusion about “The Beginnings of the Maasai,” and then answer the question. One purpose of “The Beginnings of the Maasai” is to explain the weather. Which excerpt best justifies this conclusion? The sky god is powerful, but can change from nurturing to ...

### poem

what is the shrike by sylvia plath about? When night comes black Such royal dreams beckon this man As lift him apart From his earth-wife's side To wing, sleep-feathered, The singular air, While she, envious bride, Cannot follow after, but lies With her blank brown eyes starved...

### physics

On Earth a baseball player can hit a ball 120 m by giving it an initial angle of 45° to the horizontal. Take the acceleration due to gravity as g=10 ms^-2 Suppose the batter repeats this exercise in a space 'habitat' that has the form of a circular cylinder of radius R = 10 ...

### English Language and Composition

1. Which of the following writers were never published in a periodical? a. Mark Twain b. Jonathan Swift c. Henry David Thoreau d. George Orwell e. None of the above 2. Which of the following qualities must a piece of writing have to be considered an essay? a. it must present ...

### Child Care

Two three-year-olds, Jenna and Neal, are pulling one another's hair. Using guidance techniques, what would you do? A. Ask, " What do you think you're doing?" B.Physically separate Jenna and Neal C.Say,"You must not do that.It's not nice" D. Remove Neal and say, " You must not ...

### physics

a place kicker must kick a football from a point 32.0 m from the goal. As a resultof the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 23.0 m/s at an angle of 53 degrees to the horizontal. To determine if ...

### Physics

The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s^2? Details and assumptions You may assume the sun's orbit is ...

### Physics 1 - Mechanics

You throw a rock with an initial horizontal velocity and it hits the ground at x meters away from your feet. What if: (a) You throw the same stone with the same initial conditions but instead you do this on a another planet with a mass 4 times the mass of the earth. With what ...

### Language Arts CHECK ANSWERS

PLEASE CHECK MY ANSWERS 1. Adolescence is the period of life that follows A. infancy. B. adulthood. C. childhood.*** 2. Students can feel overwhelmed by A. a day off. B. an easy test. C. a lot of homework.*** 3. Everyone admired the grandeur of A. the rose garden.*** B. the ...

### Intermediate Algebra

Create a list of six questions on solving equations with absolute value symbols that I will try to research, address, discuss, and/or express? Example: Google Earth: The Google Earth image shows the western side of The Mall in Washington D.C. The distance between the Lincoln ...

### To SraJMcGin

*Des vacances speciales* Pensez à des vacances spéciales (ou imaginaires) avec votre famille ou vos amis. Faites une série de dessins qui montrent, en ordre, les activités spéciales. (Vous pouvez aussi utiliser des photos.) enfin, sous chaque dessin, écrivez une phrase ...

### physics

A proton is moving at 425 m/s. (a) How much work must be done on it to stop it?(answer in joules) (A proton has a mass of 1.67×10−27 kg.) (b) Assume the net braking force acting on it has magnitude 8.01×10−16 N and is directed opposite to its initial velocity. ...

### phi208

robinson agrees with Aquinas' idea that: honor is a subjective quality honor is secondary to integrity honor must be displayed in action honor is secondary to magnanimity none of the above i think the answer is honor must be displayed in action

### math

The owner of Campus Cafe plans to open a second location on a satellite campus in 5yrs. She buys an annuity that pays 10.5% interest compounded annually A. If the payment is $4000 a year, find the future value of the annuity in 5yrs. B. How much more interest would be earned ...

### FRENCH

*Des vacances speciales* Pensez à des vacances spéciales (ou imaginaires) avec votre famille ou vos amis. Faites une série de dessins qui montrent, en ordre, les activités spéciales. (Vous pouvez aussi utiliser des photos.) enfin, sous chaque dessin, écrivez une phrase ...

### algebra (please help)

A small software company invests $30,000 to produce a software package that will sell for $64.95. Each unit can be produced for $42.25. (Round your answers to the nearest whole number.) (a) How many units must be sold to break even? units (b) How many units must be sold to ...

### MATH WORD PROBLEM

Diego works at a toy store. His boss tells him to order 420 stuffed bears and toy cars. He must order 4 stuffed bears for every 3 toy cars. a) If he must order 9 large stuffed bears for every 7 small stuffed bears, how many of each stuffed bear should he order? b) If Diego ...

### Math(Assignment due today)

In Alberta, ramps that are designed for people using mobility devices must meet certain safety requirements. One such requirement is that the angle between the ramp and the horizontal must be less than 4.8 degrees. Explain whether or not the ramp in the picture below is ...

### help, bobpursely

Please take a look at DEVON's trig equation at 9:14 I must be missing something obvious. If the second had been 3sin 2x it would be a straight forward question. The way it stands I was able to "reduce" it to the equation 8sin^4 x - 8sin^2 x + 3sin x + 2 = 0 I tested this ...

### Math

Please help with this problem! Planet Pemdas is a perfect sphere that does not rotate. If a rocket flies in a path following the circumference of Pemdas, and maintains a constant altitude of 25,000 feet above the surface for one orbit, how many more feet than the planet's ...

### 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.

### Foreign languages

Writeacher, could you please check these sentences on school rules? Thank you very much for your invaluable help. 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 ...

### physics

take a satalite going around the earth... what allows us to say net force (radial) = Fg = Fr = ma were the Fg is the force of gravity exerted on the satalite were Fr is radial force and ma is the mass and acceleration of the satalite ok I understand newtons second law but what...

### Earth Science

What two things are used for determining how a rock was formed??

### Earth Science

What is the name of scientists who study earthquakes?? ♥ thanks Seismologists

### biology

What parts of the solid earth, atmosphere and hydrophere are not included in the biosphere?

### Science

At what latitude (on Earth) is the elevation of the South Celestial Pole greatest?

### earth`s changing surface

the process that breaks down and changes rock

### earth`s changing surface

the process that changes the size and shape of rock

### earth`s changing surface

the process of moving weathered rock and soil

### science

What moves and picks up rocks and is one slow change to the earth?

### Science

The middle layer of the earth, made of solid, hot rock, is the what?

### Physics

The average radius of the earth is 6.38*10^6m. Is the diameter just twice that or 12.8*10^6m. The circumference is 6.28(6.38*10^6)=40.1*10^6m

### Physics

Find the gravitational force between the sun and the earth in newtons?