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

25,161 results, page 50

English

Writing Skills: A Research Project, you are asked to compose an essay responding to ONE of the prompts offered. At its base, this is a personal essay, but you must incorporate research that will support your views and opinions. The core of this essay must be based solely on ...

Alebra

Kathy works at an optical store selling eyeglasses. Each week she earns $180 plus a 2% commission of her total sales for the week. Next week she wants to earn at least $350. 1. Write an inequality that represents the dollar amount of eyeglasses kathy must sell to earn at least...

Biology

Blonde hair (bb) is a recessive trait and brown hair (Bb) is dominant. If both parents have brown hair, what must be true if one of their children have blonde hair? A. Both parents must be hybrid with regard to hair color (Bb) B. Both parents have two brown hair genes (BB) C. ...

help math

Problem #1 what values for x must be excluded in the following fraction? (x+5)/(-1) my answer i think its none Problem #2 what value for x must be excluded in the following fraction? (x-3)/(4x-5)(x+1) this one i do not know x can not equal 5/4 or -1. Each of these would make ...

math

A farmer plants seeds in a field that is 125 meters long by 75 meters wide.The seeds must receive 1 liter of water per square meter every day. How many liters must the farmer apply to the field everyday?

math

A farmer plants seeds in a field that is 125 meters long by 75 meters wide.The seeds must receive 1 liter of water per square meter every day. How many liters must the farmer apply to the field everyday?

physics

A football kicker lines up to kick a game winning kick. The goalpost is 30m away and the ball must clear the 3.3m high cross-bar. If the kick leaves his foot at an angle of 35 degrees, how fast must the kick be to clear the bar?

Math Problem (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. How many units must be sold to break even? How many units must be sold to make a profit of $100,000?

calculus

. Sony Ent. is marketing a new smartphone. It determines that in order to sell x smartphones, the price per product must be It also determine that the total cost of producing x smartphones is given by a. Find the total revenue, R(x). b. Find the total profit, P(x). c. How many...

Biology

The creation of sex cells occurs in meiosis. Explain what happens when a new organism is created and life begins. Answer: meiosis is a process of cell division that produces sex cells, or gametes. Gametes are reproductive cells such as the sperm and egg. As gametes are ...

Physics

a. An object has a mass of 33 kg. The acceleration of gravity is 9.8 m/ s^2. What is its weight on the earth? Answer in units of N. 2. What is its mass on the moon where the force of gravity is 1/6 that of the earth? Answer in units of kg. 3. What is the weight of that object ...

Math

A bottle contains some milk. Three glasses of capacity 4l,6l,and 8l are to be filled an exact number of times from it. What must be the least capacity of the bottle. Please mr sue give me what must be the least capacity of the bottle

chemistry

An automobile maker has an order for 7,500 new cars to be delivered in one week. Each car must be fitted with a new hood ornament that requires 1 hour and 15 minutes to install. Assuming the factory operates on a standard workweek shift (8 hours per day for 5 days), how many ...

Science

In humans, having dimples is a dominant trat. In order for a child to have dimples A. at least one parent must not have dimples and pass on the recessive allele. B. both parents must not have dimples and pass on the recessive allele. C. both parents must have dimples and pass ...

English

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. I chose A. is that right? please explain.

Physics

A spring with a force constant of 4.5×104 N/m is initially at its equilibrium length. How much work must you do to stretch the spring 0.070 m? How much work must you do to compress it 0.070 m?

How far of the Taurus form Earth?

How far of the Taurus form Earth? Answer in light year... Help me please.... The brightest star in the constellation of Taurus is Aldebaran (also known as Alpha Tau). An orange-red giant which is the thirteenth brightest star in the heavens, it was one of the four Royal Stars ...

Maths A

For this question, use the copy of the Random Number table provided at the end of this AAT. (This table was copied from page 111 in the Textbook.) Select 48 values according to the following criteria. o The first thirty (30) numbers must lie in the range from 48 to 58 ...

Physics

Halley comet which passes around the sun every 76 years has an elliptical orbit. when closest to the sun it is at a distance of 8.823 x 10^10 m and moves with a speed of 54.6 km/s. The greatest distance between hally's comet and the sun ( aphelion ) is 6.152 x 10^12 m. ...

Physics

Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. The radius of the orbit is 2.26 × 10-11 m. Determine the magnitude of the electron's ...

Science

Which of the following is NOT a common landform caused by the passing of a glacier? Drumlins Esker Moraine Steppe ******************** There are sometimes flowing rivers within a glacier. True *************************** False Glaciers form and grow when the snowfall from one ...

math,correction

can someone correct this for me parts A-E and if i am wrong can you help me....please How many 7-digit telephone numbers are possible if the first digit cannot be zero and..... a) only odd digits may be used? my answer: 8125 b) the telephone number must be multiple of 10(that ...

help...urgent..calculus..please show tthe way to s

Sony Ent. is marketing a new smartphone. It determines that in order to sell x smartphones, the price per product must be p=280-0.4x. It also determine that the total cost of producing x smartphones is given by c(x)=5000+0.6x^2 . a. Find the total revenue, R(x). b. Find the ...

Math

A boat, whose speed in still water is 2.80m/s , must cross a 280m wide river and arrive at a point 120m upstream from where it starts. To do so, the pilot must head the boat at a 45.0 degrees upstream angle. What is the speed of the river's current?

Math

In how many ways can a committee of 12 people, of which 5 must be in the 21−30 age group, 4 must be in the 31−40 age group and 3 must be in the 41−50 age group, be chosen if there are 6 people of each age group?

dynamics

(a) A rocket is travelling out of the earth’s atmosphere. During flight it burns fuel at a rate of 80kg/s producing a constant thrust of 500kN which drives the rocket in a vertical trajectory. It has a mass of 3500Kg when it reaches a speed of 1220m/s. At this point in the ...

Physics

To win the game, a place kicker must kick a football from a point 19 m 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 16 m/s at an angle of 59.8 from the horizontal. The acceleration of gravity...

Trigonometry

a satellite camera takes a rectangular-shaped picture. the smallest region that can be photographed is a 4km by 6km rectangle. as the camera zooms out, the length 1 and the width w of the rectangle increase at a rate of 3km/second. how long does it take for the area A to be at...

Trigonometry

a satellite camera takes a rectangular-shaped picture. the smallest region that can be photographed is a 4km by 6km rectangle. as the camera zooms out, the length 1 and the width w of the rectangle increase at a rate of 3km/second. how long does it take for the area A to be at...

french

can someone help me edit this? Bonjour, mon client s'appelle Tiffany. En général, elle est très énergique et très sportive. Elle a aussi une grande collection de certificats et des prix. Pendant son temps libre, Tiffany aime lire, jouer de l'ordinateur et écouter de la ...

Math

A committee, which consists of two mathematicians and three scientists, will be formed from four mathematicians and six scientists. How many possible committees can be formed if : a. any of the mathematicians and scientists are included? b. one particular scientist must be in ...

reading

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

math

What is true for motion in a straight line. A. if a vechile has zero velocity , it must be stationary. B.the graph of position against time has to be a straight line. C.acceleration is the rate of change of speed. D.velocity is the rate of change of position. E.a reversing ...

Science - Maps and Computers - Please Check

Please help me with the following: A single ocean color satellite can collect how many data points? A. 2,000 B. 2,000,000 C. 20,000 D. 2,000,000,000 I know the answer is not D, because I got it wrong. I think the answer is mostly A, but I also think it is possibly B. Is A ...

physical science

A kg ball of lead rests next to a 10 kg rock. which statement below is true:a:the lead ball and rock have the same amount of inertia,b:if the lead ball and the rock fell from the same height in a vacuum, the rock would hit the ground first because it is less massive,c: on the ...

Statistics

Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey (randomly generated phone numbers were used) of ...

Earth Science

How are distances in space measured? What is the nearest star to Earth beyond the sun and how far away is it???? http://en.wikipedia.org/wiki/Light_year http://en.wikipedia.org/wiki/Alpha_Centuri why does Jupiter spin so fast while it's do big

ss

which of the following are true statements about the qualifications of state legislature? a.senators must be at least 21 years old b.no one without a college degree may be a legislature c.legislatures must be Georgia residents for at least 2 years d.legislatures may serve any ...

Physics

[Young & Freedman, 3-12] A military airplane on a routine training mission is flying horizontally (in the positive x-direction) at a speed of 120. m/s and accidently drops a bomb (fortunately not armed) at an elevation of 2090 m. Air resistance may be ignored and answer with ...

science

I am studying science at GCSE. I a working through a revision book and have come across a question which i am unsure of the answer. The question is, "state the number of different elements present in C6H5CO2Na." The answer i have is 14 but still i am unsure. Please could ...

Science- PLEASE, this is due tomorrow for test!

What is the section of EMS of satellite phones? What wavelength and frequency does it use? are there any dangers in using it? What is the wavelength and frequency of pagers? are there any dangers in using it? Is there any danger in using cordless phones? What is the wavelength...

please check my answers

To make sure its correct before I turn it in Q.If f(x) is a linear function, which statement must be true? A.f(x) has no x2-term. Q2.The graph of a function must be linear if it has what characteristic? A2.It has a constant slope. Q3.If f(x) is a linear function, what is the ...

Earth Science

What is the primary cause of surface currents?

Science

When did our Earth form to a planet? =]

French

What is the significance of the scorched- earth policy??

physics

A woman has a mass of 64.2 kg. What is her weight on earth?

science

how can the wind reshape the surface of the earth?

science

What causes daylight and night on Earth?

earth

how do isostatic adjustments affect isostasy

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-forces

1. NASA launched a 550kg satellite into space. Its engines have a thrust of 8000N. a) What is the downward froce of gravity acting on the rocket at blast off? (is it 5390N?) b) What is the acceleration of the rocket at blast-off? (Hint: Fine Fnet first) 2. A planet has a mass ...

math

Five athletes are chosen to represent their sports at the school pep rally. Two girls and three boys are selected to walk into the gymnasium. If a girl must enter first and the other girl must be the last one to enter, how many different ways can the athletes enter the gym?

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