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

25,359 results, page 59

Science

green house effect influences the temperature on Earth because try not to give a link

Earth Science

How long will it take for Potassium to have a 25% of oringinal radioactive product left?

maths

the radius of our plant earth is about 6400 km how far is it around the equator

science

The earth has a magnetic north and south. How does this help up with evidence to support the theory of Continental Drift?

physics

what is the acceleration due to gravity at a distance of 2 earth radii abouve earths surface?

science

On Earth, the ratio of the force (newtons) to the mass (kilograms) of an object is always the same

physics

why one cannot find the north pole of the earth using only a simple compass

physics

what device could use th earth's magnetic felds to produce energy and how it would work?

Earth-Space Science

what factors might affect the length of the rays after an impact?

Earth Science

Develop a presentation on two ways technology has built on scientific knowledge?

wireless communications

what is the period of the space shuttle traveling at 250km above the earth and what is its velocity

Earth Science to DAmon

Give positive and negative effects of climate change in Canada..

physics

what will happen to the bone structure if earth becomes more dense than its actual density?

Chemistry help

Write a descriptive text and a word equation on how silicon is extracted from earth's crust' .

Science

If there was zero change in Earth’s eccentricity, how might that affect the possibility of an ice age?

Science

Describe the apparent motion of the stars and planets that is caused by the revolution and rotation of the earth.

science

How would life be different without resources taken for under earth's surface?

Earth science

Why are so few alternative sources of energy in use in the united states today??

earth

The radius of the sun is 695 500 km What is its approximate volume written in Scientific notation?

Earth Space

What is fission? How is Einstein's theory of special relativity expressed? What does each letter stand for?

Earth Space(soon please!)

Hypothetically, how hot do you think a green star would be?

earth science

How is the decaying of radioactive uranium into lead used to date rock?

Earth Science (Geography)

In what way can the soils, geology and slopes affect river flow?

EARTH SCIENCE

When the water level of a stream or river exceeds its natural banks, it has reached its

Math

Why animals and plants are found on earth but are not on other planets of the solar system? Please ,,help me

SCIENCE

1. which of earth’s spheres contain most of its mass? A. atmosphere b. hydrosphere c. geosphere d. biosphere

surface processes on earth

What is the most significant factor that ontros yhe development of soil.

eave Earth

any one object which you would like to sell in market and prepare 5 lines on it

Earth Science

7. The original location of an earthquake is also known as the A. hotspot. B. magnitude. C. horizon. D. epicenter.

Earth Science

Explain how you could measure the density of a mineral with an exact amount of water and a scale .

Earth Science

   What element has 81 protons in the nuclei of its atoms?  A. Thallium B. Uranium C. Platinum D. Lead A?

Earth Science

12.   The original location of an earthquake is also known as the  A. horizon. B. epicenter. C. hotspot. D. magnitude. B?

PHYSICS

A hypothetical planet has a mass 1.55 times that of Earth, but the same radius. What is g near its surface?

physics

If a man weighs 820N on d earth what would be on Jupiter, where the acceleration due to gravity is 25.9m/s

Earth Science

Which of the following is NOT generally associated with a thunderstorm? A. tornado B. lightning C. dry air

earth science

What is the most abundant fossil fuel? A:Coal B:Gas C:Wood D:Oil

PHYSICS

A hypothetical planet has a mass 1.49 times that of Earth, but the same radius. What is g near its surface?

Physics

How far above the surface of the earth would you have to be before your weight is reduced by 13.52%?

Science

If the Earth was tilted so that the Arctic and the Antarctic were in the equator's location, how would it affect the climate?

science

what can you infer from the fact of all life on earth is related f you go back far enough?

miami dade

a student designed an experiment to demonstrate the interactions between earth systems

physics

How many minutes would it take a radio wave to travel from the planet Venus to earth?

physic

How fast (in meters/second) is an object moving on the earth, if its speed is specified as Mach 0.2 ?

Social science

What role do wind patterns and ocean currents play in the earth's climate? (10)

science

Why are the coldest temperatures at the 50 km height from the surface of the Earth, occur generally at tropical tropopause?

Physics

I am curious how the earth work as an omnipresent conductive surface in an electrical distribution system?

Science

Which terrestrial planet has an atmosphere similar to Earth's? Mars* Venus None of the above

Physics

In projectile motion the acceleration at the highest point of curved motion is___. a. 0 b. g c. undefined d. –g Which is true about an object was dropped from a 5 storey building? a. initial velocity is zero b. acceleration is equal to –g c. displacement is negative d. All...

Chemistry

Ok I think I figured this out but im not sure if its right please help. Thanks(= Determine the oxidation number for nitrogen in each of the following a)NH3 = -3 b)NO2-1 = 2 c)N2= 2 d)NO2Cl= 2 e)N2H4= 2 The first one is right. All must add to zero for a compound OR to the ionic...

Chem II

2.5 mol NOCl(g) was placed in a 2.50 L reaction vessel at 400 degrees C. After equilibrium was established, it was found that 28% of the NOCl had dissociated according to the equation: 2NOCl(g)<-->2NO(g)+Cl2(g) Calculate the equilibrium constant, Kc, for the reaction. ...

Physics

Astrology, that unlikely and vague pseudoscience, makes much of the position of the planets at the moment of birth. The only known force a planet exerts on earth is gravitational. (a) Calculate the gravitational force exerted on a 4.00 kg baby by a 90 kg father 0.200 m away at...

Math

Create a container to store extra shirts and hats. Some shirts and hats get sold and no one comes to pick them up. They must be stored for next year. What size cylinder do I need to hold a volume of 800 in3 of shirts and hats(The cylinder must hold that volume), how do you ...

Physics

The orbit of a Moon about its planet is approximately circular, with a mean radius of 2.24 × 10 8 m. It takes 35.5 days for the Moon to complete one revolution about the planet. Find the mean orbital speed of the Moon. Answer in units of m/s Find the Moon’s centripetal ...

calc

find the values of a nad b if the function f(x)=2x^3 + ax^2 + bx + 36 has a local max when x=-4 and a min when x=5 First you calculate the derivative: f'(x)=6x^2 + 2ax + b (1) At the local maximum and minumum f' is zero. If a polynomial is zero at some point p, then it must ...

LA

Be still, sad heart! and cease repining; Behind the clouds is the sun still shining; Thy fate is the common fate of all, Into each life some rain must fall, Some days must be dark and dreary. Which type of context clue helps you understand the meaning of the word repining? A. ...

Inorganic chemistry

Calulate E naught cell for the reaction below 5 Cd(s) + 2 MnO4^-(aq) + 16H+(aq)+ 2 Mn2+(aq) + 8 HxsO(l) The oxidation anode must be 5Cd(s) ==> 5Cd2+(aq) +10e^- The reduction cathode must be 2MnO4^- + 16H2^=(aq) + 10e^- ==> 2Mn2+(aq) + 8H2O E naught cell = E naught ...

Science

Cassie is writing an equation to show the effect of gravitational pull of the sun and moon on tidal range which equation would Cassie use to show the effect of the sun and the moon on Spring tides? A - sun + moon = spring tides B - sun + Earth = spring tides C - moon - sun = ...

Science

Cassie is writing an equation to show the effect of gravitational pull of the sun and moon on tidal range which equation would Cassie use to show the effect of the sun and the moon on Spring tides? A - sun + moon = spring tides B - sun + Earth = spring tides C - moon - sun = ...

Business English

Exercise Guideline:Assume that your readers are at about the 10th grade level in education. Revise these sentences for easy communication to this audience. 1. we must terminate all deficit financing. 2.we must endeavor to correct this problem by expediting delivery. 3. A ...

sociology

Focus of the Research Paper Select one social institution family, health-care, religion, education, mass media, political, or economic (family being my choice) as defined in the text. Using the three Sociological theories listed in chapter one of the text (Functionalism, ...

Grammar

Write three sentences that use an apostrophe correctly. One sentence must use an apostrophe with a plural noun that ends in "s". The other two sentences must use the apostrophe in two different ways. 1. Tom’s room is unorganized. 2. I believe Americans’ should never use ...

computer programming

Create the logic for a program that accepts input values for the projected cost of a vacation and the number of months until vacation. Both values must be greater than zero. Pass both values to a method named displaySavingsAmt(cost, months) that displays the amount you must ...

math

You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on Earth also varies according to the elevation of the object? In particular, the weight of an ...

Statistics

The Tyco Video Game Corporation finds that it is losing income because of slugs used in its video games. The machines must be adjusted to accept coins only if they fall within set limits. In order to set hose limits, the mean weight of quarters in circulation must be estimated...

physics

Part of a roller-coaster ride involves coasting down an incline and entering a loop 27.0 m in diameter. For safety considerations, the roller coasters speed at the top of the loop must be such that the force of the seat on a rider is equal in magnitude to the rider’s weight...

Calculus

Let f be a function defined for all real numbers. Which of the following statements must be true about f? Which might be true? Which must be false? Justify your answers. (a) lim of f(x) as x approaches a = f(a) (b) If the lim of f(x)/x as x approaches 0 = 2, then f(0)=0. (c) ...

Fashion design

Why is understanding the customer vital to creating the right brand identity? The brand is determined by the customer’s identity. The brand must appeal to all customer types. The brand makes customers engage in forecasting. The brand must appeal to the target customer. D?

Physics

A particle moves along a circular path over a horizontal xy coordinate system, at constant speed. At time t1 = 4.80 s, it is at point (4.40 m, 6.20 m) with velocity (3.70 m/s) and acceleration in the positive x direction. At time t2 = 11.0 s, it has velocity (–3.70 m/s) and ...

PHYSICS1

A particle moves along a circular path over a horizontal xy coordinate system, at constant speed. At time t1 = 4.90 s, it is at point (5.30 m, 5.30 m) with velocity (2.20 m/s) and acceleration in the positive x direction. At time t2 = 14.0 s, it has velocity (–2.20 m/s) and ...

physics

A particle moves along a circular path over a horizontal xy coordinate system, at constant speed. At time t1 = 4.60 s, it is at point (4.30 m, 6.20 m) with velocity (3.30 m/s) and acceleration in the positive x direction. At time t2 = 13.0 s, it has velocity (–3.30 m/s) and ...

IPC

The latent heat of vaporization of ethanol is 200 calories/gram. This means that _____. a) about 200 calories of heat must be added to 1 gram of ethanol to change its temperature b) about 200 calories of heat must be added to 1 gram of ethanol to convert it from a solid to a ...

physics

Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.78x1011 m apart. The larger of the two stars has a mass of 4.19x1030 kg, and its center is 1.75x1011 m from the system's center of mass. What is the mass of the smaller star?

Math(1 question plz help thanks!=D

if two integers have the same absolute value which of the following is true about the integers? A. they must be the same integer B. they must be the opposite integer*** C. they could be the same or opposite integer (plz help my answer is with the***sign thanks!=D

Physical Science

My homework is to do some exercises on the Foucault Pendulum. I'm stuck on several of the problems. One is to find the approximate angle of rotation of the earth in one day at our latititue, which is 39.9. I found the equation n = 360 sin of latitude, but I have no idea how to...

Physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.41 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.92 × 10−11 m. Answer in units of N. i used 9.10938188 × 10-31 as my mas and ...

HELPPPP NOOWW !!!!!

Type the pronoun that correctly completes the sentence. Remember that you must spell your answer correctly to receive credit. Yes, the one who designed the house was (she, her). (Points : 1) Question 2. 2. Type the pronoun that correctly completes the sentence. Remember that ...

kw university

You want to get an idea of the magnitude of magnetic fields produced by overhead power lines. You estimate that a transmission wire is about 11 above the ground. The local power company tells you that the line operates at 16 and provide a maximum of 83 to the local area. ...

Single Room, Earth View by Sally Ride--Help!

This regards the story "Single Room, Earth View" by Sally Ride. Choose one of the following quotations; then in a few paragraphs, discuss how Sally Ride's observations support or refute the quotation. Quotations: 1. "Observation is a passive science, experimentation is an ...

Chemistry

The general statement: "like dissolves like" means: identical compounds will dissolve to form a solution. one stronger component must beak down the weaker component. liquids will only dissolve in liquids. solid will dissolve in liquids. the components of a solution must have ...

PHYSICS

A long-straight wire carries a current and is aligned with the North-South direction. You place a compass 4 cm directly above the wire and above the North/East/South/West plane. The compass needle, which initially pointed North (far away from the wire) is now deflected by 20o ...

calc

one more question!! what values of c deos the polynomial f(x) = x^4 + cx^3 + x^2 have two inflection points? one inflection point? At the inflection point, the slope of the curve is zero. Find the dervative of f(x) and set it equal to zero. For certain values of c, there will ...

physics

It has been suggested, and not facetiously, that life might have originated on Mars and been carried to Earth when a meteor hit Mars and blasted pieces of rock (perhaps containing primitive life) free of the surface. Astronomers know that many Martian rocks have come to Earth ...

Physics

1. The problem statement, all variables and given/known data The asteroid Icarus, though only a few hundred meters across, orbits the Sun like the other planents. Its period is about 410 d. What is its mean distance from the Sun? 2. Relevant equations Keplers Law T_1 ^2 / T_2...

Physics

A river flows due south with a speed of 2.00 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4.20 m/s due east. The river is 800 m wide. What is the magnitude of his velocity relative to the earth? got it....4.65 m/s What is the direction ...

Physics

If two identical bowling balls are raised to the same height, one on Earth, the other on Mars, which has the larger gravitational potential energy increase? A)The bowling ball on Mars will have the larger gravitational potential energy. B)Both balls will have the same ...

science

how the earth rotates by itself? Momentum imparted to it million of years ago when the solar system formed. One theory involves glancing collision with a large asteroid millions of years ago that also broke off material that eventually developed into the moon. I hope this ...

physics!

A place kicker must kick a football from a point 36 m from the goal, and the ball must clear the crossbar, which is 3.05m high. When kicked, the ball leaves the ground with a speed of 20.0m/s at an angle of 53 degrees to the horizontal. a. by how much does the ball clear or ...

Chemistry

Select the two conditions that must be met by a thermochemical equation so that its standard enthalpy change can be written as ÄfH°. a) One mole of each reactant is used. b) All substances are at 0°C and 1.013x105 Pa pressure. c) The reactants are found in their standard ...

physics

One of the tenets of the pseudoscience (i.e., "false science") of astrology is that, in some mysterious way, the positions of the planets at the time of a person's birth somehow influence the characteristics of that person. To see if this proposition seems plausible, let us ...

L.A.

Be still, sad heart! and cease repining; Behind the clouds is the sun still shining; Thy fate is the common fate of all, Into each life some rain must fall, Some days must be dark and dreary. –from “The Rainy Day” by Henry Wadsworth Longfellow In the excerpt, what type ...

science

can u explain the wter cycle for me ? i wonder what precipitation means? http://www.onelook.com/ Type precipation in that window http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Watercycle.shtml

Math

Solve the given equation in the interval [0,2 pi]. Note: The answer must be written as a multiple of pi. Give exact answers. Do not use decimal numbers. The answer must an integer or a fraction. Note that pi is already provided with the answer so you just have to find the ...

Math(algebra)

If you had to start and finish at the same line of a racetrack, which lane would you choose? The inside lane has an obvious advantage. for a race to be fair, runners in the inside lanes must be given head starts. Design a four-lane oval track with straightaways and ...

Math statistics

For a certain computer program a password must be exactly 5 characters long. The first character must be a mnber 0-8, the second, third and fourth character can either be one of the 26 letters or a number 0-5, the fifth character has to be exactly the same as the second ...

Algebra 1

What is the solution to the system? use elimination . -18.6x+ 17.2y=90.2 14.2x+ 3.4y= -35.8 a.(3,2) b.(-3,2) c.(2/3,4/9) d.(2,3) IS IT D?? Terry and ed start a lawn mowing business and purchase mowers and equipment for $800. They charge $20 for each lawn and $4 worth of gas ...

Algebra 1

What is the solution to the system? use elimination . -18.6x+ 17.2y=90.2 14.2x+ 3.4y= -35.8 a.(3,2) b.(-3,2) c.(2/3,4/9) d.(2,3) IS IT D?? Terry and ed start a lawn mowing business and purchase mowers and equipment for $800. They charge $20 for each lawn and $4 worth of gas ...

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 ...

LA - help, thnx

Which of the following quotes from the text best reveals Windrider’s approach to living? a. “I don’t know much about being a father.” b. “It’s hard to put things into a letter, especially when the letter is read to your family by another person.” c. “Then ...

geology

1. What fraction of the Earth is made up of each of the major compositional layers: core, mantle, and crust? 2. What cities lie the same distance from our town as the boundaries of the following layers in the Earth lie from the solid surface? a. Base of oceanic crust or top of...

scientific notation?

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...

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