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

24,970 results, page 59

marine science

how does the earth redistribute the uneven amount of solar energy received by earths surface

physics

estimate the rotational kinetic energy of earth, assuming it to be a solid sphere of uniform density

physics

Calculate the force of gravity on a spacecraft 12800 km above the earth's surface if its mass is 700 kg.

science

suppose an asteroid of radious 50m strikes the earth surface,what could be the impact of such collision

*Science*

Are meteroties large lumps of trapped rock/metal which actually reach the earth's surface?

science

if something big from outerspace hit earth, then where would it have least human impact?

physics

The force produced by Earth's gravity on a 70 kg man standing on the moon is more than 0.5 N True or False?

science

The______ is the center of the moon's shadow where the sun's light is completely blocked from view on earth.

EARTH SCIENCE

A dark gray cloud that blankets the sky and often generates precipitacion is called

Chemistry

Gas particles are not found in which layer of Earth's atmosphere? A. exosphere B. mesosphere C. thermosphere D. magnetosphere I know it's not A.

science

The moon revolves around the____. Just need to know if my answer or right or wrong. Thanks! :) earth

science

The moon revolves around the____. Just need to know if my answer or right or wrong. Thanks! :) Earth

social studies

What do you call maps thatshow features that humans have created on Earth's surface?

SCIENCE

The smallest of the earth's oceans is the _______ Ocean a) Pacific b) arctic c) indian d) atlantic e)lagon B

Astronomy and Space

Using a telescope, which planets acn be observed from Earth in a crescent moon phase?

Science

Give an example of how animal behavior would chnge if the Earth become hotter in the future.

10th grade

A metroid entering Earth's atmosphere has a speed of 70.0 km/s and a kinetic energry of 2.56 X 10^15 J. What is the mass of the meteroid?

earth science

what kind of air mass weather is likely to follow the passing of a warm front?

astronomy

Fill in the blank: The Earth may have gained its water and volatile gases from collisions with _______ .

physics

If a man weighs 853.0 N on Earth, what would he weigh on Jupiter where the acceleration due to gravity is 25.4 m/s2?

physics

If a man weighs 853.0 N on Earth, what would he weigh on Jupiter where the acceleration due to gravity is 25.4 m/s2?

Chemistry

Why are the alkali and alkaline earth metals more reactive than other elements on the periodic table?

Plate Movement

What parts of earth's interior are involved in a convection current? The mantle. Core. Is that right?

science

how do hydrogen bonds relate to the transfer off heat from the equator towards the poles of earth

english

To no man does the earth mean so much as to the soldier. what type of rhetorical device does this sentece contain

Physics

What thrust does a 350 model rocket need in order to have a vertical acceleration of 14.0 on the Earth?

English

Which of the following should NOT be capitalized? A. Europe B. the Earth C. Far East D. the South Atlantic I think it's B?

4th Grade Science

How much time will it take for Earth to reach the opposite side of the Sun?

science

how long does it take for the Earth to rotate on its axis 7 times 1day 1 week 1month or 1 year?

astronomy

the radius of earth is 4000 miles, how far would you travel in going around the equator?

Earth Science

What are FIVE tools that we use to help us extend our senses when making quantitative observations?

Physics/Science

Why would someone using a Foucault Pendulum at the equator say that Earth does not rotate?

Science

How would earth move if the sun including its gravity suddenly disappeared? Explain your answer.

science

if Earth's axis were not tilted,could any area have both a hot summer and a cold winter?

Earth Science

Describe how the principle of superposition was used in determining the relative ages of the cross-sections?

biology

briefly describe the basic characteristics that all living things on earth have in common

solid geometry...

find the area of the earth's surface within the Arctic Circle; that is, in latitude north 66° 32' N. thank you! :D

Biology 1

Briefly describe the basic characterisitics that all living things on Earth have in common.

earth science

A swimmer completed the 1,500 meter freestyle in 625 seconds. What was his average speed?

earth Geology

This is just a question that I was curious about, why do mountain belts run parallel to coastlines? Thanks

earth science

according to the condensation theory the most important factor for the formation of our planet was

Physics

How far above the surface of the earth would you have to be before your weight is reduced by 12.89%? Please Help !

Science 8R - HW Qs. Check

How long does it take the earth to rotate on its axis? my answer - 365 days right????

science

find the theoreticval value of the period of a pendulum of length 0.9 meters located on the surface of the earth.

physics

At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.60%?

Earth Science

Write a paragraph explaining the connections between plate boundaries, forces and faults.

chemistry

The escape velocity from earth is 2.5 x10^4 miles per hour. What is this speed in m/s? (1 mile 1609 m)

earth science

In what layer of the atmosphere do temperatures rise with altitude? A. Troposphere B. Mesosphere C. Mesopause D. Stratosphere is it d ?

physics

the earth is approximately sphere of radius 6.37*10^6 meter.what is its surface area in square km? what is its volume in cubic km?

Geography.

How does the tilt of the earth's axis explain changes in temperature from one season to another in the temperate zone?

Chemistry #4

How long does it take (in minutes) for light to reach Earth from the Sun, a distance of 1.589 × 108 km?

PHYSICS

At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.40%?

science

tides are caused by the force of inertia from the sun and moon acting on Earth. true or false

Physica Science

Describe the movement of the Earth based upon the perceived change in positions of the stars

Science

How will precession of the Earth's rotation axis affect the month when the Sun will be in the current constellation in the future?

physics

Earth is approximately a sphere of radius 6.37 × 106 m. What are (a) its circumference, (b) its surface area, and (c) its volume? please help

science

gravitational force decreases with distance. what does this mean for a space traveler who leaves earth in a spaceship?

social studies

How does earth climate change and tectonics plates impact Latin Americans inhabitats

PHYSICS

'if diametre of earth is reduced to half mass remains constant what is then duration of day and night'

Soil Chemistry

how is carbon dioxide different than water in terms of the behavior of each compound in Earth's atmosphere?

college physics

Calculate the angular speed of the moon if it makes a revolution around the earth in 27.3 days?

phyics

_________ was the first to show that all objects fall toward Earth with constant ____________.

Physics

Determine Centripetal Acceleration acting on the person standing at the equator? (the radius of earth is given)

Grammar

I sighed as I went down the stairs, thinking what on earth does this woman want me to do now. How do i say this correctly?

Science

True or False: Tides are caused by the force of inertia from the sun and moon acting on earth.

Science

What is the main method of heat transfer from the core to the crust of earth? A. Conduction B. Convection C. Radiation

Earth Science

18.   Which of the following is a factor that determines the composition of magma?  A. Texture B. Elasticity C. Color D. Viscosity  D or B?

7th grade science

how much work is done on an object with 25 kg on earth if it moves 13m? i really need help

math

what is the linear velocity of a point in Sydney, Australia which is at latitude 33deg 55'S. Radius of earth is 6370km.

geology

True or False: Sand dunes are one of the most stable features on the Earth's surface.

Physics

If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2?

physics

light from the sun travels 1.5x10km to reach the earth .how long does it journey take in minutes?

Selamola secondary

What is micro-organism that is regarded as non-living thing and its found only on Earth

Physics

What is the magnitude of the momentum of the 0.057-kg tennis ball when it travels at a speed of 29 m/s? Earth is the frame of reference.

earth science

state the mostly reason for the differences in the weathering rate of the three rock materials

Earth Science

Why are boats more efficient than airplanes? They use less fossil fuels to move

Science

Assume that a spacecraft can travel at the speed of 100,000 km, how many days will it take to get from Earth to Mars?

Physics

What is the angular speed of the earth as it orbits the sun a) in radians/second? b) in degrees per day?

physics

calculate angular momentum and rotational kinetic energy of earth about its own axis

science

Which sequence shows the correct order of Earth’s geologic time intervals from oldest to youngest?

earth science

What are the long-term effects of banning plastic bags, and who is impacted by this issue or problem?

policies and procedures

Could someone please suggest more procedures???? Policy: The Town of Springbank Hills will receive corporate sector sponsors for various recreation programs, community-wide events and facilities. It will state the process staff will take to seek sponsors as well as potential ...

science

How many valence electrons must a calcium atom lose to get 8 valence electrons? It must lose two electrons (the outside two "valence" electrons), then the next inner shell will have eight.

Physics

he graph of the velocity of a mass attached to a horizontal spring on a horizontal frictionless surface as a function of time is shown below. The numerical value of V is 5.48 m/s, and the numerical value of t0 is 8.97 s. a) What is the amplitude of the motion in m? b) What is ...

algebra

Factor this polynomial: F(x)=x^3-x^2-4x+4 Try to find the rational roots. If p/q is a root (p and q having no factors in common), then p must divide 4 and q must divide 1 (the coefficient of x^3). The rational roots can thuis be +/1, +/2 and +/4. If you insert these values you...

Physics

To suck water up a straw to a maximum height of 187 mm, what minimum gauge pressure must be produced in the lungs? Note that in order to be able to suck up water, the pressure in the lungs must be lower than the pressure outside by the exact amount of pressure created by the ...

guidance

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

English

Which sentence is preferable? A. A student must see their advisor before registering for the following semester. B. A student must see his advisor before registering for the following semester. C. Students must see their advisor before registering for the following semester. D...

math 117

I am having an issue solving this appendix.... Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to ...

algebra

There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50 questions. What is the fewest number of questions a ...

chemistery

how does the atmosphere change at high altitudes? Since this is not my area of expertise, I searched Google under the key words "atmosphere altitude Earth" to get these possible sources: http://en.wikipedia.org/wiki/Earth's_atmosphere http://www.grc.nasa.gov/WWW/K-12/airplane/...

math

You must be at least 48 inches tall to ride an amusement park ride, and your little sister is 30 inches tall. How many inches/must she grow before she may ride the ride? You need no more than 3,000 calories in a day. You consumed 840 calories at breakfast and 1,150 calories at...

check grammar

Core quality are qualities that belong to a person‘s nature and that characterize a person strengths. Sometimes when a core quality are a bit too much, they can dominate other qualities and so they become a pitfall instead of strength. Core quality have me learned by ...

Physics

(a).A 220-kg sleigh is pulled by one horse at constant velocity for 0.90 km on a snowy, horizontal surface, the coefficient of kinetic friction between the sleigh runners and snow is 0.27. What power must the horse deliver to the sleigh for the trip to take 9 minutes? (b) ...

english

please organize these into a paragraph ;astronaauts supposed to rest for eight hours, but too excited to rest ;astronauts easily hopped high because moon has less gravity than earth ;opened spaceship door 61/2 hours after landing ;brought back to earth some moon rocks and soil...

physics

A football kicker can give the ball an initial speed of v_0 = 27.4 m/s. In order to score a field goal, the ball must go over the cross bar that is at a height of h = 3.44 m above the ground. If the kicker kicks the ball from a point d = 42.2 m from the goalposts, find the ...

Physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.31 × 106 m/s.Find the central force acting on the electron as it revolves in a circular orbit of radius 4.95 × 10−11 m. Answer in units of N. Find the centripetal acceleration of the ...

physics

a mirror which is somewhere between the object and image, forms a virtual upright image of the object 45 cm way from the object, measured on the optical axis of the mirror. The image is the size of the object. What kind of mirror must be used to produce this image. How far ...

science

write T if the statement is true or F if it is false. a.)All the planets travel around the sun at the same speed.my answer is T. b.)The sun's gravity keeps the planets in orbit around it. my answer is F. c.)There is an asteroid belt between Jupiter and Saturn.my answer is T. d...

Physics- Elena please help!

Part of a roller-coaster ride involves coasting down an incline and entering a loop 30.0 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...

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