Why must the centre of the satellite orbit coincide with the centre of the Earth?
25,476 results, page 53

science
what is believed to be the first living thing on earth? 
earth science
the first manned mission to the moon was 
Physics
the work done by the earth in moving round the sun is.................. 
Geograhy
how does wind and water effect earth climate 
earth science
how do members of the biosphere affect the geosphere? 
Physics II
A man weighs 0.80 kN on Earth. What is his mass in kilograms? 
earth
compare and contrast the pros and cons of agriculture 
social studies
What is the base for the earth's hills and mountains? 
earth science
what is the tectonic setting of seattle washington? 
Physics
what propels a rocket away from the surface of the earth? 
Physics
what propels a rocket away from the surface of the earth? 
science
what layer of the earth did the chile miners reach 
science
where does horizontal sliding take place on the earth? 
Science
Which of earth's layers contains the most mass? 
space
what is the difference between the atmosphere on earth and venus 
Physical science
The acceleration due to gravity on earth 
science
which planet other than earth may be livable by humans? 
earth
Was there any magnetic pulling during the Mesozoic Era? 
Science
How did people shape the Earth? Please answer thanks 
science
why does the moon have more craters than the earth? 
earth science
what element does ammonia replenish in the soil? 
earth
what are the directions of a local wind along a shoreline 
physics
A man weighs 645 N on Earth. What is his mass? 
hawthrone
if an object has a mass of 17 kg what is approximate weight on earth 
physics
if an object has a mass of 17 kg what is approximate weight on earth 
Chemistry
I don't know why on earth I don't remember how to do this, but I can't, and it's so simple. Calculate [H+] and [OH] of a solution with a pH of 9.7 Thank you. 
chemistry
why doesnt sun attract earth towards it 
biology
What are the major reservoirs of organic carbon on earth? 
physical science
The declination of the Sun on March 21 on Earth is 
Science
What are 3 ways resources are brought up from the earth's surface? 
Physics
How do you calculate the earth's gravitational pull on astronauts? 
science
Which statement correctly describes the Sun and earth? 
earth
1.What's the heat trapping action of gases in the atmosphere? 
Science
A man has a mass of 66kg in the Earth. What is his weight? 
earth science
What are 10 facts about hurricane Isaac? 
eath science
is moon a source of earth's energy? 
social studies
How much of the earth's surface is water? 
Physics
In what way does gravity change with distance from Earth? 
SS
The water for Earth’s oceans originally came from ____. 
Physics
What is the period of a simple pendulum 83 cm long on the Earth? 
Physics
Why is the most common frame of reference Earth? 
earth science
what element was in the ocean and what color was the water 
Earth Space
Why is oxygen an imporant variable gas? 
SCIENCE (HELP)
how does the earth’s surface get heated by the sun’s radiation? 
science
what are some ways Earth is protected by its atmosphere? 
Astronomy
How far will Venus be from Earth on February 19, 2014? 
science
How does ozone gas to int get into the earth? 
science
what is the weight on earth of an object that has a mass of 17kg? 
science
which one of earth's layers has the hottest temperature? why? 
Earth Science
Please check down below. 
Physic
If your weight on Earth is 637 Newton, what is your mass in kg? 
Science
What is the atmosphere's role in the exchange of gases on Earth? 
Science
do radioactive elements occur naturally on earth 
Science
Which of Earth sprees contain most of the mass? 
science
Saturn rotation and revolution compared to earth 
Physics
How does the weight of a body varies on earth surface? 
Earth science
How do the heating of land and water compare? 
Earth science
the land will heat up the most because _____ ??? 
science
How Do the Earth's Four Subsystems Work Together? 
Geography
What happens when we move vertically upwards from the earth 
Geography
During the formation earth , from where does the water came ? 
Science
Why is the weight of an object less on the moon than on Earth? 
earth science
products that conserves resources portfolio 
science
Why are the oldest rocks on earth on continental crusts? 
science
How do the Sun, Earth, and Moon depend on each other? 
math, graphs
the number of counselors must be 1/4 of the number of campers. write a rule for the number of counselors that must be at camp. wrote ordered pairs for the number of counselors when there are 76, 100, 120, and 168 campers. 
math
can someone show me how to solve this problem. It determines that in order to sell x smartphones, the price per product must be p=2800.4x. It also determine that the total cost of producing x smartphones is given by C(x)=5000+0.6x. a. Find the total revenue, R(x). b. Find the... 
Macroeconomics
Which of the following are examples of debt overhang? Which examples are likely to lead to a cutback in spending? Explain. a. Your uncle starts a restaurants, borrowing to fund his investment. The restaurant fails, and your uncle must shut down but still must pay his debt. b. ... 
Maths
A particle rotates in a circular orbit about a point located 30cm away, with angular speed 2 rad s^1. If the angular momentum is 0.2 Js, determine the mass of the particle. I used L=mr^2 omega and got 1.11kg A constant torque of 0.2Nm accelerates the particle for 5s. ... 
Geology
Can someone please look this over and let me know if I described the Plate Tectonic Theory? Thanks. Write a 200300word summary about two historical figures and the process of mantle convection and plate movement. Two historical figures that contributed to the plate tectonic ... 
oceanography
1. How much of the total water at earth's surface is fresh water? 2. Of all the freshwater at the earth's surface, what percent is found as ice and glaciers? 3. What percent of all freshwater is groundwater? 4. What percent of the rainfall that falls on continents is returned ... 
Maths
please help me answer this question: A pilot sets to fly from B to A and wishes to set a course to offset a 32 km/h easterly wind.The aircraft can fly at the speed of 800km/h in still air. A is 256 from B in a bearing of 330 degrees. a)on what course must the aircraft be set? ... 
Data management
1) In how many ways can 12 distinct objects be separated into three equal piles? 2) In how many ways can 25 students be assigned to 4 distinguishable study groups if at least 6 students must be in each group? 3) in how many ways can 4 students be assigned to 9 class periods if... 
English help
A music conductor is one who ________. To lead one in is to ________, and abduct is to ________. Chrono means "time" so to "synchronize" means to __________. Since phon means sound, symphony must be _______. If thesis means "idea", then synthesis must mean ______. 
Physics
A place kicker must kick a football from a point 31.2 m from a goal. As a result of 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 21.3 m/s at an angle of 53° to the horizontal. By how much does the ... 
Physics
A place kicker must kick a football from a point 31.2 m from a goal. As a result of 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 21.3 m/s at an angle of 53° to the horizontal. By how much does the ... 
Statistics
Which of the following is not true about histograms? A) The bars must touch each other. B) A histogram may be symmetric or skewed depending on the selection of bin width. C) Each bin must have the same width. D) Histograms may represent categorical data. E) Histograms may have... 
biology
The (**) are my answers Which of the following is not a characteristic of life? (1 point) maintains homeostasis *** composed of cells composed of atoms carries out metabolism 2. Which of the following must be true to consider something to be alive? (1 point) It must be able to... 
Math
Find the discriminant for the quadratic equation f(x) = 5x^2  2x + 7 and describe the nature of the roots. discriminant is 144, one real root discriminant is 136, two complex roots <? discriminant is 136, one complex root discriminant is 144, two real roots If a ... 
math
You have exactly $100 to spend. You must get 100 animals. The chicks cost $0.50 each. The pigs cost $2.00 each. The sheep cost $5.00 each you must get some of each animals. How many of each animals can you get. 
College
Three(3) digit numbers can be formed from the digits 0,1,3,5,7 and 8. How many numbers can be formed without repeats. (A) if the 3 digits numbers must be divisible by 5. (b) if the 3 digits number must be a multiple of 2 
10th grade Literature
Ok, I have to answer questions on these 2 poems, and I can't figure them out... The Golf Links Lie So Near The Mill by Sarah N. Cleghorn The golf links lie so near the mill That almost every day The working children can look out And see the men at play. And the 2nd... Earth by... 
spelling
what is the answer to this analogy brother:mother::fly:???? must start with the letters scr,spr,str,or thr brother:mother:fly brother:mother::fly:???? must end with scr, spr, str, thr brother:mother::fly:???? must end with scr, spr, str, thr i don't know i need help with that ... 
finance (assumptions)
The cost of capital for common stock is ke=(d1/Po)+g. What are the assumptions of the model? A. growth (g) is constant to infinity B. The price earnings ration stay the same C. The firm must pay a dividend to use this model D All of the above are assumptions of the model I ... 
FRENCH!
Please help fix my sentences. Please keep in mind my past, present, and future tenses. You've been a great help Sra.Mme. 1.) This week, I went to my cousins house. 2.) We had a community gathering. 3.) I met so many new people. 4.) The gathering is fun. 5.) Tomorrow, I will go... 
Physics
A hydrogen atom is in its third excited state (n=4). Using Bohr theory of the atom calculate (a) the radius of the orbit, (b) the linear momentum of the electron, (c) the angular momentum of the electron (d) the kinetic energy (e) the potential energy, and (f) the total energy... 
Effective Business Communication
For effective, written business communication, writers must consider several factors: the purpose of the communication, the identity of the audience members (including their probable reactions, amount of information they already have, obstacles that must be overcome, and ... 
Socials
What effect did the highland clearances and the Irish potato famine have on canada? Do ayou know anyone of Irish or Scottish ancestry? How and when did their family come ot canada? Pretend you are a scottish or Irish farmer who must immigrate. Write a short speech to your ... 
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 ... 
physics
At what height above Earth's surface is the gravitational acceleration reduced from its sealevel value by 0.20%? At what height above Earth's surface is the gravitational acceleration reduced from its sealevel value by 2.0%? At what height above Earth's surface is the ... 
physics
A mass of 0.116 kg hangs from a vertical spring in the lab room. You pull down on the mass and throw it vertically downward. The speed of the mass just after leaving your hand is 5.60 m/s. (a) While the mass moves downward a distance of 0.04 m, how much work was done on the ... 
Physics
A 0.28kg stone is held 1.5 m above the top edge of a water well and then dropped into it. The well has a depth of 4.8 m. (a) Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone–Earth system before the stone is released? J (b) ... 
Physics
A 0.31kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.6 m. (a) Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone–Earth system before the stone is released? (b) ... 
physics (please help)
An instrumentcarrying projectile of mass m1 accidentally explodes at the top of its trajectory. The horizontal distance between launch point and the explosion is xm. The projectile breaks into two pieces which fly apart horizontally. The larger piece, m3, has three times the ... 
physics(elena)
An instrumentcarrying projectile of mass m1 accidentally explodes at the top of its trajectory. The horizontal distance between launch point and the explosion is xm. The projectile breaks into two pieces which fly apart horizontally. The larger piece, m3, has three times the ... 
Physics
Two main strategies are employed to deflect an asteroid: destruction or slowing it down by at least 425 s so that the earth can move out of the impact zone. Assume perfect inelastic collision. (a) If we know the speed of the asteroid (va), mass (ma), and the distance the ... 
physic
Charge must be present at a location in order for there to be electrical potential energy. Must charge also be present at a location for there to be electric potential? I know it's no but why? 
math
If 72 divides m, what other numbers must divide m? If 55 divides m, what other numbers must divide m? (Enter your answers as a commaseparated list.) 
Physics
A place kicker must kick a football from a point 29.0 m (= 31.7 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 17.8 m/s at an angle of 41.0o to the horizontal. By how much does the ball ... 
math
length of a piece of wood must measure between 15 and 17 centimeters and the width must measure between 9 and 11 centimeters. write a system of linear inequalities to represent the possible dimensions of the wood,in inches,given that 1 inch equals 2.54 centimeters. plz do help...