In the past few million years of Mars the main source of climate variation has been the slow escape of the atmosphere. Probably true Maybe Probably false
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Algebra worksheet
Hello. My algebra teacher gave me this worksheet last week and everyone had to bring it yesterday and I haven't done it yet. Can someone please help me. He said Friday is the last day or he's going to take away some points. I've been having trouble with

Math Help Gr12
The relation between the # of time in days, D, it takes for a planet to revolve around the Sun is related to the planer's average distance from the Sun, k, in millions of kilometres is defined by log D= 3/2logk0.7 . How much longer does it take Mars than

Physics
Mars, on average, is 140 million miles from the Sun. 1 mi = 1609 m . Part #1: Express the distance between Mars and the Sun in meters using powers of 10. Express your answer using two significant figures. Answer: d =2.25×10^11 m Part #2: Express the

Science please help
List and briefly outline the six different periods into which the Paleozoic era is divided. The six periods: 1:Cambrian, which was 545 million years ago. 2:Ordovician, which was 490 million years ago. 3:Silurian, which was 445 million years ago.

math
Is the relationship between the variables in the table direct variation, inverse variation, both, or neither? If it is a direct or inverse variation, write a function to follow it. X:2 5 20 40 Y:40 20 5 2 ANSWERS AVAILABLE TO CHOSE: A) NEITHER B) INVERSE

Physics
The period of Mars' rotation is 24 hours, 37 minutes, and 23 seconds. At what altitude above Mars would a "Marsstationary" satellite orbit?

algebra
Find the variation constaant and an equation of variation where Y varies directly as X and Y = 72 hen X = 8 The variation constant is K = ? The equation of variation is Y = ? I think that K = 9 but not sure I don't have a clue about the rest.

Science
Describe the two most important events in the history of animal life that occurred at the beginning and at the end of the Paleozoic era. List and briefly outline the six different periods into which the Paleozoic era is divided. Answer: In the beginning of

Science
In a drawing that represents a scale model of the solar system, the sun is placed at the center and the planets are shown orbiting in circles around it. While in reality Mars is 1.5 AU away from the sun, in the model Mars appears at 30 cm from it. Neptune

Physics
the earth has an average distance of 225 million km (2.25x10^8 km) from Mars. what is the gravitational attraction between Mars and a 60 kg person standing on the earth? mars has a mass of 6.39x10^23 kg. Correct me if I'm wrong Fg=GmM/r^2 F=

astronomy
Mars has an albedo of 15. Given that it doesn't have much of an atmosphere, estimate the mean surface temperature on Mars. Note: the semimajor axis of the orbit of Mars is 1.52 AU. (Please enter your answer in units of degrees Kelvin)

math
XYZ Oil Company has consistently lost $8 million each year for the past 7 years. Express the total loss as an integer. A) $8 million B) $8 million C) $48 million D) $56 million

Science
What is the BEST way to discover if there is water on the surface of Mars? A) Send space probes to Mars to study the surface. B) Study the moon's surface, since it is similar to that of Mars. C) Observe the color of Mars to see if there are traces of blue.

chemistry
A 1.00g sample of carbon from a modern source gave 15.3 disintegrations per minute. A sample of carbon from an “old” source gave 920 disintegrations per hour. What is the age of the “old” sample of carbon? The halflife of carbon14 is 5.73×103

physics
I need only part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars

Finance
Rita Gonzales won the $62 million lottery. She is to receive $2.8 million a year for the next 20 years plus an additional lump sum payment of $6 million after 20 years. The discount rate is 14 percent. What is the current value of her winnings?

Climate Graphs
I need a climate graph of Fredericton, New Brunswick, Canada present time, so about 20002006. I have looked everywhere for stats or graph. I also need an older on for comparision perhaps the 1990s. Where can I find these. :( This site has climate graphs

Economics
Explain how the concepts of scarcity, choice and opportunity cost are related to the spending priorities of state government and can be illustrated by these two main areas: road construction and school classroom construction. With spending of only 300

physics
Meteorites from Mars Several meteorites found in Antarctica are believed to have come from Mars, including the famous ALH84001 meteorite that some believe contains fossils of ancient life on Mars. Meteorites from Mars are thought to get to Earth by being

Finance
Archer Daniels Midland Company is considering buying a new farm that it plans to operate for 10 years. The farm will require an initial investment of $12.00 million. This investment will consist of $2.60 million for land and $9.40 million for trucks and

astronomy
At an average opposition, the Earth and Mars are separated by 0.52 AU. Suppose an astronomer observes Mars at opposition and that seeing blurs the images to a resolution of 1.0 seconds of arc. What is the smallest surface feature the astronomer would be

physics
Mars Rover When the Mars rover was deployed on the surface of Mars in July 1997, radio signals took about 12 min to travel from Earth to the rover.How far was Mars from Earth at that time?

science
If Earth is 149.6 million Kilometers from the sun, or 93 million miles away. suppose there was an imaginary road from earth to the sun. If you were in a car traveling 100 km an hour, it would take you 1,490,000 hours or just 170 years to reach the sun. If

Science
Your rocket takes off from Earth and goes from 0 m per second to 560 m per second in the first 7 seconds of flight. What is your acceleration? Once your rocket reaches space, the captain adjusts the speed. Your captain goes from 24,000 km/hr to 17,000

algebra
The population of a particular country was 29 million in 1985; in 1997, it was 38 million. The exponential growth function describes the population of this country t years after 1985. Use the fact that 12 years after 1985 the population increased by 9

Astronomy
In the past few million years of Mars the main source of climate variation has been the slow escape of the atmosphere. Probably true Maybe Probably false

Chemistry
Earth is approximately 58.845 million miles from mars. The speed of current space shuttles is ~28,000 km per hour. At this rate, how many years would it take to travel to Mars?

science
Mars is 48 million miles from earth. If a spaceship leaves Earth traveling toward Mars at 6 million miles per hour (m.p.h.). How long will it take the spaceship to arrive on Mars.

Environmental History
A Primary source is: a) the main source that a historian uses in a given book. b) someone interviewed for a story on the Iowa caucuses. c) an especially reliable historical text. d) a record that historians use to understand a past time period.

Microeconomics
Two years ago a large corp. gegan construction on a new site. At that time, mgrs thought that production from that plant would generate over $25 million in sales. However, a more conservative and realistic estimate suggests that the new plant will only

Science
A humanoperated spaceship reaches the moon in 3 days. The moon is about 386,400 km from Earth. Mars, our closest planetary neighbor, is, at its closest, about 140 times farther away from us than the moon if Mars stays in place. Assuming a very simple

Trigonometry
A trajectory of a spaceship traveling from Earth to Mars can be expressed as the equation where the sun is the origin and is expressed in million mi. Earth is 151.1 million mi. from the sun, and mars is 211.7 million mi. from the sun. a. What type of polar

Microeconomics
A corporation began construction on a new site 2 years ago. At that time mgrs predicted the new plant would generate over $5 million in sales, however, now a more conservative estimate shows that the new plant will only generate an additional $3 million in

chemistry
A 1.00g sample of carbon from a modern source gave 15.3 disintegrations per minute. A sample of carbon from an “old” source gave 920 disintegrations per hour. What is the age of the “old” sample of carbon? The halflife of carbon14 is 5.73×103

Physics (please help!!!!)
Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

Physics (please help!!!!)
Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

Physics (please help!!!!)
Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

Physics Please help!!!
Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

Physics (please help!!!!)
Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

math
I have a math problem. A Mars year is 1.88 Earth years. If you are 13 years old in Earth years, about how would you be in Mars in Mars years? Thanks

physics
Only need help with part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth

Physics to drwl please help
Only need help with part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth

physics
I need only part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars

Finance
Rock Company acquired land 8 years ago for 2.2 million. Today it is valued at 5.8 million. Rock plans to build a new factory on the site which is estimated to cost 21.5 million plus addition building site preparation costs of 3.2 million. What is the

physicsplease help
Only need help with part canswer for part a is 2.94 radians and for b it is 777 days Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days.

Physics Question
Find the point between Mars and the Sun at which an object can be placed so that the net gravitational force exerted by Mars and the Sun on this object is zero. We are given a chart with information on the mass, etc. of planetary objects. I know to use law

Language Arts
I can't figure out the answer to this question. Which book would not help you find information about the planet Mars. A. Visitors from Mars. B. a history of Mars. C. U.S. Robots on Mars. D. A Journty to Mars Aboard Spaceship Spirit. I think the answer is

IPC
the planet mars is located 228 million kilometers (2.28x10^11m) away from the sun. if it takes the sun 760 seconds to reach mars how fast is light travelling???

Physical Science
Galaxy A is 600 million light years from earth. Galaxy B is moving away from the earth at a speed that is 80% as large as that of Galaxy A. How far from earth is Galaxy B? A. 750 million light years. B. 640 million light years. C. 540 million light years.

Algebra
The function w(x) = – 0.01x^2 + 0.27x + 8.60 can be used to estimate the number of selfemployed workers in the U.S., in millions, x years after 1980. How many selfemployed workers were there in the year 1995? A. 9.8 million B. 10.4 million C. 11.15

time value of money
The ABC Computer Corporation is considering an increase in its annual advertising expenditure from $10 million to $15 million for a fiveyear period(ie. in years 1 to 5. The marketing department estimates that the increased advertising will increase

Physics Urgent!!!!!
Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

Math
A year on Mars is 1.88 Earth years. If you are 13 years old on Earth, how old would you be on Mars? I don't know if I am supposed to multiply or divide. I also don't understand what the question is trying to state. Thanks

Finance
Company is planning to buy a machinery at a cost of $20 million. This machine will be used for 10 years. The machine will bring additional revenue as follows: $10 million for first 6 years and $7 million for the last 4 years Expenses = 60% of revenue for

astronomy
when earth and mars are closest to each other in their orbits the angular separation between mars's moon phobos and the surface of mars is observed to be 22 arc seconds. if phobos orbits mars every .31910 days what is the average density of mars expresses

Astronomy
suppose a rock's chemical composition is analyzed and is found to contain 5x more potassium atoms than argon atoms. When did the rock form? A) 10 million years ago B) 100 million years ago C) 500 million years ago D) 2 billion years ago E) 4.5 billion

Precalculus
I don't even how to go about this.... Mars is in an elliptical orbit with the Sun at one focus, as shown in the figure. At its aphelion, Mars is 156 million miles from the Sun. At its perihelion, Mars in only 128 million miles from the Sun. How long is the

maths
The variation in a population is modelled by the recurrence relation (Jn+1 0.9257 0.0208) (Jn) + (0.014) (An+1 0.0661 0.9767) (An) (0.056) where Jn and An are the sizes, in millions, of the subpopulations of juveniles and adults, respectively, n years

maths
The variation in a population is modelled by the recurrence relation (Jn+1 0.9257 0.0208) (Jn) + (0.014) (An+1 0.0661 0.9767) (An) (0.056) where Jn and An are the sizes, in millions, of the subpopulations of juveniles and adults, respectively, n years

maths
The variation in a population is modelled by the recurrence relation (Jn+1 0.9257 0.0208) (Jn) + (0.014) (An+1 0.0661 0.9767) (An) (0.056) where Jn and An are the sizes, in millions, of the subpopulations of juveniles and adults, respectively, n years

maths
The variation in a population is modelled by the recurrence relation (Jn+1 0.9257 0.0208) (Jn) + (0.014) (An+1 0.0661 0.9767) (An) (0.056) where Jn and An are the sizes, in millions, of the subpopulations of juveniles and adults, respectively, n years

maths
The variation in a population is modelled by the recurrence relation (Jn+1 0.9257 0.0208) (Jn) + (0.014) (An+1 0.0661 0.9767) (An) (0.056) where Jn and An are the sizes, in millions, of the subpopulations of juveniles and adults, respectively, n years

maths
The variation in a population is modelled by the recurrence relation (Jn+1 0.9257 0.0208) (Jn) + (0.014) (An+1 0.0661 0.9767) (An) (0.056) where Jn and An are the sizes, in millions, of the subpopulations of juveniles and adults, respectively, n years

maths
The variation in a population is modelled by the recurrence relation (Jn+1 0.9257 0.0208) (Jn) + (0.014) (An+1 0.0661 0.9767) (An) (0.056) where Jn and An are the sizes, in millions, of the subpopulations of juveniles and adults, respectively, n years

corporate finance
Archer Daniels Midland Company is considering buying a new farm that it plans to operate for 10 years. The farm will require an initial investment of $12.00 million. This investment will consist of $2.60 million for land and $9.40 million for trucks and

Astronomy
How long does it take a protostar with one solar mass to become a main sequence star? 1 or 3 or 10 or 30 or 100 million years?

Jacques Cousteau
The Antartica is the vast source of cold on our planet,just as the sun is the source of our heat, and it exerts tremendous control on our climate. How would I paraphrase that

Science
Which type of climate receives the most intense solar energy? A. grasslands climate B. tropical climate** C. polar climate D. temperate climate

Earth Science
Computer models of Earth's climate project increases in the average temperature from 2°C to 6°C by the end of the century. Have these high temperatures ever occurred before in the past 400 000 years?

Source Analysis
I have an upcoming source analysis for my mid year exam in Ancient History, and after my past few source anaylsis', I haven't had of the greatess success. If there any websites or guides that could help me anaylse sources, such as sections of text and

astronomy
A possible trajectory for sending a spacecraft to Mars is an elliptical orbit with Earth at its perihelion and Mars at its aphelion. The craft would be launched out of lowEarth orbit by a quick burst of rockets into solar orbit, and would then "coast''

Astronomy
A possible trajectory for sending a spacecraft to Mars is an elliptical orbit with Earth at its perihelion and Mars at its aphelion. The craft would be launched out of lowEarth orbit by a quick burst of rockets into solar orbit, and would then "coast''

math B30
must be answered with a series/sequences formula over the past 10 years, the number of CD's sold by a mail order music company has increased an average of 12% per year. If the company sold 1.5 million CD's ten years ago, the total number of sales they have

Earth science
In a few sentences, explain how information from paleoglaciation and paleomagnetism support the idea that continental plates have moved over the past several million years.

physics!!!!!!!!!!!!!!!!!
A few years ago, a movie came out about a soldier, John Carter, who was transported to Mars and could perform amazing feats of strength and jumping due to the lower Martian gravity. The surface gravity of Mars is 0.38 times that of earth. If John could

PHYSICS
A few years ago, a movie came out about a soldier, John Carter, who was transported to Mars and could perform amazing feats of strength and jumping due to the lower Martian gravity. The surface gravity of Mars is 0.38 times that of earth. If John could

physics
A few years ago, a movie came out about a soldier, John Carter, who was transported to Mars and could perform amazing feats of strength and jumping due to the lower Martian gravity. The surface gravity of Mars is 0.38 times that of earth. If John could

Statistics
The data below represents six years of the harvest of oranges in millions of boxes and the price per 75 pound box. (a) Plot the data and calculate the regression line. Plot that line. (b)Calculate the coefficient of determination (c)What percent of the

Finance
FIN500, Inc. has the following project. It is a 4 year project and required initial investment of $10 million. Depreciation is straightline over 4 years. Initial net working capital requirement is $1.5 million and is fully recoverable whenever the project

Geography/Sci
There are many climate zones, but my sci book has the main ones. BUT my homework was to find info on the one I'm researching. Do you know any websites that will tell me about California's climate zone? (Brown zone in Mcgraw Hill Books)

PHYSICS
Determine the value for the acceleration due to gravity at the surface of the planet Mars, given the following data: Mass of Mars = 6 .42 x 10^23 kg Radius of Mars = 3.37 x 10^6 m Thanks!

PHYSICS
Determine the value for the acceleration due to gravity at the surface of the planet Mars, given the following data: Mass of Mars = 6 .42 x 10^23 kg Radius of Mars = 3.37 x 10^6 m Thanks!

Science
According to the fossil record shown, how did the Bighorn Basin environment change from 55.85 to 55.75 million years ago? Highlight the correct answer choice. (1 point) A. Over time, less plant life covered the basin. B. Over time, more plant life covered

physics
An astronaut on the surface of Mars fires a cannon to launch an experiment package, which leaves the barrel moving horizontally. Assume that the freefall acceleration on Mars is three eighths that on the Earth.(a) What must be the muzzle speed of the

Chemistry
About twenty radioisotopes with ultralong halflives, from 82 million years (244 Plutonium) to 6 million billion years (50Vanadium) are found in the earth’s crust, yet no radioisotopes with halflives less than 70 million years (146 Samarium) are

Physics
Gravity on Mars is 1/3 of that on earth. If Mars atmosphere is only 2 km thick, what is atmospheric pressure on Mars?

Physics
Gravity on Mars is 1/3 of that on earth. If Mars atmosphere is only 2 km thick, what is atmospheric pressure on Mars?

Clocking Tectonic Plates
Explain how you could calculate the average speed of the Pacific Plate over the past five million years, then calculate the value? I tried searching the internet for this, I came up with nothing, and I just don't get this question.

physics
The planet mars has a mass of 6042e23 kg and a radius of 3038e6 m. how much would a 60 kg person weigh on Mars compared to their weight on Earth? How heavy he would feel he weighed in kg on Mars?

QRB
Complete the following two problems. Problem 1 The table shows the number of greeting cards that Americans buy for various occasions. Holiday/Event Cards Sold Valentine’s Day 900 million Mother’s Day 150 million Father’s Day 95 million Graduation 60

childcare
will someone plz help with this....thanks Provide the titles, authors, publishers, and copyright dates of two picture books concerning children with disabling conditions. The copyright dates should be within the past five years. Note: The books’

physics
You are on Mars and would like to send a probe into space so that it does not fall back to the surface. What minimum launch speed do you need? (The mass of Mars is 6.42x10^23 kg and the radius of Mars is 3.40x10^6 m) km/s Please someone also help me on

math word problem
Jim is making a diagram of the solar system. If he draws Neptune, which is 2795 million miles from the sun, 10 inches from the sun on his paper, how far away (to the nearest tenth of an inch) from the sun should he draw Mars, which is 142 million miles

Astronomy  Plantet (MARS)
For an assignment I have to research Mars. Including size, temperature and gravity. My teacher wants a summary of these. Can someone please help me shorten this wall of text into like 1 paragraph? It was 1 full page before, but I took out all the technical

Math
Solve. The population of a particular country was 29 million in 1980; in 1989, it was 36 million. The exponential growth function A=29e^kt describes the population of this country t years after 1980. Use the fact that 9 years after 1980 the population

Science
A heat island is an example of what type of climate? a. trropical climate b. microclimate c. dry climate d. polar climate

HEEEEEEELP
HI I have no idea what's Alternative energy source . Can anyone help me in giving me a defintion for it thanx An alternative energy source is an additional one that is not being used already. It depends on what source is predominant or currently being

Geography
Can someone please help me with these questions? 7. Similar climates, vegetations, or landforms can be used to divide the earth into ________ a. political regions b. formal regions c. functional regions d. census regions I'm stuck on this one 10. The

Business Finance
Rita won $60 million lottery. She is to receive $1 million a year for the next 50 years plus an additional lump sum of $10 million after the 50th year. The discount rate is 10%. What is the present value of her winnings?

check geo
todays farmers are not as tightly bound by geography and climate as they were in the past because of: a)advances in farming technology B)strict pollution controls C)a decrease in farming throughout north america d)a rise in trade deficits. 1)a canada and