Answer:
Scientific notation is the way that scientists easily handle very large numbers or very small numbers. For example, instead of writing 0.0000000056, we write 5.6 x 10-9. So, how does this work?
We can think of 5.6 x 10-9 as the product of two numbers: 5.6 (the digit term) and 10-9 (the exponential term).
Here are some examples of scientific notation.
10000 = 1 x 104 24327 = 2.4327 x 104
1000 = 1 x 103 7354 = 7.354 x 103
100 = 1 x 102 482 = 4.82 x 102
10 = 1 x 101 89 = 8.9 x 101 (not usually done)
1 = 100
1/10 = 0.1 = 1 x 10-1 0.32 = 3.2 x 10-1 (not usually done)
1/100 = 0.01 = 1 x 10-2 0.053 = 5.3 x 10-2
1/1000 = 0.001 = 1 x 10-3 0.0078 = 7.8 x 10-3
1/10000 = 0.0001 = 1 x 10-4 0.00044 = 4.4 x 10-4
As you can see, the exponent of 10 is the number of places the decimal point must be shifted to give the number in long form. A positive exponent shows that the decimal point is shifted that number of places to the right. A negative exponent shows that the decimal point is shifted that number of places to the left.
In scientific notation, the digit term indicates the number of significant figures in the number. The exponential term only places the decimal point. As an example,
46600000 = 4.66 x 107
This number only has 3 significant figures. The zeros are not significant; they are only holding a place. As another example,
0.00053 = 5.3 x 10-4
This number has 2 significant figures. The zeros are only place holders.
How to do calculations:
On your scientific calculator:
Make sure that the number in scientific notation is put into your calculator correctly.
Read the directions for your particular calculator. For inexpensive scientific calculators:
Punch the number (the digit number) into your calculator.
Push the EE or EXP button. Do NOT use the x (times) button!!
Enter the exponent number. Use the +/- button to change its sign.
Voila! Treat this number normally in all subsequent calculations.
To check yourself, multiply 6.0 x 105 times 4.0 x 103 on your calculator. Your answer should be 2.4 x 109.
On your cheap non-scientific calculator:
You will need to be familiar with exponents since your calculator cannot take care of them for you. For an introduction to rules concerning exponents, see the section on Manipulation of Exponents.
Addition and Subtraction:
All numbers are converted to the same power of 10, and the digit terms are added or subtracted.
Example: (4.215 x 10-2) + (3.2 x 10-4) = (4.215 x 10-2) + (0.032 x 10-2) = 4.247 x 10-2
Example: (8.97 x 104) - (2.62 x 103) = (8.97 x 104) - (0.262 x 104) = 8.71 x 104
Multiplication:
The digit terms are multiplied in the normal way and the exponents are added. The end result is changed so that there is only one nonzero digit to the left of the decimal.
Example: (3.4 x 106)(4.2 x 103) = (3.4)(4.2) x 10(6+3) = 14.28 x 109 = 1.4 x 1010
(to 2 significant figures)
Example: (6.73 x 10-5)(2.91 x 102) = (6.73)(2.91) x 10(-5+2) = 19.58 x 10-3 = 1.96 x 10-2
(to 3 significant figures)
Division:
The digit terms are divided in the normal way and the exponents are subtracted. The quotient is changed (if necessary) so that there is only one nonzero digit to the left of the decimal.
Example: (6.4 x 106)/(8.9 x 102) = (6.4)/(8.9) x 10(6-2) = 0.719 x 104 = 7.2 x 103
(to 2 significant figures)
Example: (3.2 x 103)/(5.7 x 10-2) = (3.2)/(5.7) x 103-(-2) = 0.561 x 105 = 5.6 x 104
(to 2 significant figures)
Powers of Exponentials:
The digit term is raised to the indicated power and the exponent is multiplied by the number that indicates the power.
Example: (2.4 x 104)3 = (2.4)3 x 10(4x3) = 13.824 x 1012 = 1.4 x 1013
(to 2 significant figures)
Example: (6.53 x 10-3)2 = (6.53)2 x 10(-3)x2 = 42.64 x 10-6 = 4.26 x 10-5
(to 3 significant figures)
Roots of Exponentials:
Change the exponent if necessary so that the number is divisible by the root. Remember that taking the square root is the same as raising the number to the one-half power.
Example:
Example:
Oops - the answer really is 4.2 x 10-3
QUIZ:
Question 1 Write in scientific notation: 0.000467 and 32000000
Question 2 Express 5.43 x 10-3 as a number.
Question 3 (4.5 x 10-14) x (5.2 x 103) = ?
Question 4 (6.1 x 105)/(1.2 x 10-3) = ?
Question 5 (3.74 x 10-3)4 = ?
Question 6 The fifth root of 7.20 x 1022 = ?
Answers: (1) 4.67 x 10-4; 3.2 x 107 (2)0.00543 (3) 2.3 x 10-10 (2 significant figures) (4) 5.1 x 108 (2 significant figures) (5) 1.96 x 10-10 (3 significant figures) (6) 3.73 x 104 (3 significant figures)
Pick your next topic:
Which of the following is one reason why some plants have specific markings?
to enable people to identify them
to identify them as sporophyte or gametophyte
to protect them from harsh weather
to camouflage them from herbivores
Answer:
B. to camouflage them from herbivores
Explanation:
i took the test
Answer:
To camouflage them from herbivores.
Explanation:
I Hope This Helps :)
Which religion swept across North Africa as a result of trade with the Middle East?
Answer:
Due to this, Islam (the main religion in the Middle East) has also spread to north Africa.
Explanation:
:)
what is Community Health explain the scope of community health
Help me please
Answer:
Community health is the way people ensure the community's health is good and is improving fast if not. The scope of community health includes community building, community promotion and certain policies. People make sure the community is well by having a club/class to talk to people from the area to see what could be improved and what is already great. Please heart or mark me brainiest ( click on the crown ) hope it helps thx.
To what extent has economic development improved the quality of peoples lives in
Nigeria? (9 marks)
Answer: addressing environmental issues that have resulted from rapid economic development, such as soil erosion, water pollution, desertification and oil spills.
Explanation:
6. Which is a cultural pattern of contemporary Russia that distinguishes it from its
communist roots?
Answer:
Russians have a new social class of wealthy business people.
Describe how using each fossil fuel affects
the environment
Answer:
Fuels such as coal, petroleum release unburnt particles in the environment. The particles result in air pollution and cause respiratory diseases such as respiratory illness, lung damage, ozone (smog) effect, reduces the ability of blood to bring oxygen to the blood cells and tissues, liver and kidney etc.
Answer:
When fossil fuel are burned , they release carbon dioxide and other greenhouse gases , which in turn trap heat in our atmosphere , making them the primary contributor to global warming and climate change.
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5. Which of these characteristics will produce the most
dense water? (type the letter in the green box)
A. High salinity, high temperature.
B. High salinity, low temperature.
C. Low salinity, high temperature.
D. Low salinity, low temperature.
"
Stop! You're done!
Click to add speaker notes
Answer:
Option B
Explanation:
The higher the solute concentration the higher is the density of the solution. Hence, water with high salinity will have high density.
Hot water has energized atoms and molecules which increase fluidity of water as viscosity is reduced. On the other hand cold water has high viscosity and hence it is denser than hot water.
Thus, Water having high salinity and low temperature will be more dense.
Deposition creates
PLS HELP ITS MORE THAN ONE
flood plains
pumice
mesas
dunes
deltas
haboobs
sandbars
steppes
Answer:
flood plains dunes haboobs
Explanation:
Federalism gives both state and national governments the power to
issue currency.
regulate trade.
raise an army.
pass legislation.
Answer:
D. pass legislation
Explanation:
Answer:
D. pass legislation
Explanation:
To increase the limited amount of flat land available for wet rice cultivation, farmers have
A. terraced hillsides of river valleys.
B. combined resources within communes.
C. planted over paths and roads.
D. cleared forests and dense vegetation.
E. cultivated seedlings in greenhouses.
I believe it's A but I'm not sure
in the middle of the oceans are large mountain ranges called
Answer:
trenches
Explanation:
Although China provided access to scarce resources, why did communes fail to improve productivity?
A. Resources remained insufficient to promote growth.
B. The program disrupted ancient land ownership patterns.
C. People worked more efficiently for themselves.
D. Infrastructure was designed to serve individual farms.
E. Coordinated crop rotation became difficult.
Answer:
I think the answer is A
Answer:
The answer is B
Explanation:
Why did many Whites and Indians leave after independence?
Why Is Winnipeg so cold? What factors affect the climate?
why is heliocentric right and geocentric wrong?
Answer:
Heliocentric is correct because it focuses on the solar system revolving around the Sun. Geocentric is incorrect because it models the solar system as revolving around the Earth, instead of the Sun.
Explanation:
:)
what are types of communication can done through mobiles
Answer:
A cell phone offers full Duplex Communication and transfer the link when the user moves from one cell to another. As the phone user moves from one cell area to another, the system automatically commands the mobile phone and a cell site with a stronger signal, to switch on to a new frequency in order to keep the link.
Explanation:
:)
plsssssssssssssssssssssssssssssssssssss
Why did the population of the world fluctuate until 1750?
Answer:
If we are talking about fluctuate in the senses of rising up and down constantly it's because many people after 1750 had lots of children and the population since has been rising rapidly. Before 1750 the population wasn't that big and many people died during childbirth as well as their child. So in conclusion it's because advanced medicine and more knowledge about childbirth were discovered and less people died during childbirth.
Explanation:
I think I explained it in there, have a great day! -ibuki
Which of the following is NOT a contributing factor to Africa's rapid rate of urbanization?
Better lifestyle
Education
Jobs
Negative population growth
Rapid population growth
Negative population growth is the factor that is NOT a contributing factor to Africa's rapid rate of urbanization. Hence, option D is correct.
What factors that affected the urbanization in Africa ?Urbanization refers to the process by which people move from rural areas to cities or urban areas. In Africa, there has been a rapid rate of urbanization in recent years, and there are several contributing factors to this trend. These factors include:
Better lifestyle: Many people are attracted to the perceived higher standard of living and greater economic opportunities in urban areas.
Education: Urban areas often have better access to education and other services than rural areas, which can also be a draw for migrants.
Jobs: Urban areas typically offer more job opportunities, which can be a major factor in attracting people to cities.
Rapid population growth: The high population growth rates in many African countries can contribute to the rapid rate of urbanization, as more people move to cities in search of opportunities.
Negative population growth, on the other hand, would have the opposite effect and could slow down the rate of urbanization, as there would be fewer people looking to move to cities.
Hence, option D is correct.
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what kind of weather comes before and after a cold front
Answer:
the weather that comes before if fall so getting cold or chilly and after the cold it gets hot so summer
Explanation:
What is the pattern of human settlement
Answer:
A human settlement is a place where people live. Settlement patterns describe the ways in which villages, towns, cities and First Nation reserves are distributed, as well as the factors that influence this arrangement.
Answer:
You may call it a village, a city or a town they are all are considered patterns of human settlements.
Explanation:
Hope this helps you as much as intended.
How do landforms of Central Asia affect where people live?
Answer:
It has made the water warmer. It provides transportation and access to water for the people.
Explanation:
True or False
The tectonic plates are floating on material that is
moving in Earth's outer core.
PLZZ HELP!!!!
Why is the rock cycle important to the recycling of material on Earth? Provide an example.
Answer:
The rock cycle is important to the recycling of material on Earth because it is a non-stop process. For example, pieces of the Grand Canyon, sediments, are carried by the wind or water, and then it gets deposited. As more sediments fall where the deposition pit is, the more rock starts to build up, and new rocks are formed.
Explanation:
Answer:
I agree with the other person
hope this helps
have a good day :)
Explanation:
The Indian Reorganization Act of 1934 led to all of the following reforms EXCEPT:
A established a system of credit for Native Americans
B. established Native Americans' right to form businesses
C. gave Native Americans the right to intertribal marriage
D. gave Native Americans training to enter the American workforce
Please select the best answer from the choices provided
Ο Α
B
D
Answer:
A i think
Explanation:
Answer:
The answer to your question is Option (A)
Explanation:
Established a system of credit for Native Americans
The term "stateless," when used in the study of world geography, would most likely be associated with which of thefollowing locations?
A. Russia
B. USA
C. Palestine
D. Japan
Need help ASAP
Answer:
C. Palenstine
Answer:
C
Explanation:
What does the map above tell us about the endemity of typhoid fever?
A. There is greater occurrence of the disease in the Western Hemisphere.
B. There is greater occurance of the disease in the Northern Hemisphere.
C. Countries located in Equatorial regions are more likely to have incidents of typhoid fever.
D. Typhoid fever is more rampant among Caucasian populations.
Answer:
C. Countries located in Equatorial regions are more likely to have incidents of typhoid fever.
Explanation:
Hope this helps
The map above tell us about the endemity of typhoid fever countries located in Equatorial regions are more likely to have incidents of typhoid fever. Thus, option (c) is correct.
What is Countries?The term countries refers to the division according to the area. The World as the divided to the particular country. The different countries are the different languages and the dress code. For example:- China, India, and the America etc. There are the different country are the different rationals and the culture.
The equatorial weather is found in low-latitude regions, or, as the name says, around the Ecuadorian parallel. It has a highly particular climate and characteristics. This characteristic adds to the thriving Equatorial Forest in the this climate class. The high temperatures are due to the region's latitude. The sun's rays fall perpendicularly in the equatorial zone, causing temperatures to climb all year.
As a result, the map above tell us about the endemity of typhoid fever countries located in Equatorial regions are more likely to have incidents of typhoid fever. Therefore, option (c) is correct.
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Please help worth lots of points
Why do some commercial farmers convert their operations to sustainable agriculture?
A. to generate higher revenues
B. to overcome the adverse effects of herbicides
C. to eliminate the need for farm machinery
D. to improve soil quality and conservation
E. to specialize in crops or livestock
Answer:Some commercial farmers are converting their operations to sustainable agriculture, an agricultural practice that preserves and enhances environmental quality. ... Second, because of adopting the international trade approach to development, subsistence farmers must grow food for export instead of for direct consumption.
Explanation:
Answer:
B.
Explanation: People have become increasing scared of GMO food, because of the health risks. Therehas become a higher demand for organic food and the farmer has to keep up to sell into the market.
During the middle ages, the city of Constantinople was
A
the largest city in the world
B
protected by high mountains and deserts
C
the holiest city to Christians
D
the home of the Pope
Answer:
A
Explanation:
what is the meaning of Albedo
Answer:
Albedo
is a measure of how much light that hits a surface is reflected without being absorbed.