New articles in Science
How to calculate average speed To calculate the average speed is not difficult. To do this, simply divide the length of the traversed path at a time. However, in practice and in solving problems sometimes arise further questions. For example,...
Science 
How to find Mars in the sky Mars is the outer planet, is the fourth planet from the Sun neighbour of the Earth, has always attracted the attention of astronomers. But to find it, you need to know not only the place...
Aviation and space 
What is a economic Informatics Economic Informatics is an application area of knowledge at the intersection of Informatics, Economics and mathematics. It is an independent discipline that is rapidly developing now.
Humanities 
How to determine the percentage of the amount The tasks for the interest you have to face not only the students. As a rule, in school assignments, we either need to find a numerical expression of a certain amount percent, or what percentage...
Math 
What is the circumference of the earth The circumference of the earth is identified based on the longest parallel is the equator. However, recent measurements of this parameter show that the common view of it is not always true.
Science 
Rocket fuel is the types and composition Propellant is the chemical mixture that is burned to produce thrust in rockets and consists of a fuel and oxidizer. Fuel is a substance that burns in combination with oxygen and releases gas to bring...
Science 
What seas wash Russia Russia is a great naval power. The total length of its Maritime borders is 37636, 6км. the country is washed by 13 seas, 12 of which belong to three of the world's oceans: Pacific, Atlantic...
Science 
How to build a plan accelerations The construction plan acceleration is one of the solutions to the problems of the status of links of the mechanism. For such constructs must be defined kinematic diagram of the mechanism and function of its...
Math 
Why can't you divide by zero Divide by zero is impossible, every schoolboy knows that, but to many it is unclear why. The reasons for this rule can be found only at the high school, and then only if you study...
Math 
How to translate the atmosphere in the bars "Atmosphere" is a unit of pressure that is not a member of the international system SI and is equal to the atmospheric pressure measured at the level of the World ocean. The exact numeric definition...
Popular 
How to grow emerald Emerald – a precious stone of a high class. Some samples of emeralds can cost more than diamond. You can meet emerald in the most exquisite jewelry. Did you know that emerald can be grown...
Science 
How to find the angle between the crossing straight lines To determine the magnitude of the angle between the crossing straight lines, you need both a direct (or one of them) moved to a new position by parallel transfer to the intersection. You should then...
Math 
How to calculate arithmetic mean Higher arithmetic - an important concept used in many branches of mathematics and its applications: statistics, probability theory, Economics, etc. Average an arithmetic can be defined as the General notion of average.
Math