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This characteristic is created by repeating positive shapes in space surrounded by negative areas of space.?
rhythm
Explain why it is not possible to take a square root of a negative number?
Actually, it is. It just depends within what set you are doing your calculation, that is, what do you consider an "acceptable solution". The question of the square root means, which number, when squared, gives a specific number. Within the real numbers, the square of a positive number is positive, the square of a negative number is also positive. Therefore, there are no real numbers whose square is negative. Within the complex numbers, the square root of -1, for example, is i (the "imaginary unit") - that is, i2 = -1. Similarly, the square root of -4 is 2i, the square root of -9 is 3i, the square root of -2 is (square root of 2 times i), etc. In some areas, complex numbers are acceptable as solutions, in other areas, they are not. In the same vein, negative numbers are acceptable as solutions to certain problems, but not for certain other problems.
What are some of the everyday uses of negative numbers?
Temperature in cold areas are negative. Below sea level is negative altitude. Degrees left on the world coordinates.
What is the positive and negative of internet on education?
There are several positive and negative impacts of the Internet on education. For rural areas especially, the access to information that the Internet offers is an incredible positive force, allowing almost anyone to find the answers to basic questions simply and easily. It helps education in that when someone is curious about something (and therefore open to learning), they can find out some information to feed that "learning hunger" immediately. If you are curious about the ants in the backyard, or want to know more about dinosaurs or mythology... there is a wealth of information at your fingertips and you can enhance your knowledge.
Dose a positive pressure drain need a trap?
A trap on a positive drain is used to avoid the 'contaminated' air in a HVAC system from traveling through the condensate line and entering into areas where it is unwanted. The trap becomes necessary when one condensate line is used for multiple units, especially if it is tied to other negative pressure drain traps. The negative pressure drain traps may not drain properly if they have to overcome the positive non- trapped pressure of another unit. It allows the condensate to drain more evenly, as well. Without a trap, the positive pressure from the unit can blow air through the drain with the water and cause 'spitting.' A trap on a positive pressure system may not always be necessary, but it is good practice to trap every drain and trap it properly. There are guidelines for both positive and negative pressure traps. Always follow the manufacturers recommendations.
