Category: Useful tips

How deep can a human survive underground? This limits habitation to about 3500 meters in a seismically stable area. Assuming surface conditions are hazardous or downright toxic, ventilation from surface points would be at least as costly as recycling used air through CO2 scrubbers to detoxify and re-oxygenate it. How far under ground do you…

How do I reset my Canon Pixma iX4000? While holding the power button, press the Resume / Cancel button 2 times, then release both the Power and Resume / Cancel buttons. When the Power LED lights in green, press Resume / Cancel button 4 times to reset the waste ink counter Canon Pixma iX5000 /…

What makes a business an employer of choice? In plain terms, being an employer of choice means establishing a business that is a great place to work. If companies don’t genuinely act to become an employer of choice then good employees will simply vote with their feet and move to a forward thinking employer who…

Why do peacocks have big tails? Darwin’s theory of sexual selection says that nature’s extravagances — like the peacock’s tail — are advantages in the mating game. This makes sense in evolutionary terms — the largest tail would indicate a healthy bird and a better chance for healthy offspring. How has a peacock’s tail evolved?…

What is the main use of selenium? The biggest use of selenium is as an additive to glass. Some selenium compounds decolourise glass, while others give a deep red colour. Selenium can also be used to reduce the transmission of sunlight in architectural glass, giving it a bronze tint. Selenium is used to make pigments…

How do I print a list of prime numbers? Python Program to Print all Prime Numbers between an Interval #Take the input from the user: lower = int(input(“Enter lower range: “)) upper = int(input(“Enter upper range: “)) for num in range(lower,upper + 1): if num > 1: for i in range(2,num): if (num \% i)…

Can you build an island in the middle of the ocean? Originally Answered: How do you make an artificial island in the middle of the Ocean? It’s not practical. Essentially, you have to build a mountain on the ocean floor and keep building it up until you reach the ocean surface. It would be taller…

What three animals make a platypus? The platypus is among nature’s most unlikely animals. In fact, the first scientists to examine a specimen believed they were the victims of a hoax. The animal is best described as a hodgepodge of more familiar species: the duck (bill and webbed feet), beaver (tail), and otter (body and…

Can a manager put a pitcher back in the game? A coach may decide to swap his starting pitcher and another player in the field to get the last few outs of the third inning in order to preserve his starter’s pitch count. As long as that pitcher moves to another position in the field,…

What must you look for and analyze in a work of art? The first thing you should do when analyzing an artwork is to break it down in terms of the visual elements. What do you see in terms of lines, shapes, colors and textures? By doing this, you will be able to objectively analyze…