Why do we prefer carbon brushes in AC generator? Answer. The carbon brushes remain corrosion-free and thermal expansion of these brushes is very small which ensures proper contact with the slip rings. Hence, carbon brushes are preferred over copper brushes in an ac generator. How long do brushes last in a generator? The minimum brush […]
Could humans live in the Cretaceous period?
Could humans live in the Cretaceous period? No! After the dinosaurs died out, nearly 65 million years passed before people appeared on Earth. However, small mammals (including shrew-sized primates) were alive at the time of the dinosaurs. Why were cyanobacteria so special when they appeared 3.5 billion years ago? Other scientist think that cyanobacteria evolved […]
Which bacteria can survive high temperatures?
Which bacteria can survive high temperatures? Most living creatures that thrive in extremely hot environments are single-celled bacteria or archaea. These are the simplest life forms on Earth, and probably the oldest. What organism can live in the most extreme environment? archaea What animals can survive extreme weather? Here are a few examples. Emperor penguin. […]
How do you prove 3d vectors are collinear?
How do you prove 3d vectors are collinear? Three points with position vectors a, b and c are collinear if and only if the vectors (a−b) and (a−c) are parallel. In other words, to prove collinearity, we would need to show (a−b)=k(a−c) for some constant k. What is an example of a collinear? Three or […]
Which of the following is the best definition of bacteria?
Which of the following is the best definition of bacteria? Bacteria: Single-celled microorganisms that can exist either as independent (free-living) organisms or as parasites (dependent on another organism for life). The plural of bacterium. What is the purpose of bacteria? Bacteria are microscopic, single-celled organisms that exist in their millions, in every environment, both inside […]
Can you move a pencil with your mind?
Why does the temperature not change during phase changes even though energy is being added?
Why does the temperature not change during phase changes even though energy is being added? The heat is used to break the bonds between the ice molecules as they turn into a liquid phase. Since the average kinetic energy of the molecules does not change at the moment of melting, the temperature of the molecules […]
Does Dyno tuning make a difference?
Does Dyno tuning make a difference? A dyno tune commonly provides for maximum power, better drivability, good fuel economy and a smoother ride. It increases the horse power of your vehicle and returns the vehicle to stock fuel economy. It also prevents or minimizes backfire. Dyno tuning can also save you from costly repairs in […]
How many car lengths should you be?
What is the difference between pseudoscience and science?
What is the difference between pseudoscience and science? While a pseudo-science is set up to look for evidence that supports its claims, Popper says, a science is set up to challenge its claims and look for evidence that might prove it false. In other words, pseudo-science seeks confirmations and science seeks falsifications. What is another […]