What does the orange and white buoy mean? These special-purpose buoys have orange symbols on white pillars, cans, or spars. They are used to: Give directions and information. Warn of hazards and obstructions. What side do you pass a red buoy on? right What color is a marker that indicates safe water? Safe Water Markers: […]
What are the problems with DNA evidence?
What are the problems with DNA evidence? DNA evidence is only as reliable as the procedures used to test it. If these procedures are sloppy, imprecise, or prioritize particular results over accuracy, then the so-called “DNA evidence” they produce cannot be a trustworthy basis for a conviction. What are the 4 basic steps of DNA […]
Why is there no refraction at 90 degrees?
Why is there no refraction at 90 degrees? When the refraction of light occurs, the incident light rays bend. If the incident light ray is incident at 900 degrees, this means that it is parallel to the normal and it cannot bend away or towards it. If the light ray doesn’t bend then refraction doesn’t […]
Will we ever be able to travel faster than light?
Will we ever be able to travel faster than light? Albert Einstein’s special theory of relativity famously dictates that no known object can travel faster than the speed of light in vacuum, which is 299,792 km/s. This speed limit makes it unlikely that humans will ever be able to send spacecraft to explore beyond our […]
Is the moon dying?
Is the moon dying? The moon isn’t “dead” after all. Newly discovered ridges on the moon’s surface are leading scientists to think that the moon might have an active tectonic system. These ridges, speckled with boulders, could be evidence that, not too long ago, tectonic activity broke apart the moon’s surface. Is Moon cracked? In […]
How many types of flux does a transformer have?
How many types of flux does a transformer have? There are basically two main types of transformers step-up transformer which converts a low input voltage into high output voltage and step-down transformer which converts high input voltage to low voltage. Transformers are used for regulating AC current, rectification, battery charging, etc. How can flux leakage […]
Is liquid a good conductor of electricity?
Is liquid a good conductor of electricity? Substances which allow easy flow of electric current through them are known as electrical conductors. Metals, graphite and certain liquids are a few examples of good conductors of electricity. What liquids are non conductive? Pretty much any oil or organic liquid is non-conducting. These include: Mineral oil. What […]
Is GDP a good measure of the economy?
Is GDP a good measure of the economy? GDP is an accurate indicator of the size of an economy and the GDP growth rate is probably the single best indicator of economic growth, while GDP per capita has a close correlation with the trend in living standards over time. What are the 4 main limitations […]
What type of relationship exists between the length of wire in the resistance if all other factors remain the same?
What type of relationship exists between the length of wire in the resistance if all other factors remain the same? What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? Resistance is directly related to length. What type of relationship exists between the length […]
What are the 4 methods of heat loss?
What are the 4 methods of heat loss? The body loses heat through: Evaporation of water from your skin if it is wet (sweating). Radiation (similar to heat leaving a woodstove). Conduction (such as heat loss from sleeping on the cold ground). Convection (similar to sitting in front of a fan or having the wind […]