Category: Physics

What happens when two oxygen atoms combine? When two oxygen atoms bond together to form an oxygen molecule, they share four electrons ? two from each oxygen atom. Other examples of covalent bonding are water (H2O), and carbon dioxide (CO2). Covalent compounds are usually liquids or gases with low melting points. Why do two oxygen […]

What is the point of a lightning rod? While lightning rods help protect a structure from a direct lightning strike, a complete lightning protection system is needed to help prevent harmful electrical surges and possible fires caused by lightning entering a structure via wires and pipes. Does my house need a lightning rod? Statistically, lightning […]

Are cameras more accurate than mirrors? A mirror image is called a mirror image because it reverses things from left to right. You usually see a mirror image of yourself. In contrast, if you look at a normal camera photo, you see yourself as another person would see you. Mirrors are much more accurate than […]

How is the first day of winter decided? In the United States and the rest of the northern hemisphere, the first day of the winter season is the day of the year when the Sun is farthest south (on December 21st or 22nd). This day is known as the Winter Solstice. The declination of the […]

What are renewable and nonrenewable resources class 9? What is the difference between Renewable and Non-Renewable resources? Renewable Sources of Energy are those Sources of Energy which can be renewed naturally over time. Non-Renewable Sources of Energy are those sources which are available in limited quantity.. They are inexhaustible. What are two human activities that […]

Which link is missing from this food chain? The decomposer is missing. The rabbit is the herbivore, the raspberry bush is the producer, and the owl is the consumer. The decomposer is the only thing not on there. Why are plankton important to marine ecosystems? Phytoplankton are vital to marine ecosystems. They are producers, or […]

Is electricity free in Iceland? The average monthly household electricity bill in Iceland is $20 – $30. This includes heating and water. The majority of Icelandic houses are heated by geothermal water. Iceland’s streets are heated by geothermal water so they do not become slippery in winter. How did Reykjavik get its name? Our historical […]

What is the standard form of 3500000? Hence the standard form of 3500000 is 3.5×106. How do you write 713.49 in standard form? Answer. 713.49 written in standard form​ is Seven hundred thirteen point forty-nine. What is standard form of slope intercept? Standard form is another way to write slope-intercept form (as opposed to y=mx+b). […]

What is the best ISO for night photography? 1600 How do I set my camera for night photography? Night Photography Camera Settings M – Manual mode. Shutter Speed – 30 to 60 seconds. As it’s dark, a longer shutter speed will give enough time to let a lot of light to enter the camera. Aperture […]

Who is the father of astrology? Alan Leo How much of astrology is true? Belief that astrology was at least partially scientific was 76%, but belief that horoscopes were at least partially scientific was 43%. In particular, belief that astrology was very scientific was 26% while that of horoscopes was 7%. Which planet causes death? […]