What are the 4 functions of the atmosphere? Atmosphere is essential for life on Earth as it supplies oxygen, water, CO2 and some nutrients (N) to living organisms, and protects living organisms from temperature extremes and excessive UV radiation. Up to about 80 km, the composition of atmosphere is highly uniform; therefore, the term homosphere […]
What do waves carry from place to place?
What do waves carry from place to place? What is a wave? Waves carry energy from one place to another. Because waves carry energy, some waves are used for communication, eg radio and television waves and mobile telephone signals. There are many types of waves including sound waves, water waves and all the parts of […]
What are Capricorns like sexually?
What are Capricorns like sexually? Their sex is earthy and straightforward, sometimes lacking in romance and sentimentality. Sometimes Capricorn will surprise you in sex, becoming as aggressive and dominant in asking for what they want in the erotic realm as they are in their profession. Are Capricorns good in bed? That said, Capricorns also have […]
What is half a fortnight called?
What is the formula for frequency and wavelength?
What is the formula for frequency and wavelength? Frequency (f) and wavelength (λ) are joined by the equation fλ = c, where c is the speed of light. As the speed of light is constant, if you increase the frequency, the wavelength must decrease to maintain this equation and vice versa. What is the purpose […]
Is a fan mechanical energy?
Is a fan mechanical energy? A fan always uses mechanical energy, that’s why, when you turn it off, it eventually stops spinning, and it would even if it were frictionless, because the built up mechanical energy (rotational kinetic energy) gets used up from continuing to move air. What is a fact about mechanical energy? The […]
Does electricity need a complete circuit to flow?
Does electricity need a complete circuit to flow? The wires in a circuit carry the electric current to various parts of an electrical or electronic system. For electrons to do their job in producing light, there must be a complete circuit so they can flow through the light bulb and then back out. Can current […]
Can I burn paper in a fire pit?
Can I burn paper in a fire pit? Even if you forget everything else in this article, just remember this simple rule: Don’t burn anything in a fire pit other than natural wood. Do not burn paper, trash, or anything manmade. These release carbon dioxide, greenhouse gases, and a number of other toxic chemicals into […]
Why are rare earth magnets so strong?
Why are rare earth magnets so strong? Neodymium magnets are so strong because of their high resistance to demagnetisation (coercivity) and their high levels of magnetic saturation allowing them to generate large magnetic fields. Are Rare Earth Magnets bad for you? The greater force exerted by rare-earth magnets creates hazards that are not seen with […]
Why is Cobalts atomic number 27?
Why is Cobalts atomic number 27? Cobalt is atomic number 27 with element symbol Co on the periodic table. Discovery: Cobalt compounds have been used since the Bronze Age to impart a blue color to glass. Swedish chemist Georg Brandt discovered the element around 1735. Cobalt ore typically contains arsenic oxide, which poisoned miners and […]