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 […]
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 […]
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 […]
Is everything in the refrigerator the same temperature?
Is everything in the refrigerator the same temperature? The temperature does not depend on the type of material. But, how cold something at a low temperature feels if you touch it depends on more than temperature. The coldness sensation also depends on the heat conductivity and the specific heat capacity of the material.. Why does […]
What force keeps a satellite in orbit?
What force keeps a satellite in orbit? gravitational pull Why does the mass of a satellite not affect its orbit? 2 Answers. No change will happen, as gravitational force will become half as well, so acceleration (=force/mass) will remain same. Note that the speed of a particle in a gravitational orbit does not depend on […]
What is the difference between constant current and constant voltage?
What is the difference between constant current and constant voltage? Constant voltage luminaires require a steady voltage to be supplied from the driver eg 12 or 24 Volts. For these lights the voltage is fixed by the driver but the current may vary. Constant current luminaires require a constant current to be supplied from the […]