How do you control heat in a building? Use light colours on the roof and external walls. Increase wall shading with verandahs, patios, pergolas or carports on North walls (this can also improve sun penetration in winter) Reduce window sizes on West facing walls. Add window shading, awnings or louvres on East, North and West […]
How does temperature change the state of matter?
How does temperature change the state of matter? A substance’s state of matter is an extrinsic property, meaning it can be changed by its environment. When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation). […]
Why are lasers banned in war?
Why are lasers banned in war? Laser weapons specifically designed, as their sole combat function or as one of their combat functions, to cause permanent blindness to unenhanced vision (that is, to the naked eye or to the eye with corrective eyesight devices) are prohibited. Are blue lasers dangerous? Blue and violet lasers can be […]
What is the best way to test a battery?
How do you fix a burnt circuit?
Does a straight wire or a looped wire have a stronger magnetic field?
Does a straight wire or a looped wire have a stronger magnetic field? That’s how a current carrying wire makes its magnetic field. The magnetic field of a loop, at certain points, is more than a magnetic field due to a straight wire for the simple reason that (as seen in the equation above) magnetic […]
When a hang fire or misfire happens immediately eject the cartridge or shell to clear the chamber?
When a hang fire or misfire happens immediately eject the cartridge or shell to clear the chamber? When a hang fire or misfire happens, immediately eject the cartridge or shell to clear the chamber. Magnum loads should be fired occasionally in all firearms to clean out the barrel. A hang fire is when the primer […]
Is velocity ratio equal to number of pulleys?
Is velocity ratio equal to number of pulleys? If a pulley system is perfectly efficient the mechanical advantage and the velocity ratio are both equal to the number of pulleys. How can I train my mind to be stronger than my emotions? Train your mind to be stronger than your emotions Podcast – Original recording […]
Can a bullet explode in your pocket?
Can a bullet explode in your pocket? But the question obviously mistakenly substitutes “bullet” for “cartridge.” Regardless, small arms cartridges are made to be safe to handle. Holding a cartridge in your hand only requires the small amount of effort to hold it against gravity. They can be made to explode by exposing them to […]
Does gym affect height?
Does gym affect height? If you’re a parent of a child under age 18, you might be wondering if the strength training workouts children are doing at the gym or as part of a sports team are stunting your child’s growth. While this concern about stunted growth seems legitimate, the good news is, your child […]