Can the resultant of 3 vectors be zero? Answer. Three vectors are coplanar which means all three vectors are in the same plane. If direction of resultant of those two vectors is exactly opposite to the direction of the third vector. If all above conditions are satisfied, then the resultant of three vectors will be […]
What causes persistence of vision?
What causes persistence of vision? Persistence of vision works because the human eye and brain can only process 10 to 12 separate images per second, retaining an image for up to a fifteenth of a second. If a subsequent image replaces it in this period of time it will create the illusion of continuity. Where […]
What is Lambda fuel ratio?
What is Lambda fuel ratio? Lambda represents the ratio of the amount of oxygen actually present in a combustion chamber compared to the amount that should have been present in order to obtain “perfect” combustion. Thus a lean air/fuel ratio of, say, 16:1 would translate to a lambda value of 1.088. (To calculate, divide 16 […]
What does a four-stroke cycle do?
What does a four-stroke cycle do? An internal-combustion engine goes through four strokes: intake, compression, combustion (power), and exhaust. As the piston moves during each stroke, it turns the crankshaft. Do spark plugs fire every cycle? For gasoline and other non-diesel engines, spark plugs fire once every combustion cycle. Once the engine is warmed up […]
Can you over boil potatoes?
Can you over boil potatoes? 2. Don’t Overcook or Undercook the Potatoes. If they’re undercooked, you’ll have pockets of crispy potato chunks-a big no-no for classic fluffy mashed potatoes. If you overcook them they disintegrate and your potatoes will be soupy. Should you peel potatoes before boiling? Some people may prefer to peel the potatoes […]
What is time period class8?
What is time period class8? Time period of vibration The time taken by pendulum bob to complete one vibration or one oscillation is called the time period of pendulum. The time taken by a vibrating object to complete one vibration is called its time period. What comes after a Teraannum? There is a megaannum (Ma) […]
Why is elbow so important?
Why is elbow so important? In conjunction with the shoulder joint and wrist, the elbow gives the arm much of its versatility, as well as structure and durability. The elbow swings 180 degrees in one direction to extend the forearm, and it also helps turn the forearm at the point where the parallel bones in […]
Is all light polarized?
Is all light polarized? Most light sources emit unpolarized light, but there are several ways light can be polarized. One way to polarize light is by reflection. Light reflecting off a surface will tend to be polarized, with the direction of polarization (the way the electric field vectors point) being parallel to the plane of […]
How can you tell if a tornado is coming?
How can you tell if a tornado is coming? What are the Signs of a Tornado ? Cloud Base. The Cloud Base is actually and consistently rotating (EVEN IF SLOWLY). Wall Cloud. A Wall Cloud, a large LOWERING cloud formation. Dust Debris. Sudden Stop | Eerily Quiet. Intense Wind Shift. Greenish – Black Sky. Very […]
What is NADH and its function?
What is NADH and its function? NADH stands for “nicotinamide adenine dinucleotide (NAD) + hydrogen (H).” This chemical occurs naturally in the body and plays a role in the chemical process that generates energy. NADH is used for improving mental clarity, alertness, concentration, and memory; as well as for treating Alzheimer’s disease and dementia. What […]