What is the purpose of mitosis and meiosis? The goal of mitosis is to produce daughter cells that are genetically identical to their mothers, with not a single chromosome more or less. Meiosis, on the other hand, is used for just one purpose in the human body: the production of gametes—sex cells, or sperm and […]
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 […]
Why is it called km per hour?
What are fundamental units give example?
What are fundamental units give example? For example, in the SI system the fundamental units are the metre, kilogram, and second. ‘SI (Système Internationale d’ Unites) uses seven different fundamental units, the meter, kilogram, second, ampere, kelvin, candela, and mole. ‘ What is Watt formula? The formula for calculating wattage is: W (joules per second) […]
Which of the following statement is correct about the magnetic field lines?
Which of the following statement is correct about the magnetic field lines? Magnetic field lines are continuous curves. It originate from north pole and terminate on south pole. But inside the magnet it moves from south pole to north pole forming a closed loop. So, there is no any origination or termination point like electric […]
What is the horizontal velocity of a projectile?
What is the horizontal velocity of a projectile? The horizontal velocity of a projectile is constant (a never changing in value), There is a vertical acceleration caused by gravity; its value is 9.8 m/s/s, down, The vertical velocity of a projectile changes by 9.8 m/s each second, The horizontal motion of a projectile is independent […]