Category: Physics

What is the Centre of pressure on an aerofoil? Center of Pressure The center of pressure is the point where the total sum of a pressure field acts on a body. In aerospace, this is the point on the airfoil (or wing) where the resultant vector (of lift and drag) acts. What happens to the […]

How do photographers use strobes? You simply punch two numbers into the light meter that you set your camera for (shutter speed and ISO). Then you ‘fire’ your strobe light while holding the light meter in front of your subject. The light meter will display an aperture number. What light is used to reduce shadows? […]

Why can you safely hold your bare hand in a 200 ◦ C oven for a few seconds? The air that immediately exits the oven as you open it indeed has 200°C. But cannot be in contact with your hand for more than a few moments since it raises quickly. This is way to short […]

Can you hear a plane at 20 000 feet? Yes, depending on the type of plane, which would determine how loud it is and what the frequency of its sound output was, in normal cruising flight. How far can you hear a jet? Aircraft noise is also affected by humidity, air density and cloud cover. […]

What happens if the solvent line reaches the top of your TLC plate? Once the solvent front reaches to top of the plate, the Rf value can not be determined accurately. If this were to happen, the Rf values from the TLC plate would be different from a TLC plate that was stopped before the […]

Is CL more electronegative than C? Check out boron: it’s less electronegative than hydrogen [2.0 vs. 2.2]….Carbon is More Electronegative Than You Think. Element Electronegativity (Pauling) F 4.0 [3.98] O 3.4 [3.44] Cl 3.2 [3.16] N 3.0 [3.04] Who is more electronegative N or CL? Nitrogen is more electronegative than Chlorine. FON- Fluorine Oxygen Nitrogen […]

What is the mass of 0.500 moles of nickel? Group 4: Fun with Moles! Word Problem Answer Vampires What is the mass in grams of 0.850 mol of mietnerium? 227.8 g Smell What is the mass in grams of 19.67 mol of gallium? 1,371.5 g Very What is the mass in grams of 10.5 mol […]

Which type of shower is best? Electric showers Can I use a thermostatic shower with a combi boiler? CAN YOU USE A THERMOSTATIC SHOWER WITH A COMBI BOILER? The simple answer is – yes. It’s possible to fit a thermostatic shower with a combi boiler and they’re reliable across most thermostatic showers. Mini valve, maxi […]

Is walking resistance training? Walking is great cardio but you also need strength training to balance it out. While there are a lot of dynamic duos in the fitness world, one stands out as a low-impact, high-benefit option accessible to almost everyone — walking and strength training. Are squats resistance training? Squats are typically seen […]

What is the important of fuse? A fuse(s) is needed in any electrical system (AC or DC). These protection devices react to the amount of heat being produced by electricity passing through wires and/or components. They are used so as to protect wires and components from the extreme heat produced should there be an electrical […]