Category: Physics

How do I know my PNP and NPN sensor? Watch the meter display as you force the sensor to output. If the readout changes to a number between 10 and 30, then the sensor output is a PNP type, also known as “sourcing.” If the meter display remains at “0”, then the sensor output is […]

What is the difference between horizontal and vertical bar graphs? The title of the horizontal bar graph tells about the data being represented by the graph. The vertical axis represents the data categories. The horizontal axis represents the values corresponding to each data value. When using the bar graph the width of the bars must […]

How does stick flex affect your shot? The higher the flex number, the stiffer the hockey stick. Flex has a lot to do with how fast a player’s slap shot is. In the act of making a slap shot, the player will scrape the blade on the ice a few inches behind the puck. This […]

How is water turned into ice instantly? Sharply knock a bottle of supercooled liquid water on the table and it instantly turns to slushy ice before your eyes. You put a plastic bottle of soda pop or water in the freezer for a few minutes to get it ice cold. How long does it take […]

Who has played at the most World Cups? Soccer players with the most appearances at the FIFA World Cup from 1930 to 2018 Number of appearances Lothar Matthäus (Germany) 25 Miroslav Klose (Germany) 24 Paolo Maldini (Italy) 23 Uwe Seeler (Germany) 21 Has the US ever made it to the World Cup final? The United […]

How is flow orifice size calculated? Divide the flow of the liquid by the velocity of the liquid to determine the area of the orifice in square feet. In the above example, you would divide 8 by 2. The total area of the orifice would be 4 square feet. How accurate is a Venturi meter? […]

What is crystallization for Class 7th? Crystallization is a process by which a pure soluble substance separates out in the form of crystals from its hot and saturated solution on cooling. The process is employed in the separation of pure common salt from the impure common salt obtained from sea. What is the principle of […]

Is AB blood type dominant or recessive? ABO Blood Type Just like eye or hair color, our blood type is inherited from our parents. Each biological parent donates one of two ABO genes to their child. The A and B genes are dominant and the O gene is recessive. Why do mosquitoes bite me and […]

Who controls the money supply? The Fed Who controls monetary policy in the US? Congress has delegated responsibility for monetary policy to the Federal Reserve (the Fed), the nation’s central bank, but retains oversight responsibilities for ensuring that the Fed is adhering to its statutory mandate of “maximum employment, stable prices, and moderate long-term interest […]

What is a Fourier power spectrum? The power spectrum of a time series. describes the distribution of power into frequency components composing that signal. According to Fourier analysis, any physical signal can be decomposed into a number of discrete frequencies, or a spectrum of frequencies over a continuous range. What is voltage spectrum? VSpec calculates […]