Category: Physics

What is the flow rate of water through a 1/2 pipe? Assume Average Pressure. (20-100PSI) About 12f/s flow velocity Sch 40 Pipe Size ID (range) GPM (with minimal pressure loss & noise) 1/2″ .50-.60″ 14 gpm 3/4″ .75-.85″ 23 gpm 1″ 1.00-1.03″ 37 gpm Does a longer pipe have more resistance? In general, any pipe […]

Does the Firefly 2 plus get you high? “Once you master the draw, the Firefly 2 has the best vapor quality of any portable vaporizer I’ve ever used.” However, once you master the draw, the Firefly 2 has the best vapor quality of any vaporizer I’ve ever used. Full, cloudy hits (if you turn the […]

How can you remove energy from matter? Going through a phase. Adding or removing energy from matter causes a physical change as matter moves from one state to another. For example, adding thermal energy (heat) to liquid water causes it to become steam or vapor (a gas). And removing energy from liquid water causes it […]

What is the law of superposition simple definition? Law of superposition, a major principle of stratigraphy stating that within a sequence of layers of sedimentary rock, the oldest layer is at the base and that the layers are progressively younger with ascending order in the sequence. It is one of the great general principles of […]

Can you have negative magnetic field? Yes, magnetic flux can be negative. It just depends on where the field is going. Say there is a sheet and magnetic field is going through it from front to the back, we can call the flux there as positive and negative when it’s the other way round. How […]

Does the body change every 7 years? According to researchers, the body replaces itself with a largely new set of cells every seven years to 10 years, and some of our most important parts are revamped even more rapidly [sources: Stanford University, Northrup]. What controls the way you look? Did you know that your DNA […]

What is the ratio of the volume of a sphere? For a sphere, surface area is S= 4*Pi*R*R, where R is the radius of the sphere and Pi is 3.1415… The volume of a sphere is V= 4*Pi*R*R*R/3. So for a sphere, the ratio of surface area to volume is given by: S/V = 3/R. […]

What is the equation of the line through with an undefined slope? If the slope of a line is undefined, then the line is a vertical line, so it cannot be written in slope-intercept form, but it can be written in the form: x=a , where a is a constant. If the line has an […]

What is the energy of light that has a wavelength of 400 nm? Solution: From the previous problem, the energy of a single 400 nm photon is 3.1 eV. What is the minimum energy needed to remove an electron from sodium? 3.3e When light with a wavelength of 400 nm falls on the surface of […]

Do I really need a torque wrench for spark plugs? Ideally anything that has a torque value should be torqued to that value. With spark plugs the concern is not normally getting them tight enough, but instead to prevent over-tightening. On most items, you don’t need to get it to the exact torque, you just […]