Category: Physics

Why light shines off of a mirror? A mirror is a surface that reflects light more perfectly than ordinary objects. Most objects reflect light at varying angles. This is more accurately called refraction, because the rays of light bend when they hit the object and move off in varying directions. This allows us to see […]

What is the effect of temperature on the viscosity of liquids? The result is that liquids show a reduction in viscosity with increasing temperature. With high temperatures, viscosity increases in gases and decreases in liquids, the drag force will do the same. What is viscosity how it varies with temperature? In general, the viscosity of […]

Can a TV show make you depressed? A study in Preventative Science Reports found elevated depression levels when people spent more time on computers and watching TV. In fact, those who spent more than four hours each day staring at a screen were about twice as likely to have depression. Is binge watching bad for […]

What causes hydrogen gas to glow when an electric current is passed through it? Terms in this set (62) What gives gas-filled lights their colors? An electric current passing through the gas in each glass tube makes the gas glow with its own characteristic color. These electrons lose energy by emitting light when they return […]

Is Br2 polar or nonpolar? So, Is Br2 Polar or Nonpolar? Br2 (Bromine) is nonpolar because, in this molecule, both bromine atoms have the same electronegativity due to which both atoms have equal charge distribution and results in a net-zero dipole moment. What type of molecule is AlCl3? Aluminum chloride is a chemical compound with […]

At what temperature does the exhaust valve open? When the valve opens and exhaust gas begins to flow out from under it, the valve is heated not only on the top of its head by combustion itself but the back side of it is heated as well by exhaust gas, whose temperature can be as […]

What is the pressure at the bottom of a swimming pool that is 3 meters in depth? 29,400 pa What is the pressure at the bottom of a pool? The chart shows that 2.31 feet of water will create one PSI. So in CPO class, I ask the students: “How much pressure is at the […]

What are the five changes of state? Common changes of state include melting, freezing, sublimation, deposition, condensation, and vaporization. What are the 22 states of matter? What are the 22 states of matter? Solid. Liquid. Gas. Plasma. Bose-Einstein Condensate. Excitonium. Degenerate Matter. Photonic Matter. What are the 7 types of matter? The seven states of […]

What happens when a cell with 1% salt gets put into a 10% salt solution? It is a type of passive transport. A cell has a 1% salt concentration. It is placed into a solution containing a 10% salt concentration. Water will move out of the cell, causing it to shrink. What are examples of […]

What is the weight formula? The most common definition of weight found in introductory physics textbooks defines weight as the force exerted on a body by gravity. This is often expressed in the formula W = mg, where W is the weight, m the mass of the object, and g gravitational acceleration. Who gave the […]