Category: Physics

Is See attached a sentence? Yes; “Please see attached document” is comprehensible, and people often write it as a stock phrase, without anyone raising an objection. While you should mention when you’ve attached a document to an email, this phrase isn’t the best way to express that. How do you say attached a resume? The […]

Is the mains AC or DC? AC stands for ‘alternating current’ which means the current constantly changes direction. Mains electricity is an AC supply, and the UK mains supply is about 230 volts. It has a frequency of 50Hz (50 hertz), which means it changes direction and back again 50 times a second. What is […]

Why do waves slow down in shallow water? In shallower water near the coast, waves slow down because of the force exerted on them by the seabed. If a wave is approaching the coast at an angle, the nearshore part of the wave slows more than the offshore part of the wave (because it’s in […]

At what temperature will outside faucets freeze? 20 degrees How do I stop my outside faucet from freezing? Cover the exterior faucet with an insulated slip-on cover. This will prevent any remaining water from freezing. Exterior pipes should be wrapped with insulation tubing, which can be found at your local hardware store. Do not wrap […]

What swim goggles do Navy SEALs use? We like these simple goggles – the Aqua Sphere Goggle . These are easy to slip on and knock out a 2k swim in the pool with fins or to get out in the ocean and get some distance. The glasses will serve their primary purpose, to keep […]

What is an example of the Fifth Amendment? During a criminal trial, the Fifth Amendment pertains to more individuals than just the defendant. For example, a witness may refuse to testify if doing so would have him or her self-incriminate, even if the criminal conduct in question is not related to the actual case. Why […]

What is the main magnetic field? The Main Magnetic Field originates from a dynamo process in the fluid outer core of the Earth. It strongly dominates over the various other contributions to the geomagnetic field, accounting for over 95% of the field strength observed at the Earth’s surface. What is the strength of an MRI […]

What is the speed of the particle when it enters the magnetic field region? A proton enters a uniform magnetic field of 1.0 × 10 −4 T 1.0 × 10 −4 T with a speed of. 5 × 10 5 m/s . Why does a magnetic field do not work on a charged particle? One […]

What is the best solvent for carbon disulfide? Carbon disulfide is a colorless liquid, with an chloroform like smell when pure. Impure CS2 has a yellowish color and has a putrid smell. It is insoluble in water, but soluble in many organic solvents, such as benzene, ethanol, diethyl ether, carbon tetrachloride, chloroform. What is the […]

What is the hardest glass? Toughened glass Is Cast Iron harder than glass? Also: cast iron can’t scratch glass. Glass is much harder than iron (see this wikipedia article), glass having a 6-7 on the Mohs scale, iron having a 4. Regarding (3) melting glass top: I have, unfortunately, successfully melted a glass top range […]