Category: Physics

Why does polarization not occur in dry cell? Manganese oxide prevents polarisation in dry cells. – Polarization is a defect that occurs in simple electric cells due to the accumulation of hydrogen gas around the positive electrode. – MnO2 reacts with H2 and forms water as byproduct, so depolarization doesn’t occur. What is local action […]

Which of the following is an example of the Doppler effect? An example of the Doppler effect is when a police car moves past a person who is standing still. As the police car moves towards them, the pitch of the police car’s siren goes up because the sound waves get closer together in front […]

What is a qualified conclusion? Qualified conclusions are made when there are significant deviations from satisfactory performance for one or more aspects of the subject matter. What are some examples of conclusions? Sentence #1: restate the thesis by making the same point with other words (paraphrase). ~ Example: Thesis: “Dogs are better pets than cats.” […]

Is chlorine trifluoride illegal? Though it was easily produced, only about 30-tons were ever produced. The chemical’s instability and reactive properties made it incredibly dangerous to handle. Fortunately, since the war, the compound has been banned under the Chemical Weapons Convention. What is the most common use for most of the lightweight organic compounds? Answer. […]

What 3 things does thermal energy depend on? The thermal energy of an object depends on three things: 4 the number of molecules in the object 4 the temperature of the object (average molecular motion) 4 the arrangement of the object’s molecules (states of matter). The more molecules an object has at a given temperature, […]

Is NVM rude? It could be pretty rude if it seems like you are trying to dismiss something that they are interested in. For this reason, it is best to say nvm only to your friends, who would be okay with it if you accidentally offend them. Is replying K rude? According to the first […]

What are the advantages and disadvantages of microwave transmission? Microwave Radio Communications Advantages & Disadvantages Advantage: Able to Transmit Large Quantities of Data. Advantage: Relatively Low Costs. Disadvantage: Solid Objects. Disadvantage: Subject to Electromagnetic and Other Interference. Which of the following is the main advantage of microwave? At microwave frequencies , there are better directive […]

How many generations of stars are there? When new stars form, the most massive ones will die quickly, and their remnants can then participate in future episodes of star formation. It is possible that many of these atoms have been inside dozens or even 100+ generations of stars by the present time. What is the […]

Is vinegar an acid base indicator? A solution with a pH between 5 and 7 is neutral, 8 or higher is a base, and 4 or lower is an acid. Lime juice, lemon juice and vinegar are acids, so they should have turned the indicator solution red or purple color. An indicator, like anthocyanin, responds […]

What are 5 everyday items that have permanent magnets in them? Magnets Are Everywhere Fridge Magnets. White HOOK-WHT hooks holding up a few aprons on a steel door. Magnetic Cabinet Latches. Magnetic cabinet catch. Audio Speakers. Audio Speakers. Electric motors. An electric motor from a DVD drive. More Electronic Devices. Laptops have speakers, magnetic sensors, […]