Category: Physics

What terms define a ray? In geometry, a ray can be defined as a part of a line that has a fixed starting point but no end point. It can extend infinitely in one direction. On its way to infinity, a ray may pass through more than one point. The vertex of the angles is […]

What stage of sleep is the lightest? N1 (Stage 1) – The lightest stage of sleep, when you are between being awake and asleep. N2 (Stage 2) – When you fall more soundly asleep, and become unaware of your surroundings. In which stage of sleep do sleepers spend the most time? We spend the most […]

What are good pressures for 404A? R404a Refrigerant Pressure Chart Temperature (Fahrenheit) Temperature (Celsius) R404a Pressure – 40°F – 40°C 4.3 psi – 35°F – 37.2°C 6.8 psi – 30°F – 34.4°C 9.6 psi – 25°F – 31.7°C 12.7 psi Can you mix R-22 and R-407C? It should not be mixed with R-22 or any […]

What is the formula of water equivalent? Equivalent Water = Mass x Specific Heat It is also possible to describe the water equivalent of a given body as the mass of water whose heat capacity equals the heat capacity of a given body. What is SI unit of water equivalent? The product of a mass […]

What is the density of water at 18 degrees Celsius? 1.0024 How do you calculate water density? The mass and size of the molecules in a liquid and how closely they are packed together determine the density of the liquid. Just like a solid, the density of a liquid equals the mass of the liquid […]

How the path of the alpha particle shows whether the nucleus is positive negative or neutral? Because an alpha particle has no electrons to balance the positive charge of the two protons, it has a charge of +2 and can be represented as He2+. A single alpha particle, ejected at high speed from a nucleus, […]

Can hydrogen gas kill you? Pure hydrogen will not kill you. A lack of oxygen will kill you. A lack of oxygen will kill you. Breathing pure hydrogen has the same effect as breathing pure helium: a lungful will do nothing worse than make your voice higher-pitched, but a few lungfuls will asphyxiate you from […]

What animal can live forever? jellyfish Turritopsis dohrnii Does dying of old age hurt? Reality: Pain is not an expected part of the dying process. In fact, some people experience no pain whatsoever. If someone’s particular condition does produce any pain, however, it can be managed by prescribed medications. Myth: Not drinking leads to painful […]

Why do you repeat experiments 3 times? Repeating an experiment more than once helps determine if the data was a fluke, or represents the normal case. It helps guard against jumping to conclusions without enough evidence. The number of repeats depends on many factors, including the spread of the data and the availability of resources. […]

What would happen if electric switches are made with thermoplastics? Answer. Thermoplastic materials soften under high temperatures and harden when cooled. Since electric current produces high temperatures, these materials would soften and on cooling, would not recover introductory shape or outline. This would cause defects in their functioning. What is the main function of a […]