Category: Physics

What is the SI unit of circular motion? It’s meter per second square. What are 2 types of circular motion? TYPES OF CIRCULAR MOTION There are two types of circular motion :-  Uniform circular motion :-Uniform circular motion can be described as the motion of an object in a circle at a constant speed. […]

What is the equation for heat of reaction? ΔHº = ∑ΔvpΔHºf(products) – ∑Δ vrΔHºf(reactants) so this means that you add up the sum of the ΔH’s of the products and subtract away the ΔH of the products: (-275.2kJ) – (-393.509kJ + -241.83kJ) = (-275.2) – (-635.339) = +360.139 kJ. Endothermic, since a positive value indicates […]

Which is the base quantity? A base quantity is a physical quantity in a subset of a given system of quantities that is chosen by convention, where no quantity in the set can be expressed in terms of the others. The ISQ defines seven base quantities. The dimension of a physical quantity does not include […]

What happens within the nucleus in order for an atom of polonium-211 to decay? Question: What Has To Happen Within The Nucleus In Order For An Atom Of Polonium-211 To Decay? Upon Decomposition Po-all Produces Lead-P62 Aada Alpha Particle. The Polonium-211 Nucleu Disintegrates With The Emission Of A The Nuc The Half-life Of Po-211 Is […]

What happens if volume decreases? When there is a decrease in volume, the equilibrium will shift to favor the direction that produces fewer moles of gas. When there is an increase in volume, the equilibrium will shift to favor the direction that produces more moles of gas. What happens if you reduce the volume of […]

What is the valley of a wave called? A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point in a cycle. What type of waves Cannot be transmitted through empty space? For […]

How can we change voltage? Voltage on an AC system is easily changed using transformers. Also, by fixing the voltage we have all the loads in parallel, so that all loads are at the same voltage, and each draws its own current. If we fixed the current, all of the loads would be in series, […]

What is ideal machine principle? An ideal machine is a machine in which energy given as the output is equal to the input energy. The principle of an ideal machine is to convert all the given energy into a useful energy. Hence, we say that the machine is 100% efficient. You may be wondering why […]

What is the present status of science and technology in the Philippines? Recently, the Philippines ranked 73rd out of 128 economies in terms of Science and Technology and Innovation (STI) index, citing the country’s strength in research and commercialization of STI ideas. Who was the president that emphasized the role of science and technology in […]

How many protons and electrons are in Hg+? Mercury atoms have 80 electrons and 80 protons with 122 neutrons in the most abundant isotope. Under standard conditions mercury is a shiny, heavy, silvery liquid. It is the only metal that is liquid at room temperature. What is atomic symbol Hg? Cite. Mercury is a chemical […]