What is a critical point of a substance? Critical point, in physics, the set of conditions under which a liquid and its vapour become identical (see phase diagram). For each substance, the conditions defining the critical point are the critical temperature, the critical pressure, and the critical density. What happens to water at its critical […]
Does size affect buoyancy?
Does size affect buoyancy? Because the buoyancy of a solid cube of material depends on its density, which does not vary with the size of the object, changing the size of a cube does not affect whether it will sink or float. Do things weigh less underwater? A: When objects are placed in water, their […]
What chemicals are needed for muscle contraction?
What chemicals are needed for muscle contraction? In order to perform the mechanical work of contraction, actin and myosin utilize the chemical energy of the molecule adenosine triphosphate (ATP). What are two ways that calcium is needed for muscle contraction to occur be specific? (1) Calcium binds to troponin C, causing the conformational shift in […]
What causes resistance in a wire?
What causes resistance in a wire? The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance. The resistance of a long wire is greater than the resistance of a short wire because electrons collide with more ions as they pass through. […]
How do you talk about timbre?
How do you talk about timbre? Terms we might use to describe timbre: bright, dark, brassy, reedy, harsh, noisy, thin, buzzy, pure, raspy, shrill, mellow, strained. I prefer to avoid describing timbre in emotional terms (excited, angry, happy, sad, etc.); that is not the sound quality, it is its effect or interpretation. What does timbre […]
Why did US not join League of Nations?
Why did US not join League of Nations? The League of Nations was established at the end of World War I as an international peacekeeping organization. Although US President Woodrow Wilson was an enthusiastic proponent of the League, the United States did not officially join the League of Nations due to opposition from isolationists in […]
What are large scale maps give two examples?
What are large scale maps give two examples? Large scale maps : These maps represent small area of the earth on a large size of paper sheet with greater details. Examples: Cadastral maps, topographical maps….A map bearing a scale of 1: 4000 and larger is called : Cadastral map. Topographical map. Wall map. Atlas map. […]
Are rocks stronger under tension or compression?
Are rocks stronger under tension or compression? Rock is strong under compression but relatively weak under tension and shear. This is a result of the microscopic structure of rock: it contains microscopic cracks which are forced open and enlarged by tension and shear but which are forced closed by compression. What increases rock strength? The […]
What is the function of science and technology in development?
What is the function of science and technology in development? The role of S is to lead national development and to support socio-economic needs. The priority areas that have been identified are: – Development of electronics, information, and communication technologies. – Development of selected high technologies to lead the industrial structure adjustment. Is there a […]