Category: Physics

What is the working distance for a 4x objective lens? Table 1 – Objective Specifications by Magnification Achromat Correction Magnification Numerical Aperture Working Distance (mm) 4x 0.10 30.00 10x 0.25 6.10 20x 0.40 2.10 What is the working distance of a lens? The working distance defines the free space between the object and the leading […]

Is Melting exothermic or endothermic? Phases and Phase Transitions Phase Transition Direction of ΔH Fusion (Melting) (solid to liquid) ΔH>0; enthalpy increases (endothermic process) Vaporization (liquid to gas) ΔH>0; enthalpy increases (endothermic process) Sublimation (solid to gas) ΔH>0; enthalpy increases (endothermic process) What are two examples of exothermic? Examples of Exothermic Reactions any combustion reaction. […]

What is the characteristics of other planets in the solar system? The solar system is host to two broad categories of planets. The four closest to the sun — Mercury, Venus, Earth and Mars — are the terrestrial planets. They have rocky surfaces enclosed by relatively shallow atmospheres. The gas and ice giants — Jupiter, […]

How many possible molecules are there? According to the Chemical Abstracts Service, CAS REGISTRY (SM) contains more than 90 million unique organic and inorganic chemical substances, such as alloys, coordination compounds, minerals, mixtures, polymers and salts, and more than 65 million sequences—more than any other database of its kind. What is the 2nd most common […]

What type of reaction is magnesium with hydrochloric acid? Oxidation – Reduction. Adding magnesium metal to hydrochloric acid produces hydrogen gas. The magnesium dissolves to form magnesium chloride, MgCl2. What type of reaction is MgCl2? Magnesium (Mg) combines with chlorine (Cl2​) to form a new product as magnesium chloride (MgCl2​). Therfore its a combination reaction […]

What results when a wave reflects off a fixed boundary? The right end is held tightly; it is a fixed end. The wave reflects off this fixed end and returns as a downward displaced pulse. Reflection off a fixed end results in inversion. What happens to a wave at a fixed boundary? A wave reflected […]

What is the price elasticity of supply Can you explain it in your own words? Price elasticity of supply measures the responsiveness to the supply of a good or service after a change in its market price. According to basic economic theory, the supply of a good will increase when its price rises. Conversely, the […]

Do chat rooms still exist in 2020? Chat rooms don’t get the love they once did. AOL Instant Messenger, IRC, and other similar chat services don’t really exist much anymore despite the spike in data-driven messaging services. However, those apps rarely have public chat rooms to join and engage with random people. … Is Bored […]

What is the relationship between the kidneys and the liver? Generally speaking, the liver and kidney are key organs for regulation of homeostasis and metabolism in the body: the liver is the major player for metabolism of glucose (energy), protein, and lipid, and kidney is that for homeostasis of water, electrolytes, and acid-base balance. What […]

What is the correct order of development? (A) Correct sequence in development is Fertilization → Zygote → Cleavage → Morula → Blastula → Gastrula. What are the five stages of man’s development? The key components of Erikson’s model of human development include stage one, infancy, trust versus mistrust; stage two, toddlerhood, autonomy versus shame and […]