Category: Physics

What happens when zinc reacts with HCl? When zinc reacts with hydrochloric acid it produces zinc chloride and hydrogen gas. Is Zn and HCl a chemical reaction? When zinc reacts with hydrochloric acid, the reaction bubbles vigorously as hydrogen gas is produced. The production of a gas is also an indication that a chemical reaction […]

What are the limitations of Einstein theory of specific heat? The correct statement is that Einstein’s law fails to account for the low temperature behavior of specific heat of solids, even qualitatively, but at high temperature it goes to the Dulong and Petit law limit, which is an accurate description of the specific heat of […]

Is 300 watts enough for a subwoofer? An aftermarket receiver — you might want 200 to 300 watts RMS of power. Amplified speakers with around 50 watts RMS per channel — 250 to 500 watts RMS is a good starting point. A system with 100 watts RMS per channel — having at least 1,000 watts […]

Why does my heating work upstairs but not downstairs? Because heat rises this warm area is likely to be the radiators upstairs in a house, or if you live in a flat it would most likely to be the radiator/s nearest the boiler or hot water tank. If your radiators are hot upstairs and cold […]

What is broaching in machining? Broaching is a machining process using a cutting tool with teeth that increase in size from front to back. In many cases, an entire surface (or multiple surfaces) can be finished in a single pass with broaching. The technique is most often applied to finish holes, splines and flat surfaces. […]

Is Bacteria living or nonliving? Bacteria (singular: bacterium) are a major group of living organisms. Most are microscopic and unicellular, with a relatively simple cell structure lacking a cell nucleus, and organelles such as mitochondria and chloroplasts. Bacteria are the most abundant of all organisms. Do antibiotics weaken immune system? Will antibiotics weaken my immune […]

Why do things look bigger under water? The index of refraction for water is 1.33. This larger index of refraction for water means that the angle the rays of light reach your eyes is larger in water than the angle would be in the air. This increase in the angle size of light to your […]

Why is NASA important to our daily life? Space technology has helped astronauts and scientists to research stars, planets, and the creation of the universe. The technologies discovered by NASA to explore new horizons for humanity are now being put to everyday applications. How does NASA affect the environment? From solar arrays and fuel cells […]

Which best describes the operational period briefing? 1 Answer. Explanation: The operations period briefing is the shift briefing that is conducted at the beginning of every operation period in order to present the incident action plan to tactical resource supervisor. Does an incident commander’s scope of authority come from the incident action plan? Explanation: An […]

What causes a solution to be conductive? When a solution conducts electricity, the charge is carried by ions moving through the solution. Ions are atoms or small groups of atoms that have an electrical charge. Some ions have a negative charge and some have a positive charge. Pure water contains very few ions, so it […]