Category: Physics

Can I wire lights in series? Series Wiring is “ALL or NONE” type wiring mean all the appliances will work at once or all of them will disconnect if fault occurs at any one of the connected device in series circuit. High supply voltage are needed if we need to add more load (light bulbs, […]

What is the best topic in physics? List Of Some Important Physics Topics Useful For Students Newton’s Laws of Motion. Vectors and Projectiles. Work and Energy. Circular Motion and Gravitation. Electric Circuits. Thermal Physics. Vibrations and Waves. Refraction and Lenses. Which branch of physics is most interesting? Particle physics was another very exciting one….When considering […]

Which is more reactive Fe2+ or Fe3+? In an oxidative solution, Fe2+ will be. In a reductive environment, Fe3+ will be more reactive. Fe3 is more stable than Fe2, so Fe2 is more reactive than Fe3. Is Iron 2 or 3 more common? Properties of Iron. Like other Group 8 elements, iron exists in a […]

What happens to a solid when you remove heat? When heat is removed from a system the heat cools down. If you boil water and you put it in the freezer it will become ice. If you add heat to a solid it becomes a liquid. When you add heat to a liquid it becomes […]

Is F MA wrong? 1 states: In fact the law, F=ma is not exactly true; if it were a definition we should have to say that it is always true; but it is not First, because Newton’s Second Law is not exact, and second, because in order to understand physical laws, you must understand that […]

Can hermit crabs have babies? Hermit crab babies hatch from eggs. That’s when the mother crab takes her eggs to the water and drops them in to hatch. Many animals have more than one offspring at a time, but hermit crabs, have many in one effort. Why do I never see my hermit crabs? So, […]

Can a goalkeeper put the ball down then pick it up again? The goalkeeper is not permitted to give up possession with her hands, either intentionally or accidentally, and then pick up the ball again (in the penalty area) before another player touches it. This foul gives an indirect kick to the opposition where the […]

What metals will a magnet attract? Iron is magnetic, so any metal with iron in it will be attracted to a magnet. Steel contains iron, so a steel paperclip will be attracted to a magnet too. Most other metals, for example aluminium, copper and gold, are NOT magnetic. Two metals that aren’t magnetic are gold […]

Can you explain why mass is conserved even when it looks like some mass was lost? No atoms are added or taken away from the system, so the mass stays the same. Even in a chemical reaction when atoms interact and create new products, mass is conserved. This is because the new substances created are […]

Where does gas exchange occur in the body? During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls […]