Category: Physics

Do magnets lose strength? Magnets will lose strength as they are heat up, but so long as they are not taken above a certain operating point (maximum operating temperature) the strength will be recovered when they cool back down. Can a magnet destroy a phone? Although high strength magnets aren’t likely to destroy your smartphone, […]

Is a can opener a 2nd class lever? In a second-class lever, such as a bottle opener, the fulcrum is at one end, the effort at the other, and the load in between. In a third-class lever, such as chopsticks, the fulcrum and the load are at either end, with the effort in between. These […]

What makes lines parallel? Lines are parallel if they are always the same distance apart (called “equidistant”), and will never meet. How do you teach parallel lines? Teaching about parallel and intersecting lines can be readily accomplished by using hands-on activities. Use Physical Movements. Lines are parallel when they are the same distance apart and […]

How do you get air resistance? Air resistance can be calculated by taking air density times the drag coefficient times area all over two, and then multiply by velocity squared. What is air resistance and water resistance? Air resistance is a type of friction between air and another material. For example, when an aeroplane flies […]

Why are leaf blowers bad? It comes down to the inefficient engines they use. The inefficient gas engines typically used on leaf blowers generate large amounts of air pollution and particulate matter. The noise they generate can lead to serious hearing problems, including permanent hearing loss, according to the CDC. Are leaf blowers 2 cycle? […]

Will current flow through an open disconnected circuit? An open circuit implies that the two terminals are points are externally disconnected, which is equivalent to a resistance R=∞ . This means that zero current can flow between the two terminals, regardless of any voltage difference. Where does electricity go in an open circuit? Types of […]

What keeps earth from falling into the sun? Answer 1: The Earth is always being pulled towards the Sun by gravity. The Earth is not moving fast enough to “escape” the Sun’s gravity and leave the solar system, but it is going too fast to be pulled into the Sun. Therefore, it keeps going around […]

How can I hide my power pole in my yard? How to Hide an Electric Pole in a Backyard Use a twining vine such as clematis to hide the pole. Use a wooden electrical pole as a support for evergreen or flowering vines, if your utility company and local government allow it. Plant a cluster […]

How does ridge push move tectonic plates? Ridge push happens at spreading centers where plates are moving apart. New parts of a plate rise because they are warm and the plate is thin. As hot magma rises to the surface at spreading ridges and forms new crust, the new crust pushes the rest of a […]

How many electrons are in the outer energy level of aluminum? 13 electrons How many valence electrons does an aluminum ion have al 3? three valence electrons Do cations donate electrons? Ions are charged atoms that form when an atom donates or accepts one or more negatively charged electrons. Cations (ions with a positive charge) […]