What proves a permanent magnet? A high magnetic ordering temperature (called the “Curie temperature” or Tc), below which the material is spontaneously magnetic. A large remanent magnetic flux (called “remanence” or Br) maintained in the absence of an external magnetic field. A strong resistance to demagnetization (called “coercivity” or Hc) What is the strength of […]
How do you trick a motion sensor?
How do you trick a motion sensor? Most motion detectors, even newer ones, use infrared to detect significant changes in the surrounding room’s temperature, Porter said. Normally, walking around in a room would set off these sensors, but using something as simple as a piece of styrofoam to shield your body can trick them, he […]
Which change of state takes place when a gas loses energy?
Which change of state takes place when a gas loses energy? In evaporation, matter changes from a liquid to a gas. In condensation, matter changes from a gas to a liquid. All matter is made of tiny moving particles called molecules. Evaporation and condensation happen when these molecules gain or lose energy. Will water freeze […]
What happens if atmospheric pressure is too high?
What happens if atmospheric pressure is too high? As the pressure decreases, the amount of oxygen available to breathe also decreases. At very high altitudes, atmospheric pressure and available oxygen get so low that people can become sick and even die. What is considered high pressure weather? A barometer reading of 30 inches (Hg) is […]
What is reverse causality example?
What is reverse causality example? According to Katz (2006), identifying reverse causality is sometimes a matter of “common sense.” For example, a study might find that brown spots on the skin and sunbathing are linked. While it is plausible that sunbathing can cause brown skin spots, it’s highly unlikely that the brown spots cause sunbathing. […]
What are the health benefits of infrared light?
What are the health benefits of infrared light? Infrared therapy has many roles in the human body. These include detoxification, pain relief, reduction of muscle tension, relaxation, improved circulation, weight loss, skin purification, lowered side effects of diabetes, boosting of the immune system and lowering of blood pressure. Is infrared light bad for you? IR […]
What kind of pulley is a flagpole?
What taxes were put on the colonists?
What taxes were put on the colonists? The laws and taxes imposed by the British on the 13 Colonies included the Sugar and the Stamp Act, Navigation Acts, Wool Act, Hat Act, the Proclamation of 1763, the Quartering Act, Townshend Acts and the Coercive Intolerable Acts. What did Great Britain do to the colonists? The […]
What results when two atoms share electrons?
What results when two atoms share electrons? A covalent bond results when two atoms share electrons. In the case of two hydrogen atoms, each shares its single electron with the other. This sharing allows each to fill its electron shell with two electrons. The pair of shared electrons constitutes a covalent single bond. How many […]
What is say is a path of electricity one word answer?
What is say is a path of electricity one word answer? An electric circuit is a path in which electrons from a voltage or current source flow. The point where those electrons enter an electrical circuit is called the “source” of electrons. Is a closed path that allows electricity to flow from one point to […]