Category: Physics

Is there an element named after India? Copper gets its name from the Island of Cyprus, while Beryllium and Strontium get their names indirectly from places in India and Scotland. In other cases, chemists have tried to honour their country, such as France (gallium and francium), Germany (germanium), and Russia (ruthenium). What are 3 elements […]

Can you shower during thunderstorms? Is it safe to take a shower or bath during a lightning storm? No. Lightning can travel through plumbing. It is best to avoid all water during a lightning storm. Do fish die when lightning strikes the ocean? Bodies of water are frequently struck by lightning. So why don’t all […]

What is a way to use the word theory? The term “theory” means a very different thing when used in everyday conversation and in science. In our day to day speech, we often use “theory” to mean a guess or unsubstantiated idea about how something works (as in “I have a theory that gremlins are […]

What is the function of the brushes? A brush or carbon brush is an electrical contact which conducts current between stationary wires and moving parts, most commonly in a rotating shaft. Typical applications include electric motors, alternators and electric generators. How do I know if my motor brushes are bad? As a general rule, if […]

What is correct rejection? In signal detection theory, an instance of failing to detect a signal when the signal is in fact absent. Also called a correct reject. Compare false alarm (2), hit, miss. Who came up with signal detection theory? Created by Ronald Sahyouni. What are the basic assumptions of signal detection theory? The […]

What is the power output of a typical grandfather clock? In simple words, power can be defined as the work done by the time and the SI unit of the power is Joules per second. For example in the case of the light bulb, the Incandescent light bulb takes 60 watts per hour. For example […]

What type of energy transfer is transferred by waves? In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. In water waves, energy is transferred through the vibration of the water […]

Does walking calm anxiety? Psychologists studying how exercise relieves anxiety and depression suggest that a 10-minute walk may be just as good as a 45-minute workout. Some studies show that exercise can work quickly to elevate depressed mood in many people. How physical activity improves mood? Exercise promotes chemicals in the brain that improve your […]

Is Zn or Cu the cathode? Zinc behaves as the anode (supplying electrons) of the galvanic cell and the copper as the cathode (consuming electrons). What will happen to the value of EMF of the cell Zn Zn2+? Hence, increasing the concentration at anode compartment, will increase the concentration of Zn2+ ions, and therefore, from […]

Which is faster coaxial or twisted pair? In comparisons between coax vs twisted pair, coaxial cables are able to transmit over 80 times the amount of data as a twisted pair cable. Because of this, coaxial cables are almost always used for high-speed communication, including internet, cable and telecommunications services. Which cable has highest bandwidth? […]