Category: Physics

What is meant by visual angle? Visual angle is the angle a viewed object subtends at the eye, usually stated in degrees of arc. It also is called the object’s angular size. The diagram on the right shows an observer’s eye looking at a frontal extent (the vertical arrow) that has a linear size , […]

How long should you hold your stretch for? For optimal results, you should spend a total of 60 seconds on each stretching exercise. So, if you can hold a particular stretch for 15 seconds, repeating it three more times would be ideal. If you can hold the stretch for 20 seconds, two more repetitions would […]

Does bulb have electromagnet? the core of an electromagnet must be a metal that can allow current to flow and can produce necessary magnetic field. What type of light does this light bulb produce most? continuous light Does a compass use electromagnets? The needle of a compass is itself a permanent magnet and the north […]

How do you know if a molecule is radical? My TA told us that the easiest way to tell if a molecule is a radical is if it has an odd-numbered amount of valence electrons. If it has an even number of valence electrons then it would not be a radical. How are radicals applied […]

How does natural selection affect humans? Probably more than you might think, a new study suggests. Natural selection is still influencing the evolution of a wide variety of human traits, from when people start having children to their body mass index, reports a study published Monday in the journal Proceedings of the National Academy of […]

What are the four laws of logic? The Law of Identity; 2. The Law of Contradiction; 3. The Law of Exclusion or of Excluded Middle; and, 4. The Law of Reason and Consequent, or of Sufficient Reason.” What is the use of logic in law? One use of logic in the law is motivated by […]

What is the most important objective of lighting? Illuminating action on stage One of the most important functions of lighting design is illuminating the action on stage. Lighting is needed so that the audience can see clearly what is happening. Which light is used in 3 point lighting to get rid of shadows behind the […]

What happened Apollo 10 Snoopy? After Apollo 9 tested the lunar module in space for the first time in Earth orbit, Apollo 10 acted as a dress rehearsal for the Moon landing. Unlike in the five missions that landed on the Moon, the Snoopy lunar module was ultimately jettisoned into an orbit around the Sun. […]

What are antacids state their role in the treatment of indigestion? Antacids are medicines that neutralise the acid in your stomach to relieve indigestion and heartburn. What is antacids & example? Antacids are medicines that neutralize stomach acid to reduce heartburn. Examples of antacids include: Aluminium hydroxide gel (Alternagel, Amphojel) Calcium carbonate (Alka-Seltzer, Tums) How […]

How many skin cells do you lose a day? Bye-Bye Skin Cells Though you can’t see it happening, every minute of the day we lose about 30,000 to 40,000 dead skin cells off the surface of our skin. So just in the time it took you to read this far, you’ve probably lost about 40,000 […]