Category: Physics

What is SFX and VFX? Special Effects (often abbreviated to SFX) refers to on-set visual effects techniques; you could also call them ‘practical effects’. VFX is an abbreviation of Video Effects. Video Effects enabled filmmakers to achieve the same effects as on-set SFX during post-production. What movie has the best special effects? Special effects in […]

Is it worth getting a surge protector? Since most surge protectors are cheap, they’re worth getting (and regularly replacing) just in case. We don’t currently have recommendations for specific surge protectors, but you can find plenty of options for as little as $20 or less at Amazon. How long do surge protectors last? three to […]

Can you still buy Gros Michel bananas? The few countries that still produce the Gros Michel today mostly do so under another name: Thihmwe in Myanmar, Johnson in Cuba, Pisang Ambon in Malaysia. In Hawai’i, it is commercially grown as Bluefields. Why do bananas not taste good anymore? When you break down the artificial banana […]

How can 2 ohm 3 ohm and 6 ohm be connected to give an effective resistance of 4 ohm? Answer. Answer: Put 3 ohms in parallel with 6 ohms to produce an equivalent of 2 ohms by the parallel equivalent resistance rule [1/(1/3 + 1/6) = 2] Place that parallel combination in series with the […]

How do state constitutions and laws relate to the US Constitution? State constitutions resemble the federal Constitution in that they outline the state government’s structure of legislative, executive and judicial branches as well as contain a bill of rights. Often, state constitutions are much longer and more detailed than the federal Constitution. What are three […]

Can something have more than one type of energy? Energy comes in many different types, which can be categorised into two basic forms – kinetic and potential. Energy can never be created or destroyed, but it can be transformed from one type of energy to another. What happens if you drop the skater onto the […]

How do you write a qualitative and quantitative observation? Qualitative observations use your senses to observe the results. (Sight, smell, touch, taste and hear.) Quantitative observations are made with instruments such as rulers, balances, graduated cylinders, beakers, and thermometers. These results are measurable. What are the advantages of giving qualitative observation? 1 Captures the Essence […]

Are action and reaction forces equal? Formally stated, Newton’s third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the […]

What do you know about a substance it you know its temperature? In chemistry, we define the temperature of a substance as the average kinetic energy of all the atoms or molecules of that substance. Not all of the particles of a substance have the same kinetic energy. At any given time, the kinetic energy […]

What is the relation between momentum and kinetic energy? There is a relation between kinetic energy and momentum as both the properties are linked with velocity. Momentum gets expressed as a multiplication of velocity and mass, whereas kinetic energy is the product of the square of speed and half of the mass. What happens to […]