Category: Physics

Do you weigh more on a full moon? You would register a slightly higher weight during the full moon, than during the new moon. The force due to gravity of the earth and the moon is the same in either case. No, because the moon is still there, the only difference is the angle to […]

What is perturbation technique? A mathematical technique to eliminate linear terms in an equation in order to retain the nonlinear (turbulence) terms. Variables such as potential temperature (θ) or velocity (U) can be partitioned into mean (slowly varying) and perturbation (rapidly varying) components. Why do we use perturbation? Perturbation is used to find the roots […]

What types of energy are released when something burns? When you burn that wood in a fireplace, chemical energy is released and converted into thermal energy (heat) and light energy. What type of energy is produced and wasted? Heat energy is the most easily dissipated form of energy. Light energy is frequently energy seen in […]

How does a neurotransmitter affect behavior? Nerve cells communicate messages by secreting neurotransmitters. Neurotransmitters can excite or inhibit neurons (nerve cells). Each neurotransmitter can directly or indirectly influence neurons in a specific portion of the brain, thereby affecting behavior. Can a damaged brain reorganize itself? Neuroplasticity: The brain’s ability to reorganize itself by forming new […]

Can a 7 year old start her period? Now the average age for a first period is closer to 12, with one University of Cincinnati study reporting that about 10 to 15 percent of girls enter puberty at age 7 or younger, a phenomenon known as precocious puberty. This is up from just 5 percent […]

What was the Beatles last hit song? The Long And Winding Road How do I know if my Abbey Road is original? Best way to tell if a record is genuine, firstly is by the Matrix number. Its engraved very small near to the label. It should be printed as if its done by hand […]

Is gold a ferromagnetic metal? Gold (Au) in its bulk form, like the metal in a wedding ring, is not considered a magnetic material. Technically, it is classified as “diamagnetic”, meaning that it can be repelled by a magnetic field, but cannot form a permanent magnet. Why Fe is ferromagnetic? The popular understanding of a […]

How does the Industrial Revolution affect the evolution of the peppered moth? After the pollution from the Industrial Revolution started affecting trees, most of the collected peppered moths were of the dark form. Click for more detail. As the trees darkened with soot, the light-colored moths were easier to see. They lived longer and passed […]

How would life in a lake be affected if ice sank and lakes froze from the bottom up? If ice sank, lakes would freeze from the bottom up and the fish and other aquatic creatures wouldn’t survive the winter! Since water is good at holding heat, the more water there is, the more heat it […]

What is negative torque system? Definition. Negative Torque is said to occur when conditions are such that air loading on a propeller causes it to drive the engine to which it is attached vice the normal condition in which the engine drives the propeller. Which is better turboprop or jet? Less efficient & less cost-effective […]