Category: Physics

What does waning light mean? •Waning means that. the illuminated side is decreasing. Is waning on the left or right? Recognize that the moon waxes and wanes from right to left. Different parts of the moon are illuminated during waxing and waning. A waxing moon will be illuminated on the right side, and a waning […]

Why does the wind stop blowing? The wind speed tends to decrease after sunset because at night the surface of the Earth cools much more rapidly than does the air above the surface. During the day it is very easy for the air to mix and cause surface gusts. If there is a low pressure […]

Which is a better absorber of heat energy land or water? Land surfaces absorb much more solar radiation than water. Water reflects most solar radiation that reaches its surface back to the atmosphere. Since land absorbs more solar radiation the land surface retains more heat as do the vegetation for energy. Thus, land surfaces warm […]

What happens to equilibrium when supply and demand both increase? An increase in demand, all other things unchanged, will cause the equilibrium price to rise; quantity supplied will increase. A decrease in demand will cause the equilibrium price to fall; quantity supplied will decrease. A decrease in supply will cause the equilibrium price to rise; […]

Where was 5G invented? South Korea Which city has 5G first in the world? On April 3, 2019, of we introduced 5G mobile service in parts of Chicago and Minneapolis. Customers in those cities were the first in the world to have a 5G-enabled smartphone connected to a 5G network. Does 6G network exist? Yes, […]

Is a phonon a particle? Phonon is considered a quasi-particle, beacuse it can exist only in solids as a consequence of vibrational motions: they cannot propagate in vacuum. Does phonon have mass? Acoustic phonons have an energy which is inversely proportional to their wavelength for long wavelength. Therefore, they are massless, like photons. Optical phonons […]

How do I get air out of my fuel system? To purge air from the low-pressure side of the fuel system, open fuel-line unions and bleed ports downstream of the pump, one at a time, beginning with those closest to the pump, and continue pumping until fuel, and not air, runs out. How do you […]

Where is the electric field equal to zero? 1.34m. At what point on a line joining the two charges is the electric field zero? In Region III, we see that they are pointing in opposite directions and there is a place in this region where their magnitudes are the same. It is at this point […]

Can a body have mass but no weight class 9? Yes, a body can have mass but still no weight. Weight W = mg, where m is the mass of the body and g the acceleration due to gravity. g = 0 at the centre of the earth and in space. What is the weight […]

What is the period of sin 2x? 1 Answer. Dean R. sin2θ=12(1−cos(2θ)) so has period π . What is periodic signals with examples? Examples of periodic signals include the sinusoidal signals and periodically repeated non-sinusoidal signals, such as the rectangular pulse sequences used in radar. Non-periodic signals include speech waveforms and random signals arising from […]