New answers tagged

0

Sounds like GPS is best here. The position of the antenna is determined first in coordinates relative to the center of the earth, and then translated onto the ellipsoid and geoid. So finding the position relative to the center of the earth should actually be more accurate than finding its altitude relative to sea level. (Survey-grade can be centimeter ...


0

There is no limit on the 'ability to store charge' involved. What is different, is the proportional relationship between stored energy per unit charge (voltage) and amount of charge (ampere-seconds) stored. A rechargeable battery keeps its charge chemically bonded (and stores a LOT of charge for a given voltage rise), while a close-spaced-plate capacitor ...


1

In vacuum, any two point charges bearing electric charge of the same sign will solely interact, if they are pinned at a particular distance, via the Coulomb force that is in $\sim \frac{q_1q_2}{r^2}$ as you say so that they will always repel no matter the distance. Now, if you take in vacuum any two charged pieces of the same material (even at the ...


2

The color of the photon is related to its frequency $f$, which can be related to the energy of the photon by the expression $E = hf$, where $h$ is Planck's constant. Thus the different colors of the emitted photons describes their different energies. The next step is to determine why specific elements emit certain colors. This has to do with the different ...



Top 50 recent answers are included