3 as a single number is considered a sf
Answer: Red photons have the least amount of energy.
Explanation:
Light is a wave. Visible ligth comprenhends a continuous spectrum of waves. Every color is light of certain frequency range. So, every color has its own range of frequencies and energies.
The visible light has these frequency ranges, which you can search in your textbook or internet:
color frequency
red 400 - 484 Hz
orange 484 - 508 Hz
yellow 508 - 526 Hz
green 526 - 606 Hz
blue 606 - 668 Hz
violet 668 - 779 Hz
From that, red photons are in the low end and violet photons are in the high end of frequencies.
The energy of a photon is directly proportional to the frequency. The proportionality constant is the Planck's constant (6.62607004 × 10⁻³⁴ m² kg / s).
From which you conclude that the red photon has the lowest energy and the violet photon has the highest energy.
You'd need sound waves n lasers n photographic plates
Answer: alpha decay and beta decay cause the parent nucleus to become a different element.
Explanation:
Alpha decay : It is a radioactive decay in which nucleus emits an alpha particle and turns into different atomic nucleus. During alpha decay, an atom loses 2 protons and 2 neutrons.
![_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}\textrm{Y}+_2^4\alpha](https://tex.z-dn.net/?f=_Z%5EA%5Ctextrm%7BX%7D%5Crightarrow%20_%7BZ-2%7D%5E%7BA-4%7D%5Ctextrm%7BY%7D%2B_2%5E4%5Calpha)
Beta decay is defined as the process in which beta particle is emitted. In this process, a neutron gets converted to a proton and an electron.Thus a different element is produced.
![_Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{Y}+_{-1}^0\beta](https://tex.z-dn.net/?f=_Z%5EA%5Ctextrm%7BX%7D%5Crightarrow%20_%7BZ%2B1%7D%5EA%5Ctextrm%7BY%7D%2B_%7B-1%7D%5E0%5Cbeta)
Gamma decay : In this process, the unstable nuclei transformed into stable nuclei by releasing gamma rays along with beta or alpha decay.The same element is produced.
![_Z^A\textrm{X}^*\rightarrow _Z^A\textrm{X}+_0^0\gamma](https://tex.z-dn.net/?f=_Z%5EA%5Ctextrm%7BX%7D%5E%2A%5Crightarrow%20_Z%5EA%5Ctextrm%7BX%7D%2B_0%5E0%5Cgamma)
It is true that cows, grain, and land were
more difficult to move from place to place
<span>Coins were developed as a medium of exchange
because they are easy and more convenient in negotiating and purchasing. For
example, the British pound, the yen, and the euro are examples of currencies.
It is letter A. Currencies are the money used in a certain country in their
everyday purchase of goods inside the country. When a person goes to other
country and exchange his or her money for another money that can be used inside
the country he is now currently in, then that is exchanging rates. Tariffs are the taxes payed by a certain
company of exporting or importing industry to transport it from one place or
country to another country.</span>