Answer:
The frequency of the wave is, f = 1 Hz
Explanation:
The half-wavelength of the wave can be found from the successive compression or rarefaction.
This is equal to the successive crest or trough.
The one wavelength is the wave that completes one cycle of vibration.
Therefore, the frequency of the wavelength is defined as the number of such vibrations per second. It is given by the formula
f = 1 /T or v/λ ( v - velocity of the wave)
= 1 / 1
= 1 Hz.
The unit of frequency is Hertz.
Answer:
yea it seems pretty simple.... just follow the instruction
Answer:
Dry Cell : It is a primary cell based on Leclanche cell invented by G. Leclanche in 1868. In a primary cell, the electrode reactions cannot be reversed by an external source of electrical energy. In this cell, the cell reaction takes place only once i.e., this cell is not rechargeable. It is.generally used intorched, transistors, radios, calculators, tape recorders etc. It consists of a hollow zinc cylinder which is filled with a paste of NH .
Voltaic Cell Working. The working principle of voltaic cell depends upon the principle that, whenever two dissimilar metals are immersed inside an electrolyte solution, the more reactive metal will have a tendency to dissolve in the electrolyte as positive metal ions, leaving electrons behind on the metal plate.
Explanation:
a) Dark matter: a kind of matter we can't directly observe but that we can imply its presence in various observations including gravitational effects which can't be explained by accepting theories of gravity unless more matter is present. This is the reason why dark matter is thought to account for around 80% of the matter in the universe.
b)21cm Radiation: also called hydrogen line, is a spectral line emitted by neutral hydrogen, it has a frequency of 1420megahertz and 21 cm wavelength. In astronomy, this line is used to study the amount and velocity of hydrogen in the galaxy.
Milky way: it's a barred spiral galaxy with more than 200 billion stars, approximately 100000 light-years in diameter and the sun is located about 28000light years from the center.
From the outside its structure has the following characteristics:
- Galactic disk: it is made out of old and young stars, as well as gas and dust, gravitational interactions between stars cause a circular motion with up and down motions, this disk is divided in three other parts, a nucleus (the center of the disk), a bulge (around the nucleus) and spiral arms (extended areas)
- Globular clusters: located above and below the disk, the stars in this zone are older and there's no gar or dust.
- Halo: large region surrounding the galaxy, it is made of hot gas and dark matter.
Two fundamentals parameters of the milky Way are (the radial distance from de sun to the galactic center) and , the galactic rotational velocity at
Einstein's Theory of General Relativity: general relativity is a metric theory of gravitation, that defies gravity as a geometric property of space and time, this means there's no gravitational force deflecting objects from their natural straight paths, but a change in properties of space and time that changes this straight path into a curve.
At weak gravitational fields and slow speed, this theory overlaps with Newton's.
Pulsars: they are rotating neutron stars that emit a focused beam of electromagnetic radiation its formation happens when a medium mass star dies and it maintains its angular momentum emitting a powerful blast of radiation along its magnetic field lines. They are useful to search for gravitational waves, and even to find extrasolar planets.
I hope you find this information interesting and useful! Good luck!
Answer:
Option C: The solution begins to turn blue
Explanation:
When a copper wire is placed in a beaker containing a solution of silver nitrate(AgNO3), the copper (Cu) will reduce the positive silver ions (Ag+) to metallic silver (Ag). In this same process, Copper (Cu) is oxidized to produce Copper II ions (Cu2+).
The reaction will continue to progress and silver (Ag) crystals will begin to form on the Copper (Cu) wire and thus, we will observe that the solution becomes blue as a result of the formation of copper II (Cu2+) ions.
This is a single replacement reaction.