Answer:
difference:
1. The generation mechanism is different, the mechanical wave is generated by mechanical vibration; the electromagnetic wave generation mechanism is also different, there is the periodic movement of electrons (radio waves); the outer electrons with atoms are generated after being excited (infrared, visible, ultraviolet) The inner electrons with atoms are generated after excitation (roentgen rays); the nuclei with atoms are generated after excitation (gamma rays).
2. The propagation mechanism is different: the mechanical interaction between the particles and the alternating induction of the electromagnetic field.
3. Mechanical waves have both transverse waves and longitudinal waves; electromagnetic waves are material waves and belong to transverse waves.
4. The influence of the medium on the propagation speed is different
Explanation:
https://qiaodahai.com/similarities-and-differences-between-mechanical-waves-and-electromagnetic-waves.html
Answer:
DISCULPA... HABLO ESPAÑOL...
PODRIAS AYUDARME? NO ME SIRVE EL TRADUCTOR Y NO SE COMO ENTRAR A BRAINLY VERSION ESPAÑOL
._. TODOS HABLAN INGLES AQUI... SOY COLOMBIANA
Explanation:
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Answer:
All the arteries except pulmonary artery carry pure blood..it is so because blood flows with a high pressure and speed And because Arteries are situated deeper under the skin have thick-walled with Narrow lumen(cavity) and pulmonary artery carries deoxygenated blood i.e without oxygen..
Explanation:
lumen means Empty space within an object(solid)
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Answer:
uplift
Explanation:
this process is called uplift and it can cause rocks that were once underground to come up above the earth's surface. once these rocks are moved the surface , they begin to weather and erode and you know what happens after that.
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