Answer:
When an electromagnetic wave passes from space to matter, some part of the energy is absorbed by the matter and it increases its energy. The wave may reflect and some part may pass through the matter depending on the amount of energy they have. The amplitude of the wave decreases if some parts of it are reflected.
Answer:
The answer to your question is: Element
Explanation:
Question 1. The atomic number or proton number of an atom has the symbol Z. This number indicates the number of protons and element has. Each elelement has a specific atomic number, two different atomic numbers mean 2 different elements.
From the options given, we conclude that the element is different.
Answer:
disk component: the flat disk in which stars follow orderly, nearly circular orbits around the galactic center (contains interstellar medium, gas and dust and star formation here)
.
spheroidal component: the bulge and the halo.
Disk component includes cool gas and active star formation.
Explanation:
Spiral galaxies have three main components: a bulge, disk, and halo.
The disk component of a spiral galaxy mostly consists of the gas and the dust. The disk typically has younger stars and also have active star formation. The disk forms arm structures. Our Sun is located in an arm of our galaxy, the Milky Way.
The bulge is a spherical structure found in the center of the galaxy. This feature mostly contains older stars.
The halo of a galaxy is a loose, spherical structure located around the bulge and some of the disk. The halo contains old clusters of stars, known as globular clusters.
The answer is A) 1000 J
According to the law of conservation of energy, the total energy before an action is always equal to the total energy after the action.
So that is, the total energy is 8000J found as potential energy, 7000J has transformed into kinetic energy, then the thermal energy should be the remaining 1000J.
Hope this helps.
Answer:
About 2 units.
Explanation:
We assume that there is no heat dissipating instrument in the room
Total cooling load of the room is defined from the given below equation
=++
where
= 10*100 W =1 KW
= 40*360 KJ/h= 4 KW
=15000KJ/h= 4.17 KW
= 1+4+4.17=9.17 KW
the number of air conditioner unit is ==1.83
which is approximately 2 units