The visible radiation produced by new stars within a molecular cloud get absorbed by dust grains and heats up the cloud
A molecular cloud is an interstellar cloud of gas and dust in which molecules can form, the most common of which is hydrogen .
The formation of stars occurs exclusively within molecular clouds because of their low temperatures and high densities, because the gravitational force acting to collapse the cloud must exceed the internal pressures that are acting "outward" to prevent a collapse.
Visible radiation are absorbed by dust grains and heats up the cloud as it cannot penetrate through the cloud instead get absorbed by the cloud . Newly formed stars are visible nearby, their images reddened by blue light which got scattered by the pervasive dust.
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Explanation:
formation of compounds because the electric forces compel the atoms to attract each other and formed bonds which leads to the formation of chemical compounds. The attractive or repulsive interaction between any two charged bodies is known as an electric force so the attraction between two opposite charged atoms causes the formation of compounds so we can conclude that electric forces are important for the formation of compounds.
When you exercise, your body naturally sweats in order to cool itself off. The sweat has a definite amount of salt in it, which is why your sweat tastes salty. Also, The more you sweat, the more salt that leaves your body.
Answer:
Kinetic energy is 1000 J.
Explanation:
Given:
Mass of the bicycle,
Distance traveled,
Time of travel,
Unknowns:
Speed of the bicycler, .
Kinetic energy of the bicycler.
Equation:
Speed of the bicycler is,
Therefore, the kinetic energy of the bicycler is given as,
Substitute:
Plug in 5 m/s for and 80 kg for . Solve for KE.
Solve:
Therefore, his kinetic energy is 1000 J.
Answer:
A reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point.
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