Answer:
they are both clocks i think please be right
The cost of developing thermonuclear power with plasmabe defended because D. It can provide an inexpensive power source.
<h3>How did the
cost of developing t
hermonuclear power defended?</h3>
The cost of developing thermonuclear power defended becvause we can see in the paragraph how it was told that the generation of ths power can be donee through the understanding of the occurrence of plasmain nature,
It should be noted that this thermonuclear power with plasmabe posses the characteristics which make it to exist in the ionosphere, and it can be felt in the flames as well; as in the chemical and nuclearexplosions.
In conclusion the power can be seen as an inexpensive source power because the p[roduction of this power cn be found in most of the thing that can be found around us as discused above.
Therefore, option D is correct.
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Answer:
Because the angle of the sun moves/rotates in the summer, the sun's rays move their angle and impact the earth.
Answer:
Angle of ray makes with the vertical is 62.1 degree
Explanation:
As per the ray diagram we know that the angle of incidence on oil brine interface will be given as


now by Snell'a law at that interface we have

now we will have


now this is the angle of incidence for oil air interface
so now again by Snell's law we will have



Answer:
All of the choices are correct except the nodes, which don't move at all.
Explanation:
when a horizontal string fixed at both ends is oscillating in a standing wave pattern the antinodes move with simple harmonic motion while the node is stationary.