Answer:
, ,
Explanation:
The equations of equilibrium for the rock are:
After some algebraic handling, the following expression is found:
Deceleration experimented by the rock is:
The distance travelled by the rock before stopping is:
And the time is:
Answer:
Option D
Explanation:
Option (A) is incorrect because transmission of few wavelength will procure visibility of only few colours and not all. Option B is also incorrect as refraction index remains same as it does not changes with the change in angle. Option C is also incorrect because changing orientation of only some of the light with not make any significant difference
Option D is correct because sunlight is a unpolarised light which can be polarised using reflection. Now when sunlight gets partially linearly polarized after reflection from the lake, it can be viewed by the observer's eye through the lens.
The term <u>c</u><u>e</u><u>l</u><u>l</u> is incorrect because, the average voltage of a cell is 3.40 V and as already mentioned in question, the volt of source is 18 V, so cell couldn't be the appropriate word, actually the source is <u>b</u><u>a</u><u>t</u><u>t</u><u>e</u><u>r</u><u>y</u><u>.</u>
Now, the source is most likely related to cell because a <u>b</u><u>a</u><u>t</u><u>t</u><u>e</u><u>r</u><u>y</u> which is the source here, is made up of a "group of cell".
The Slope of the line created by a distance over time graph tells you the speed
Falling, you can also suffer from severe radiation sickness and be crushed.