Answer:
Explanation:
Given
Initial Intensity of light is S
when an un-polarized light is Passed through a Polarizer then its intensity reduced to half.
When it is passed through a second Polarizer with its transmission axis 
here 
When it is passed through third Polarizer with its axis 
to first but 
to second thus 
When middle sheet is absent then Final Intensity will be zero
B. number of oscillations in a given period of time.
Answer:
1.2 s
Explanation:
The period of a pendulum is the time it takes to complete one cycle, as in move and return to its initial state, for example going from one side to the other and coming back. If this pendulum goes from one side to the other in 0.6 s, it will take it the doble of that time to perform a cycle, and that is the period
T = 2 * 0.6 s = 1.2 s
Given:
Speed = 3.5 m/s
Distance = 20 m
To find:
Time taken
Solution:
Speed = Distance/Time
so
Time = Distance/Speed
Substituting given values, we get
Time = 20/3.5
<em>Time = 5.714 seconds</em>
Please mark Brainliest if this helps!
1.2 percent of 155 million is 1,860,000. Divide that by 12 (for twelve months of the year) and get 155,000. That's the answer. 155,000.
