Answer:
The thickness of the film is
Explanation:
The relation between the refraction index, and a wavelength is given by
<em>where is the number of fringes, is the wavelength of the incident light, and is the thickness of the film</em>.
<u>From this relation</u>, we have that
wich gives us that
is the thickness of the film.
Thank you for posting your question your question here. Below is the solution:
time = 3.00 / 1.75
<span>time = 1.714 </span>
<span>now </span>
<span>distance = (initial velocity + final velocity) / 2 * time/ 1 </span>
<span>Hence</span>
<span>3 = ( 1.75 + final velocity) / 2 * 1.714 </span>
<span>3.5 - 1.75 = final velocity </span>
<span>Therefore, the final velocity is 1.75 m /s</span>
Answer:
A)friction
Explanation:
The friction of air resistance slows down the acceleration due to gravity for real-world objects.
Air resistance is a form of friction found in atmosphere.
Frictional force is a force that opposes the motion of a body. It acts in the opposite direction of motion. Friction slows down real-world objects moving through the air.
Without friction, motion will not be possible.
The time for the javelin in the air will be 3.977 second
<h3>What is the period?</h3>
The value of time needed to complete the upward and the downward motion is the total period. Its unit is the second and is denoted by t. T is the time at which the ball first hits the ground.
Given data;
Θ is the angle of throw = 43.2°
u is the thrown velocity = 28.5 m/s
t is the time for the javelin in the air
The time period is found as;
Hence the time for the javelin in the air will be 3.977 second
To learn more about the period, refer to the link;
brainly.com/question/569003
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