Answer:
1.29 N
Explanation:
The equation for force (with work and distance) is:
We can plug in the given values into the equation:
light traveling through air encounters a second medium which slows the light to 100,000 miles/second. What is the index of the s
2 answers:
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Missing figure: find it in attachment.
Answer:
Force D
Explanation:
In order to answer the question, let's keep in mind that the force of gravity on an object on Earth is the attractive force exerted by the Earth on the object; its direction is always downward (towards the Earth's centre), and its magnitude is given by
F = mg
where m is the mass of the object and g is the acceleration of gravity.
It follows immediately that in the figure, the force of gravity is the only force acting downward: therefore, force D.
The other forces are called:
Force A: thrust (it is the forward force generated by the engines)
Force B: lift (it is the upward produced by the aerodynamics of the wings)
Force C: air resistance (it is the backward force due to the friction between the air and the surface of the plane)
Answer:
Part a)
so the polarization axis of two polarizers must be at 90 degree
Part b)
(vi) set the second polarizer so that its angular scale reads 34.3 degrees.
Explanation:
Part 1)
As per law of Malus we know that the intensity of light coming from the second polarizer and the intensity of the light from first polarizer is related as
now we know that we rotate the second polarizer till the intensity of the light becomes zero
so we will have
so we will have
so the polarization axis of two polarizers must be at 90 degree
Part b)
when two axis are inclined at 90 degree then scale reads 104.3 degree
so here the scale exceeds the reading by
so in order to make them inclined at 20 degree we will have
(vi) set the second polarizer so that its angular scale reads 34.3 degrees.