You should mention that sound waves are generated in identical conditions i.e the speed of sound is same in the two experiments.
In that case the ratio is
2v/2L1 : 3v/4L2 = 4L2 : 3L1 .
Answer:
Explanation:
As the potential energy of the freely falling object decreases, its kinetic energy increases on account of an increase in its velocity. ... Thus, the law of conservation of energy is not violated.
I can’t open or look at the image
Answer:
The position nature and size of an image when an object placed at a distance equal to its focal length of rear view mirrors in vehicle will be
1) Position: Behind the mirror
2) Nature: Virtual
3) Size: Smaller than the object
Explanation:
Due to the nature and use of rear view mirrors, which are meant to enable the front facing driver visualize a wide area of the back portion of the vehicle, such that the images of the object will always remain smaller than the object, require a convex image
The image size, location, nature and orientation of an object placed in front of a convex mirror is diminished, behind the mirror of the upright, virtual, and upright
Therefore, the position nature and size of an image when an object placed at a distance equal to its focal length of rear view mirrors in vehicle will be
Position: Behind the mirror
Nature: Virtual
Size: Smaller than the object.
To solve this problem it is necessary to apply the concepts given by Malus regarding the Intensity of light.
From the law of Malus intensity can be defined as
Where
Angle From vertical of the axis of the polarizing filter
Intensity of the unpolarized light
The expression for the intensity of the light after passing through the first filter is given by
Replacing we have that
Re-arrange the equation,
Re-arrange to find \theta
The value of the angle from vertical of the axis of the second polarizing filter is equal to 30.2°
