Answer:
400mm
Explanation:
Refractive index is the ratio of the wavelength in the shallow water to that in deep water.
Refractive index = λs/λd
Given
Refractive index = 0.5
λs = 200mm
Required
0.5 = 200/λd
λd = 200/0.5
λd = 400mm
Hence the wavelength in deep water is 400mm
I<span>n the absence of air resistance, all objects fall with the same acceleration due to gravity.
The acceleration of gravity does not depend on mass of the object
Hope this helps!</span>
Answer:
Average speed of the swimmer is 4.44 m/s
Explanation:
As we know that the speed is the ratio of distance covered over time interval
so here we can say
so we know that
time taken to complete the trip is
now we have
The mass of the rider 1 is 4 g.
<h3>
The use of a rider in mass measurement</h3>
Rider is a metallic wire piece which is of certain mass and can be bent . It can move the beam of the Paul Bunge Balance.
The riders are the sliding pointers positioned on top of the beams to show the pan and beam weight in grams.
<h3>Mass of the rider 1</h3>
The mass of the rider 1 is obtained by subtracting mass of riders as show below.
mass of rider 1 = mass of object - (mass of rider 2 + mass of rider 3)
mass of rider 1 = 694 g - (600 g + 90 g)
mass of rider 1 = 694 g - 690 g
mass of rider 1 = 4 g
Thus, the mass of the rider 1 is 4 g.
Learn more about use of riders in mass measurement here: brainly.com/question/1747339
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