As the density of the unknown substance is 0.68g/0.8ml = 0.85g/ml, it is less dense than the maple syrup at 1.33g/ml and will float.
Answer: s=d/t=68m/s/12m/s= 5.6 M/s
Explanation:
The answer to this question is A.
Gravity accelerates you at 9.8 meters per second per second. After one second, you're falling 9.8 m/s. After two seconds, you're falling 19.6 m/s, and so on.
0.76 ns does it take light incident perpendicular to the glass to pass through this 6.4 cm -thick sandwich.
<h3>What is refractive index?</h3>
The measurement of how much a light beam bends as it travels through different media is called the refractive index. It may alternatively be described as the relationship between the speed of a light ray in a material and the speed of a light ray in a vacuum, or n = c/v.
The more distorted the light is, the slower it moves through the medium, and ultimately, the more effective the refraction is, the higher the index number. A higher index score for eye wear use indicates that less material is required to get the desired effect.
when light goes in a medium,its velocity reduces to c/u (where c = velocity of light, u = refractive index)
since, light ray is incident perpendicular,there would be no refraction
total time taken will be (time=distance/speed)
t = 0.052/(3 × 10⁸/3.2) + 0.014/(3 × 10⁸/1.4) + 0.023/(3 × 10⁸/1.8)
t = 0.76 ns
To know more about light incident refer to:
brainly.com/question/15838784
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