Answer:
Medium A -> medium C -> medium B
Explanation:
Refraction is defined a s the change in the direction of light rays as it moves from one medium to another. The speed of the light in this media depends on the nature and the refractive indices of the media.
Light has the tendency to travel faster through a medium with low refractive index rather than high refractive index.
Comparing this medias based on the above conclusion
Medium A has index of refraction 1.3; medium
B has index of refraction 1.4 and medium
C has index of refraction 1.35
The light will travel faster in medium A since it have the lowest refractive index followed by medium C then medium B.
Ranking of the media in accordance the time it takes for light to travel through these layers are as shown
Medium A -> medium C -> medium B
Answer:
The mass of unknown object is 8.62Kg
Explanation:
To develop this problem it is necessary to apply the equations related to the Drag force and the Force of Gravity.
For the given point, that is, the moment at which the terminal velocity is reached, the two forces equalize, that is,
By definition we know that the Drag force is defined as
Where,
Drag coefficient
Density
A =Cross-sectional Area
V = Velocity
In the other hand we have,
Where,
Mass of sphere
Mass of unknown object
Equating the two equations we have to
Re-arrange for m_2,
Our values are given by,
Replacing in the equation we have,
<em>Therefore the mass of unknown object is 8.62Kg</em>
Answer:
Magnets are employed to generate electricity.
Explanation:
Magnets' characteristics are employed to generate electricity. Electrons are pulled and pushed by moving magnetic fields. When you move a magnet around a coil of wire, or a coil of wire around a magnet, the electrons in the wire are pushed out and an electrical current is created.
Answer:
They developed a test for poisons in the human tissues
Explanation:
Around the 19th century, Mathieu Orfila and Robert Christison developed important tests that identified poisons in human tissues.
By so doing, they laid the foundation for what is now called forensic toxicology. This science attempts to identify poisons in human tissues especially by way of autopsies and forensic investigation.
Today forensic toxicology has expanded to include alcohol testing techniques as well as testing athletes for intake of performance enhancing substances.
Explanation:
I want to say option B - Both forces can act without objects touching.
