As the salt solution increases its salinity, its refractive index also increases, with decreasing temperature. Through this relationship, the refractive index of salt solution at a constant temperature can be used to determine the concentration of the said solution.
Answer:
The magnitude of the electric field between the membranes is 1.13 x 10⁶ N/C
Explanation:
Given;
the distance of separation of the parallel plate capacitor, d = 10nm
the charge density, σ = 10⁻⁵C/m²
the magnitude of the electric field between the membranes, is calculated using the formula below;
E = σ / ε₀
Where;
ε₀ is permittivity of free space, = 8.85 x 10⁻¹² C²/Nm²
E is magnitude of the electric field between the membranes
σ is surface charge density
E = (10⁻⁵) / (8.85 x 10⁻¹²)
E = 1.13 x 10⁶ N/C
Therefore, the magnitude of the electric field between the membranes is 1.13 x 10⁶ N/C
KE=1/2*m*v^2
So 480=1/2 * m * 8^2
480=1/2 * m * 64
480=32 * m
480/32=m
15=m
Answer:
b. The speed of light is 2.99792458 x 10^8 meters/second.
Explanation:
Speed of light is a universal constant and its value is same throughout the universe . So alien living near Alpha Centauri will quickly understand about it . But other statements are not universal . Mass of electron can vary as per relativistic formula of Einstein . Similarly , mass of proton can also vary according to relativistic concept . It depends upon the velocity of particle . So, the ratio of mass of proton and mass of electron will also vary from one star to another .
