Answer:
Option B
Explanation:
Magnification of Microscope is
Mo= Magnification of objective lens and
Me= magnification of the eyepiece.
Both magnifications( of objective and eyepiece) are inversely proportional to the focal length.
Magnification,

when the focal length is less magnification will be high and when the magnification is the low focal length of the microscope will be more.
Thus. Magnification will increase by decreasing the focal length.
The correct answer is Option B
Answer:

13.009503 C
Explanation:
= Permittivity of free space = 
k = Dielectric constant of air 
Side of plate = 0.7 km
A = Area
d = Distance = 650 m
Capacitance is given by

The capacitance is 
Electric field is given by

The charge on the cloud is 13.009503 C
The reaction force is the glove pushing against the ball because the reaction force would be the ball pushing onto the glove.
Hope that helps :)
Answer:
The newly-formed government of the United States also became a model for French reformers. Ideas that were once just abstract thoughts – such as popular sovereignty, natural rights, constitutional checks and balances and separation of powers – were now part of an actual political system that worked
Answer:
A) A buoy rises in the water as a boat speeds past.
Explanation:
The passing boat transfers energy in the form of a wave. Other options illustrate other physics concepts like gravity (falling egg) or Newton's law (for every action, there is an equal and opposite reaction).