In a properly designed and operated transformer, the ratio of
the primary to secondary coil voltages is the same as the ratio of
primary to secondary coil winding turns.
Since the secondary has twice as many turns as the primary has,
the secondary voltage is also double the primary voltage.
75 volts = (2) x (primary voltage)
Primary voltage = 37.5 volts AC (transformers can't handle DC)
Answer:
563.64 m
Explanation:
Given that as per the question
x = 5 cm = 0.05 m
D = 4.2 × 107 m
d = smallest aperture size
As per the situation the solution of the smallest aperture telescope that she can get away with is below :-
We will use Rayleigh's diffraction limit which is
The equation will be
d = 563.64 m
So, the answer is d = 563.64 m
Answer:
In the given diagram Arrow Y indicates the second law of thermodynamics.
Explanation:
Second law of thermodynamics:
Total entropy of the system remains constant for an isolated system. If the amount of heat is converted into work there is loss of energy to the surrounding.
Arrow W:
It represent the work done by the piston for its movement. From second law of thermodynamic amount of heat is converted into work there is loss of energy to the surrounding.
This part doesn't represent the loss of heat to the surrounding. Thus, it do not indicate second law of thermodynamic.
Arrow Y:
It represent the heat added when work is done by the piston for its movement. From second law of thermodynamic amount of heat is converted into work there is loss of energy to the surrounding.
This part represents the absorption of heat to the surrounding. Thus, it indicates second law of thermodynamic.
Arrow Z:
It represent the work done by the piston for its movement. From second law of thermodynamic amount of heat is converted into work there is loss of energy to the surrounding.
This part doesn't represent the loss of heat to the surrounding. Thus, it do not indicate second law of thermodynamic.
Thus, only arrow Y indicates the second law of thermodynamics.