What would stars be like if hydrogen had the smallest mass per nuclear particle? What would stars be like if hydrogen had the sm
1 answer:
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Answer:
Explanation:
1) True. The stored energy (U) is proportional to the electric field strength (E). The electric field strength decreases when a dielectric is introduced hence inserting a dielectric decreases U.
2) False. From the formula , capacitance is inversely proportional to distance hence if the distance is doubled, capacitance decreases.
3) False. As the distance between the electric field and the object increases, its electric field decreases.
4) False. If a dielectric is inserted, the plates are further separated. Q stays the same.
5) True. The electric field strength decreases when a dielectric is introduced and capacitance is inversely proportional to electric field hence Inserting a dielectric increases C
6) True. If a dielectric is inserted, the plates are further separated. Q stays the same.
7) True. When the distance is doubled, U increases
Answer:
45.44m/s
Explanation:
To solve this problem it is necessary to go back to the concepts related to the first law of thermodynamics,
in which it deepens on the conservation of the Energy.
The first law of Thermodynamics is given by the equation:
Where,
Heat transfer
Work
Flow mass
Velocity
Specific Enthalpy
Gravity
Height
From this equation we have that there is not Heat transfer, Work and changes in Height. Then,
Then our equation would be,
Solving for
From the tables of ideal gas (air) at 216K we have,
From the tables at 250K, we have that
The velocity was previously given, then
Replacing in the equation:
Therefore the velocity of the air at the diffuser exit is 45.44m/s