Answer: The electric field decreases because of the insertion of the Teflon.
Explanation:
If the charge on the capacitor is held fixed, the electric field as a consequence of this charge distribution (directed from the positive charged plate to the negative charged one remains unchanged.
However, as the Teflon is a dielectric material, even though doesn't allow the free movement of the electrons as an answer to an applied electric field, it allows that the electrons be displaced from the equilibrium position, leaving a local negative-charged zone close to the posiitive plate of the capacitor, and an equal but opposite charged layer close to the negative plate.
In this way, a internal electric field is created, that opposes to the external one due to the capacitor, which overall effect is diminishing the total electric field, reducing the voltage between the plates, and increasing the capacitance proportionally to the dielectric constant of the Teflon.
Answer:
The power is 
Explanation:
In order to obtain the power it consumes we need to first obtain the resistance of the hair dryer at 120 V
Now the power supplied in Europe at their voltage of 230V would be
Looking the power obtain we see that it is higher than 1530 W so this would cause the dryer to smoke.
Answer:
The valve should be closed at 1081 kPa ⇒ 11 bar
Explanation:
![m_2 = \frac{[10.994*1509.9] + [4.006*1057.5]}{15} = 1389.1 kJ/kg](https://tex.z-dn.net/?f=m_2%20%3D%20%5Cfrac%7B%5B10.994%2A1509.9%5D%20%2B%20%5B4.006%2A1057.5%5D%7D%7B15%7D%20%20%3D%201389.1%20kJ%2Fkg)
Therefore, v₂, u₂ fix state 2.
By trial and error, P₂ = 1081 kPa & T₂ = 50.4° C
1081 kPa ⇒ 11 bar
Answer:
b. spark plugs
Explanation:
Diesel engines are characterized in that the mechanism that activates the explosion of fuel is high pressures, so when the piston reaches the top of the cylinder, the pressure of the air-diessel mixture is so high that it causes the explosion, this It is what generates the power in a diesel engine.
