Answer is B:) because you just woke up
500 kg/m^3 ...................................
Answer:
A. Adjusts how far down the piston travels
Explanation:
This type of engine changes the possition of the piston in order to modify the compression chamber volume and therefore the compression ratio of the engine. The volume of the chamber is proportional to the run of the piston (how far down the piston travels)
This engine is used to achive the optimal compression rate in each individual stage.
To develop this problem it is necessary to have the concepts related to Ohm's law and resistivity.
Ohm's law is defined by the equation
Where
R=Resistence
I = current
V= Voltage
While the resistivity equation is given by
Where
resistivity
A= cross-section area
R= Resistance
L=Lenght of wire
A) We can find the resistence re-arranging our first equation, so
B) From our second equation we can re-arrange for L, so