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A fuel injection system that does not use a sensor to measure the amount (or mass) of air entering the engine is usually called speed density type of system.
<h3>What is speed density fuel injection system?</h3>
Speed density fuel injection system is a fuel delivery method.
This system relies on a combination of sensor and an intake air temperature sensor to measure the amount (or mass) of air entering the engine.
Thus, a fuel injection system that does not use a sensor to measure the amount (or mass) of air entering the engine is usually called speed density type of system.
Learn more about speed density here: brainly.com/question/26024294
Answer:

Explanation:
As we know that current density is ratio of current and area of the crossection
now we have

so the current through the wire is given as

now we have

here we have

now plug in the values in above equation

now we have


now plug in both limits as mentioned


here R = 2.11 mm


Answer:
t = 1
Explanation:
you dont know the value of the variable