# Automobile Intermittent Wiper System#

The timing device in an automobile’s intermittent wiper system is based on an $$RC$$ time constant and utilizes a $${{ params.C }}\rm\ \mu F$$ capacitor and a variable resistor. Over what range must $$R$$ be made to vary to achieve time constants from $${{ params.t1 }}\rm\ s$$ to $${{ params.t2 }}\rm\ s$$?

## Part 1#

What must be the value of $$R$$ for the time constant to be $${{ params.t1 }}\rm\ s$$?

Please enter in a numeric value in $$\rm\ \Omega$$.

## Part 2#

What must be the value of $$R$$ for the time constant to be $${{ params.t2 }}\rm\ s$$?

Please enter in a numeric value in $$\rm\ \Omega$$.

### pl-submission-panel#

$$R=$$ $$\rm\ \Omega$$ (Part 1)
$$R=$$ $$\rm\ \Omega$$ (Part 2)