Answer:
200 nm
Explanation:
We need a constructive interference to see the bright reflection
we know that
where m=1 and
is the wavelength of the gasoline
so 
putting the value of m and
in thickness equation

so the thickness of the film will be 200 nm
Answer: D.
Data about user preferences and activity is captured and stored under a cookie on a company’s Web server.
Explanation: The most common and best-known technology for user tracking is the use of cookies. Other known online website tracking tools are tracking pixels (or pixel tags), web beacons (or ultrasound beacons), and browser fingerprinting (or digital fingerprinting), amongst others.
a cookie will contain a string of text that contains information about the browser. To work, a cookie does not need to know where you are from, it only needs to remember your browser. Some Web sites do use cookies to store more personal information about you.
Answer:
The printItem() method code is filled in the explanation, highlighted with bold font.
Explanation:
// ===== Code from file BaseItem.java =====
public class BaseItem {
protected String lastName;
public void setLastName(String providedName) {
lastName = providedName;
return;
}
// FIXME: Define printItem() method
/* Your solution goes here */
public void printItem() {
// TODO Auto-generated method stub
System.out.println("Last name: "+lastName);
}
}
// ===== end =====
In Computer programming, a value type variable can be used to store a: value expression.
<h3>What is a variable?</h3>
A variable can be defined as any name which refers to a location in computer memory that is typically used for storing a value.
<h3>The two types of variable.</h3>
In Computer programming, there are two (2) types of variable and these include:
Generally, a value type variable can be used to store a <u>value expression</u> or a value of that type.
Read more on variable here: brainly.com/question/20264183