Answer:
Total resistance: 18 Ω
Total current: 0.5 A
VR1: 2.5 V
VR2: 1.5 V
VR3: 5 V
Explanation:
Two formulas/laws you <u><em>have </em></u>to know:
1) Resistors in series: Rtotal = R1 + R2 + ... (sum the individual resistors)
2) V=I·R a.k.a. I=V/R a.k.a. R=V/I (same formula in 3 shapes)
So, total resistance is sum off all three: 5+3+10 = 18Ω
Total current: I=V/R, V=9, R=18, so I = 9/18 = 0.5A
Voltage across resistor: V=I·R, I=0.5A (for all three), R=5 (for R1), so V = 0.5·5 = 2.5V. Same for the other three.
As a double check, the sum of the voltages must equal the battery voltage again, no volts ever get lost: 2.5+1.5+5 = 9V (check!!)
Answer:
Variable.
Explanation:
In Computer programming, a variable can be defined as a placeholder or container for holding a piece of information that can be modified or edited.
Basically, variable stores information which is passed from the location of the method call directly to the method that is called by the program.
For example, they can serve as a model for a function; when used as an input, such as for passing a value to a function and when used as an output, such as for retrieving a value from the same function. Therefore, when you create variables in a function, you can can set the values for their parameters
Hence, a variable is a changeable value recorded in Scratch's memory. Variables can only hold one value at a time, unlike lists.
In object-oriented programming (OOP) language, an object class represents the superclass of every other classes when using a programming language such as Java. The superclass is more or less like a general class in an inheritance hierarchy. Thus, a subclass can inherit the variables or methods of the superclass.
Basically, all instance variables that have been used or declared in any superclass would be present in its subclass object.
Answer:
ip = enrollment + section;
Explanation:
The variable ip has been declared to be a pointer to int.
int * ip;
The variable enrollment has been declared as an array of 20 elements .
int enrollment[20];
The variable section has been declared as an int.
int section;
In order to make ip point to the element in the array indexed by section, we can use the following statement :
ip = enrollment + section;
This will make ip point to enrollment[section].
Answer:
Risk assessment, Input validation and Output validation.
Explanation:
Software development life cycle, SDLC, is a systematic process a software being created must pass through or follow, from the stage of conception to death of the application.
There are various processes that occurs at the beginning of SDLC, a few of the activities are risk management, input and output validation.
Risk management is used to determine the feasibility, usefulness and profitability to cost of the software before development. The input and output validation is for security control access to the data of the software.
D. each table must depend on the entire foreing key