A flashlight bulb uses 2.4 W of power when the current in the bulb is 0.8 A. What is the voltage difference?
Answer:
3 Volts.
Explanation:
Answer:
3 Volts
Explanation:
Because Power = Voltage x Current, so if you substitute the values into the equation, it would be :
2.4 W = Voltage x 0.8 A
Then if you rearrange the equation, it would be :
2.4 W / 0.8 A = Voltage
Which is :
3 V = Voltage
What is the benefit of encapsulation?
A. To rename variables
B. To reuse code
C. To make all members public
D. To make all members protected
Answer:
B. To reuse code
The designer of an agent traveled to a beach for a holiday. He took the agent to the beach. He wanted the agent to capture the sunrise and the high tide. What kind of knowledge representation will the agent use in this new environment?
A.
picture
B.
number
C.
graph
D.
meta
Answer:
Picture
Explanation:
A scared kangaroo clears a fence that is 2.44 meters tall. What is the vertical component of the kangaroos velocity at take off ? If the horizontal component of the kangaroos velocity is 4.80 m per s at what angle did the kangaroo take off the ground? (hint: at its maximum height the kangaroos vertical velocity is 0)
Answer:
a) The vertical component of the kangaroo's velocity at take off is approximately 4.982 meters per second.
b) The angle at which the kangaroo took off the ground is approximately 46.066º.
Explanation:
a) According to the statement, the kangaroo has an initial horizontal velocity and jumps to overcome the fence until velocity becomes zero. If effects from non-conservative forces can be neglected, then we represent the situation of the kangaroo by Principle of Energy Conservation:
[tex]K_{1}+U_{g,1} = K_{2}+U_{g,2}[/tex] (Eq. 1)
Where:
[tex]K_{1}[/tex], [tex]K_{2}[/tex] - Initial and final translational kinetic energies, measured in joules.
[tex]U_{g,1}[/tex], [tex]U_{g,2}[/tex] - Initial and final gravitational potential energies, measured in joules.
By definitions of translational kinetic and potential gravitational energies, we expand and simplify the equation above:
[tex]\frac{1}{2}\cdot m\cdot [(v_{1,x}^{2}+v_{1,y}^{2})-(v_{2,x}^{2}+v_{2,y}^{2})] = m\cdot g \cdot (y_{2}-y_{1})[/tex]
[tex]\frac{1}{2}\cdot [(v_{1,x}^{2}+v_{1,y}^{2})-(v_{2,x}^{2}+v_{2,y}^{2})] = g \cdot (y_{2}-y_{1})[/tex] (Eq. 2)
Where:
[tex]m[/tex] - Mass of the kangaroo, measured in kilograms.
[tex]g[/tex] - Gravitational acceleration, measured in meters per square second.
[tex]y_{1}[/tex], [tex]y_{2}[/tex] - Initial and final heights of the kangaroo above the ground, measured in meters.
[tex]v_{1,x}[/tex], [tex]v_{1,y}[/tex] - Vertical and horizontal initial velocities, measured in meters per second.
[tex]v_{2,x}[/tex], [tex]v_{2,y}[/tex] - Vertical and horizontal final velocities, measured in meters per second.
If we know that [tex]v_{1,x} = 4.80\,\frac{m}{s}[/tex], [tex]v_{2, x} = 0\,\frac{m}{s}[/tex], [tex]v_{2,y} = 0\,\frac{m}{s}[/tex], [tex]g = 9.807\,\frac{m}{s^{2}}[/tex] and [tex]y_{2}-y_{1} = 2.44\,m[/tex], then (Eq. 2) is reduced into this:
[tex]11.52+0.5\cdot v_{1,y}^{2}=23.929[/tex]
Lastly, we solve for [tex]v_{1,y}[/tex]:
[tex]0.5\cdot v_{1,y}^{2}=12.409[/tex]
[tex]v_{1,y}^{2} = 24.818[/tex]
[tex]v_{1,y} \approx 4.982\,\frac{m}{s}[/tex]
The vertical component of the kangaroo's velocity at take off is approximately 4.982 meters per second.
b) The angle at which the kangaroo took off the ground ([tex]\theta[/tex]), measured in sexagesimal degrees, is obtained by the following inverse trigonometric relation:
[tex]\theta =\tan^{-1}\left(\frac{v_{1,y}}{v_{1,x}} \right)[/tex] (Eq. 3)
[tex]\theta = \tan^{-1}\left(\frac{4.982\,\frac{m}{s} }{4.80\,\frac{m}{s} } \right)[/tex]
[tex]\theta \approx 46.066^{\circ}[/tex]
The angle at which the kangaroo took off the ground is approximately 46.066º.
Ask the user how many numbers for which they want to calculate the sum. Using a for loop, prompt the user to enter that many numbers, one-by-one, keeping track of the sum. At the end, after the user entered all numbers, output the sum.
n = int(input("How many numbers do you want to sum? "))
total = 0
for x in range(n):
total += int(input("Enter a number: "))
print("Sum: "+str(total))
I hope this helps!
Following are the program to the given question:
Program Explanation:
Defining a variable "Sum" that holds an integer value.In the next step, a variable "t" is defined that uses the input method to input a value from the user-end.After the input value, a for loop is declared that takes the range of the t variable.Inside the loop, another variable "n" is defined that inputs value from user-end and use the "Sum" variable to add its value.Outside the loop, a print method has been used that prints the sum variable in the string with the message.Program:
Sum = 0#defining a variable sum that hold an integer value
t= int(input("Enter the total number you want to add: "))#defining a t variable that input value from user-end
for i in range(t):#defining a loop that add inputs values from above user-input range
n= int(input("Enter value "+str(i+1)+": "))#defining loop that inputs n value
Sum += n; #defining sum variable that adds user-input value
print("Sum of entered number: "+str(Sum))#using print method that print added value
Output:
Please find the attached file.
Learn more:
brainly.com/question/16025032
The coding system that has just two characters is called:
a
binary
b
dual.
c
basic.
d
double.
Answer:
A. Binary
Definition:
Pertaining to a number system that has just two unique digits 0 and 1. - binary code
Answer:
a binary
Explanation:
ascii. an agreed method for paring the alpanumeric characther set with binary repersenations used in computers. binary. Pertaining to a number system that has just two unique digits 0 and 1. binary code.
describe PROM, EPROM and EEPROM memories
Answer:
Explanation:
PROM is a Read Only Memory (ROM) that can be modified only once by a user while EPROM is a programmable ROM that can be erased and reused. EEPROM, on the other hand, is a user-modifiable ROM that can be erased and reprogrammed repeatedly through a normal electrical voltage.
answer 1 question and get 10 points in return
Answer:
3
Explanation:
sorry if I'm wrong...it's been a while since I took a coding class.
Which of the following emergencies are weather-related? A. Ice storm B. Hurricane C. Earthquake D. A and B
Answer:
The answer is D. A and B
Explanation:
I think the answer is D because Ice storms are caused by freezing rain and Hurricanes are formed near the equator over warm ocean waters. both of them are weather-related.
Answer: The answer is D. A and B
Explanation: I took this test 5 mins ago and it was right.
so i am on a Chromebook with headphones , and I am wondering if you can make it that a tab only play sound on one side of the headphones and other tabs to the other side of the headphones
No you cannot do that with a single pair of headphones. If you had an dual aux split... you could plug in two pairs of headphones... even if you had two bluetooth pairs I don't think it'd be possible... What do you need to do that for? Maybe I can help find an alternative solution
Endnotes are indicated by
A. lowercase letters (a, b, c)
B. numbers (1, 2, 3)
C. Roman numerals (i, il, ill)
D. uppercase letters (A, B, C)
They
Answer:
The answer is D because u have the uppercase letter bold
Answer:
Endnotes are actually indicated by Roman Numerals so option C is correct.
explain mechanical computer ,electromechanical and electronic computer with example
Answer:
A mechanical computer uses moving parts to do it’s calculations. Think old style adding machines.Electronic computers use electronic oscillators to generate a clock. The oscillator might include a mechanical element such as a crystal, but the majority of the clock signal is processed in the electrical domain.
Explanation:
An example of a mechanical computer clock is a Swiss watch movement, which needs no electronics. Movement is based upon springs coupled to other mechanical pieces. Swiss watches are high precision mechanical computers that do counting. There are other types of more sophisticated mechanical computers. Research the works of Konrad Zuse and his Z1 mechanical computer.
Your manager has tasked you with implementing security controls to mitigate IP spoofing attacks against your network. IP spoofing is a method of attack that involves sending packets to a target network while hiding the attacker's address using a false source address.
What method outlined would achieve anti-spoofing, to mitigate private IP spoofing attacks against your network?
Answer:
You can setup firewall rules with for example iptables on Linux. The rules should block source addresses of private IP ranges such as 192.168.*.* and 10.*. *. * etc. Check private IP ranges for full list.
It will however not guarantee prevention of IP spoofing in general as its not possible to prevent such attacks. Its the responsibility of ISPs. But the question asked for private IP spoofing and then the above works.
Write a loop that sets newScores to oldScores shifted once left, with element 0 copied to the end. Ex: If oldScores
Answer:
Explanation:
The following is written in Java. It is a method/function that takes the oldScore as an int input. It turns it into a String, separates all the digits, puts them into an array. Then adds the first digit to the end and removes it from the beginning, thus shifting the entire score one to the left. Then it turns the String variable back into an Integer called finalScore and prints it out.
public static void newScore(int oldScore) {
ArrayList<Integer> newScore = new ArrayList<>();
String stringOldScore = String.valueOf(oldScore);
for (int x = 0; x < stringOldScore.length(); x++) {
newScore.add(Integer.parseInt(String.valueOf(stringOldScore.charAt(x))));
}
newScore.add(newScore.get(0));
newScore.remove(0);
String newScoreString = "";
for (int x:newScore) {
newScoreString += String.valueOf(x);
}
int finalScore = Integer.parseInt(newScoreString);
System.out.println(finalScore);
}
what program we write for nested if in c++ to print something after else part but before inner if else
if(condition){
}
else
//something we want to print
if(condition){
}
else{
}
Answer:
if(condition){
}
else {
// something we want to print
if(condition) {
// ...
}
else {
// ...
}
}
Explanation:
Create code blocks using curly braces { ... }.
Use proper indentation to visibly make it clear where code blocks start and end.
Jamal wants to write a program that will find the 10 most common words in Romeo and Juliet. Which of the following constructs will be most helpful?
A. counter module
B. while loop
C. for loop
D. mean module
Answer:
The answer to this question is given below in the explanation section.
Explanation:
The correct answer to this question is A: counter module.
Counter module in python or Python counter is a container that holds the count of each of the elements present in the container. It is a sub-class available in the dictionary class. Jamal can use this module in Python to write a program that will find the 10 most common words in Romeo and Juliet.
Other options are not correct because:
While loop: while loop only iterates its body until a specific condition is met. For loop is used to iterate to a pre-specified condition and iterate until the condition is reached. While the mean module of Python is used to calculate mean and average.
Let f(w) = 2w^3 - 5. Let z = 2. What is f(z)?
Answer:
Hence f(z)=11
*This is what i think*
write aemail to brother for laptop for vitrual classes
Answer:
If I were to ask my brother for a laptop, I would go:
Hey, can I have your laptop? I need it for online classes.
Sincerely, [my name]
References inserted initially as footnotes can be converted to endnotes through an option in the software.
A. True
B. False
The answer is: A) True
Write an expression that will print "in high school" if the value of user_grade is between 9 and 12 (inclusive).
Answer:
C#
if(user_grade >=9 && user_grade <=12)
{
Console.WriteLine("In Highschool");
}
Python
if user_grade >= 9 & user_grade <= 12:
print("In Highschool")
Java
if(user_grade >=9 && user_grade <=12)
{
System.println("In Highschool");
}
Explanation:
Write a program that creates an integer array with 40 elements in it. Use a for loop to assign values to each element of the array so that each element has a value that is triple its index. For example, the element with index 0 should have a value of 0, the element with index 1 should have a value of 3, the element with index 2 should have a value of 6, and so on.
Answer:
public class Main
{
public static void main(String[] args) {
int[] numbers = new int[40];
for (int i=0; i<40; i++){
numbers[i] = i * 3;
}
for (int i=0; i<40; i++){
System.out.println(numbers[i]);
}
}
}
Explanation:
*The code is in Java.
Initialize an integer array with size 40
Create a for loop that iterates 40 times. Inside the loop, set the number at index i as i*3
i = 0, numbers[0] = 0 * 3 = 0
i = 1, numbers[1] = 1 * 3 = 3
i = 2, numbers[2] = 2 * 3 = 6
.
.
i = 39, numbers[39] = 39 * 3 = 117
Create another for loop that iterates 40 times and prints the values in the numbers array
Computer Architecture
1. Define what a "word" is in computer architecture:
A. The size (number of bits) of the address
B. The total number of bits of an instruction (e.g. 16 bits)
C. Word and width are synonymous.
D. A word is the contents of a memory register.
2. What is the difference between a register’s width and a register’s address? (choose all that apply - there may be more than one correct answer)
A. They are both the same!
B. Address is the same for all registers, width is unique for each register.
C. Width is the amount of data a single register holds, address is the location of the register within a larger chip.
D. The address bits of a register is a logarithm of its width.
3. Which of the following is NOT implemented by the Program Counter?
A. Set the counter to 0.
B. Increase the counter by 1.
C. Decrease the counter by 1.
D. Set the counter to any input value.
4. What is the relationship between the size of the address (number of bits) and the word size for memory registers?
A. address bits = 2^(word size)
B. address bits = word size ^ 2
C. address bits = word size
D. address bits = log2(word size)
E. address bits = (word size) / 2
Answer:
BADDA
Explanation:
BIIING
Which software programs should students avoid using to create and submit course work? (Choose all that apply). Word, Pages, Numbers, Keynote
Answer:
tyafana
Explan
ation:n umbers
What game is this? helpppppp
Answer:
the sims lol
Explanation:
Write an expression that will print "in high school" if the value of user_grade is between 9 and 12 (inclusive).
In python:
if 8 < user_grade < 13:
print("in high school")
You would just need to supply the value of the user_grade variable.
A network the size of the Internet requires DNS services in order to function. Discuss the advantages and disadvantages of implementing DNS relative to the size of the network.
Answer:
Advantages
Host Naming : For DNS Implementation there is no need to create and maintain a local names configuration file also there is no need to understand complex Oracle Names administration procedures and this because the name of the host is sufficient enough for one to establish a connectionLocal Naming : It's relative easier to resolve service name addresses and also across different protocolsDisadvantages
Host Naming : The disadvantage is that your client and the server connects making use of TCIP/IPLocal Naming : The disadvantage as regards to local naming is that it will require the local configuration of all service and address name changes to carry out local namingExplanation:
Advantages
Host Naming : For DNS Implementation there is no need to create and maintain a local names configuration file also there is no need to understand complex Oracle Names administration procedures and this because the name of the host is sufficient enough for one to establish a connectionLocal Naming : It's relative easier to resolve service name addresses and also across different protocolsDisadvantages
Host Naming : The disadvantage is that your client and the server connects making use of TCIP/IPLocal Naming : The disadvantage as regards to local naming is that it will require the local configuration of all service and address name changes to carry out local namingWhat was that show where lowe’s were based off eye colors and the main character had orange eyes that let her mind control people. It was either on netflix or hulu
Answer:Raising Dion?
Explanation:
Was it Raising Dion?
what is the CPU's role?
Answer:
The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program. The computer industry used the term "central processing unit" as early as 1955.
Answer:
The Cpu is like the brain of the computer it's responsible for everything from running a program to solving a complex math equation.
Consider an instruction within a certain instruction-set architecture (ISA): ADD R1, R2, R3. This instruction adds the value in Register R1 with the value in Register R2, and stores the result in Register R3. What is the maximum number of physical memory accesses that may be caused by this single instruction?
a) 1
b) 2
c) 3
d) 4
Answer:
C = 3
Explanation:
The maximum number of physical memory accesses that may be caused by this single instruction is ; 3
This is because In the case of loading two values into R2 and R3 there is need for their memories to be accessed and after execution R1 value there will be a write back into memory hence another memory is also accessed and that makes the number of Physical memories accessed to be three(3) in Total
Which of the following server types is in the form of a single circuit board?
a. blade
b. tower
O c. rack
O d. dedicated
o
Answer:
A. Blade
Explanation:
Server Blade means a complete computer system on a single board which includes one or more CPUs, memory, operating system, network connections, and typically includes access to hard drives or other mass storage devices. A Server Blade is designed to be inserted into a space-saving rack, and each rack may contain a number of Server Blades served by one or more power supplies.
If this is multiple choice, a dedicated server can be too.