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Dimas [21]
2 years ago
14

Light travels at 3 × 108 meters per second. A light-year is the distance a light beam travels in one year.Write a PYTHON program

that calculates and displays the value of a light-year.Useful facts:Seconds in a year = 365×24×602Rate = 3×108meters per second
Computers and Technology
1 answer:
Art [367]2 years ago
4 0

Answer: This is a python code

def lightyear():

   rate=3*100000000   //speed of light

   seconds=365*24*60*60   //number of seconds in 1 year

   return str((rate*seconds)/1000)+" km"    //distance=speed x time

print(lightyear()) //will print value of light hear in kilometers

OUTPUT :

9460800000000.0 km

Explanation:

In the above code, there is a variable rate, which stores the speed of light, i.e. distance traveled by light in 1 second which is in meters. Another variable is seconds, which store the number of seconds in 1 year, which is no of days in 1 year multiplied by the number of hours in a day multiplied by the number of minutes in an hour multiplied by the number of seconds in a minute. Finally, distance is speed multiplied by time, so distance is printed in kilometers and to convert distance in kilometers it is divided by 1000.

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Explanation:

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Answer:

#include <iostream>

#include <cstdlib>

using namespace std;

char grade(double marks){

   if(marks>=90)

   {

       return 'A';

   }

   else if (marks >=80 && marks<90)

   {

       return 'B';

   }

   

   else if (marks >=70 && marks<80)

   {

       return 'C';

   }

   

   else if (marks >=60 && marks<70)

   {

       return 'D';

   }

     else if ( marks<60)

   {

       return 'F';

   }

}

int main()

{

   double marks;

cout <<"Ener marks";

cin >>marks;

char grd=grade(marks);

cout<<"Grae is "<<grd;

return 0;

}

Explanation:

Take input from user for grades in double type variable. Write function grade that takes a parameter of type double as input. Inside grade function write if statements defining ranges for the grades. Which if statement s true for given marks it returns grade value.

In main declare a variable grd and store function returned value in it.

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When you connect to an unsecured wireless network, what might dishonest or unscrupulous computer users try to do?
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An absolute cell reference.
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Complete this truth Table. Write a program that you can enter from the keyboard, a 1 or 0 into three Boolean variables, A,B,C. W
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Answer:

Following are the code to this question:

#include<stdio.h>//defining header file

int AND(int x,int y) //defining a method AND that hold two variable in its parameter

{

if(x==1 && y==1)//defining if block to check x and y value is equal to 1

{

return 1;//return value 1

}

else //defining else block

{

   return 0;//return value 0

}

}

int OR(int x,int y)//defining method OR that hold two variable in its parameter

{

if(x==0&&y==0)//defining if block to check x and y value is equal to 1

{

return 0;//return value 0

}

else //defining else block

{

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}

}

int main()//defining main method

{

int a,b,c;//defining integer variable  

int k=1;//defining integer variable k that holds a value 1

while(k<=8)//defining while loop for 8 time input

{

printf("Please insert 3 numbers in (0 0r 1):\n ");//print message

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printf("value: %d\n",AND(OR(a,b),c));

}

return 0;

}

Output:

please find the attachment.

Explanation:

In the above-given C language code two methods "AND and OR" is declared, holds two integer variable "x and y" in its parameters, inside the method a conditional it used that can be defined as follows:

  • In the AND method, inside a conditional statement, if block check x and y both value is same that is 1 it will return 1 or it will goto else block in this it will return value 0.      
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  • In the main method, four integers "a,b,c, and k" is declared in which variable "a, b, c" is used in the loop for 8 times input values from the user and print method is used to call the method and prints its return values.

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