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3 years ago

Museum web sites are generally good resources for information. A.) True B.) False

Computers and Technology

2 answers:

Hatshy [7]3 years ago

8 0

True. Museums usually specialize in one area in specifics.

Ex. WWII Museums give great historical info on WWII

Viefleur [7K]3 years ago

8 0

The correct answer is true

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Please help!! thank you so much!! <3

Zepler [3.9K]

Answer:

D. 4x as much

Explanation:

The answer is pretty simple. The question is asking about 10m/s and 20m/s right? Take a look at the energy at each point on the graph. At 10m/s the kinetic energy is 100 on the graph. At 20m/s the kinetic energy is 400. You'll notice that 100 x 4 is 400 - That's the answer.

You can also prove this mathematically. The formula for kinetic energy is

$\frac{1}{2}mv^2$

The question says: constant mass so we can ignore that for now.

(1/2) * 10^2 is (1/2) * 100 = 50

for the 20m/s ball it would be

(1/2) * 20^2 = 400 * 1/2 = 200

Once again, you see that it is 4x

3 0

3 years ago

Read 2 more answers

1. Implement a method factorial(int n), that takes a number (int) and returns its factorial. Factorial of an integer is the prod

marysya [2.9K]

Answer:

import java.io.*;

import java.util.*;

public class Main

{

public static int factorial(int n){

if (n == 0)

return 1;

else

return(n * factorial(n-1)); //recursively calling factorial function

}

public static void fibbonaci(int n)

{

if(n>0)

{

c=a+b; //next term in series

a=b;

b=c;

System.out.print(" "+c);

fibbonaci(n-1); //recursively calling fibbonaci function

}

static int a=0,b=1,c;

public static void main(String[] args) {

int list_num,fact;

List<Integer> num=Arrays.asList(1,3,5,7,9); //arraylist with 1,3,5,7,9

for(Integer i:num) //for-each loop

{

a=0;

b=1;

list_num=i.intValue();

System.out.println("Fibbonaci series for "+list_num);

System.out.print(a+" "+b);

fibbonaci(list_num-2); //calling fibbonaci for values in list

fact=factorial(list_num); //calling factorial for values in list

System.out.println();

System.out.println("Factorial for "+list_num+" is "+fact);

System.out.println();

}

6 0

3 years ago

Which statement gives an advantage of multicellular organisms?

slava [35]

Answer:

D and B

Explanation:

Multicellular organisms thus have the competitive advantages of an increase in size without its limitations. They can have longer lifespans as they can continue living when individual cells die. Multicellularity also permits increasing complexity by allowing differentiation of cell types within one organism.

4 0

2 years ago

Read 2 more answers

A method countDigits(int num) of class Digits returns the remainder when the input argument num(num > 0) is divided by the nu

sertanlavr [38]

Answer:

#include <iostream>

using namespace std;

class Digits

{

public:

int num;

int read() //method to read num from user

{

cout<<"Enter number(>0)\n";

cin>>num;

return num;

}

int digit_count(int num) //method to count number of digits of num

{

int count=0;

while(num>0) //loop till num>0

{

num/=10;

count++; //counter which counts number of digits

}

return count;

}

int countDigits(int num) //method to return remainder

{

int c=digit_count(num); //calls method inside method

return num%c;

}

};

int main()

{

Digits d; //object of class Digits is created

int number=d.read(); //num is read from user

cout<<"\nRemainder is : "<<d.countDigits(number); //used to find remainder

return 0;

}

Output :

Enter number(>0)

343

Remainder is : 1

Explanation:

As program is missing to find errors , a logically write program is written to find the remainder when a number is divided by its number of digits. A class Digits is constructed which has public variable num and methods read(), digit_count(), countDigits().

read() - This method reads value of num from the user and return num.
digit_count() - This method takes a integer as parameter and counts the number of digits of a number passed as argument. while loop is used to increement the counter until num<0. This returns the value of count.
countDigits() - This method takes a integer as a parameter and returns remainder when the argument is divided by number of digits of argument. Number of digits is calculated by using method digit_count().

At last in main method , object of Digits class is created and its methods are used to find the output.

7 0

3 years ago

Differences between mechanical and optical mouse <br>Plz help me

lutik1710 [3]

Mechanical mouse has a ball that turns rollers inside. If friction is lost between the ball and the mousing surface, or between the ball and the rollers, the mouse fails to work. In order to assure good contact with the mousing surface, the ball must be fairly heavy. When you change directions with the mouse, you must make the ball change rolling directions--an action that inertia likes to prevent.

An optical mouse makes use of an LED and some optics to detect surface texture and the changes in it as the mouse is moved. There are no moving parts

7 0

3 years ago