Yeah help me please......................

Which technology can allow a single ground-based telescope to achieve images as sharp as those from the Hubble Space Telescope?

Ganezh [65]

Answer:

The correct answer to the following question will be "Adaptive Optics".

Explanation:

AO (Adaptive Optics) is a technique used to enhance optical system performance by reducing the impact of incoming gravitational wave distortions by compressing a mirror to compensate for the distortion.
It operates by calculating and compensating for defects in a wave-front with a system that corrects these errors as a deformable mirror or even a liquid crystal collection.

It is a technique that can make it possible for a single ground-based telescope to get images as clear as that of the Hubble Space Telescope.

Certain methods can achieve power resolution that exceeds the limit set by atmospheric distortion, for example, Aperture synthesis, Lucky imaging, and Speckle imaging.

Therefore, Adaptive Optics is the right answer.

7 0

3 years ago

Which device or appliance emits radio waves

ale4655 [162]

There are multiple devices that emit radio waves. The most obvious is are radiod and microwaves (yes, the food cooker). Wireless applicances also emit radio waves. But don't confuse everything to use microwaves. Some applicances use frequencies instead of radio waves. Some applicances that use frequencies are toy control remotes and a garage door.

I hope this helps! Please make sure ask me if you need more clarity!

8 0

2 years ago

Write a program that replaces words in a sentence. The input begins with an integer indicating the number of word replacement pa

kramer

Answer: provided in the explanation segment

Explanation:

This is the code to run the program:

CODE:

//Input: 3 automobile car manufacturer maker children kids

//15 The automobile manufacturer recommends car seats for children if the automobile doesn't already have one.

import java.util.Scanner;

public class LabProgram{

public static int findWordInWordList(String[] wordList, String wordToFind, int numInList) {

for (int i = 0; i < numInList; i++) {

if (wordList[i].equals(wordToFind)) {

return i;

}

return -1;

}

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

String[] original_String = new String[20];

String[] modified_String = new String[20];

int numInList = scan.nextInt();

for (int i = 0; i < numInList; i++) {

original_String[i] = scan.next();

modified_String[i] = scan.next();

}

int num_Of_Words = scan.nextInt();

String[] words_To_Replace = new String[num_Of_Words];

for (int i = 0; i < num_Of_Words; i++) {

words_To_Replace[i] = scan.next();

}

int indx;

for (int i = 0; i < num_Of_Words; i++) {

indx = findWordInWordList(original_String, words_To_Replace[i], numInList);

if (indx != -1)

words_To_Replace[i] = modified_String[indx];

}

for (int i = 0; i < num_Of_Words; i++)

System.out.print(words_To_Replace[i] + " ");

System.out.println();

scan.close();

}

cheers i hope this helps!!!!1

3 0

3 years ago

Suppose that the format for license plates in a certain state is two letters followed by four numbers. (a) How many different pl

Ymorist [56]

Answer:

(a) 6,760,000 plates

(b) 3,407,040 plates

(c) 6,084,000 plates

Explanation:

The very first thing to note about this question is the number of characters involved in the license plate format (6 characters in this case; 2 letters and 4 numbers). The letters come first and then the numbers follow.

There are a total of 26 possible letters (A-Z) and 10 possible numbers (0 - 9) that can be chosen. We can then proceed to the first question;

(a) Here, the total number of possible plates is to be determined. This is done as follows:

Character 1 (Letter): There are 26 possible letters

Character 2 (Letter): There are 26 possible letters

Character 3 (number): There are 10 possible numbers

Character 4 (number): There are 10 possible numbers

Character 5 (number): There are 10 possible numbers

Character 6 (number): There are 10 possible numbers

So, total number of different plates will be obtained by multiplying all the possibilities: 26 × 26 × 10 × 10 × 10 × 10 = 6,760,000 plates

(b) This second part puts a constraint on the usage of the numbers, unlike the question (a), where there was no constraint at all.

Since there is no constraint on the letters, we can write that:

Character 1 (Letter): There are 26 possible letters

Character 2 (Letter): There are 26 possible letters

For the first number as well, we can write:

Character 3 (number): There are 10 possible numbers

However, for the remaining characters, the possibilities will continually reduce by a value of 1, since we can not use a number that has been used before. So,

Character 4 (number): There are 9 possible numbers

Character 5 (number): There are 8 possible numbers

Character 6 (number): There are 7 possible numbers

So, total number of different plates will be: 26 × 26 × 10 × 9 × 8 × 7 = 3,407,040 plates

(c) Here, repetitions are allowed as in questions (a), but there can not be four zeros. This implies that the maximum number of zeros in any plate will be three. Thus, there will be maximum possibilities on all characters until the last one which will be constrained.

Character 1 (Letter): There are 26 possible letters

Character 2 (Letter): There are 26 possible letters

Character 3 (number): There are 10 possible numbers

Character 4 (number): There are 10 possible numbers

Character 5 (number): There are 10 possible numbers

Character 6 (number): There are 9 possible numbers

Total number of plates will therefore be: 26 × 26 × 10 × 10 × 10 × 9 = 6,084,000 plates.

7 0

2 years ago

Select the correct answer.

9966 [12]

Answer:

B

Explanation:

Every HTML document must begin with a declaration of what the document is going to be about.

4 0

1 year ago