Your brother used your computer to complete his homework last night, and now your login password no longer works. What question frames your problem into a question to help reach a solution? What is wrong with my brother? Did this computer get a virus? Why is this computer broken? Did my brother change the password? IF CORRECT 5 STARS AND A THANKS

Answers

Answer 1

Answer:

Chances are your brother probably changed the password to mess with you. so i would recommend to interrogate the heck out of him and hope for the best.

Explanation:

Answer 2

Answer:

Did my brother change the password?

hope this helps  :)


Related Questions

PLEASE HELP ITS DUE SOON!!
How do software and hardware work together

A. As a function

B. As a program

C. As a system

D. As a standard

Answers

Answer:

C. As a system.

Explanation:

Software and hardware work together as a system to perform a specific task or a set of tasks. Hardware refers to the physical components of a computer system, such as the processor, memory, hard drive, keyboard, and mouse, while software refers to the instructions, data, and programs that are stored on the hardware and used to perform specific tasks. The hardware provides the platform and resources for the software to run, and the software controls and utilizes the hardware to execute tasks. The two work together in a coordinated manner to achieve the desired outcomes

C.As a system
This is answer

Help me please its urgent I need it done asap

Help me please its urgent I need it done asap

Answers

Answer:

The four factors judges consider are:

1. the purpose and character of your use

2. the nature of the copyrighted work

3. the amount and substantiality of the portion taken

4. the effect of the use upon the potential market.

duration of protection least 60-70 years

and original idea of works (not copied or influenced by others)

The idea came out first then the similar format( ex: Coke came out before Pepsi both has a similar idea of soda/drinks)

"Copyright" literally means the right to copy but has come to mean that body of exclusive rights granted by law to copyright owners for protection of their work.

Explanation:

Answer:

The four factors judges consider are:

1. the purpose and character of your use

2. the nature of the copyrighted work

3. the amount and substantiality of the portion taken

4. the effect of the use upon the potential market.

Duration of protection least 60-70 years and original idea of works.

A copyright is a collection of rights that automatically vest to someone who creates an original work of authorship like a literary work, song, movie or software.

Explanation:

What is the best definition of dialect? will pay give me your cash app

a way of speaking that makes the actors’ lines easier to hear
a way of speaking that is specific to a certain group or location
a method of acting that relies on an actor’s own experiences
a method of acting that helps the audience follow the plot

Answers

In my opinion i think the best definition of dialect would be “a way of speaking that is specific to a certain group or location”:)
Specific group or urgent matter

ASAP PLS
Studying how air currents affect the weather is an example of _____. modeling science prototyping technology

Answers

Answer:

E⁣⁣⁣xplanation i⁣⁣⁣s i⁣⁣⁣n a f⁣⁣⁣ile

Socratic

Explanation:

The answer is socatric

if you were determining what was expected of you simply by looking at media, what messages would you take away?

Answers

I would take away any messages about body image. People expect all women and even men to be skinny and that is viewed as healthy and the norm. We were taught at a young age that the societal expectation for “normal” is someone super skinny and with an hour glass figure and or a six pack. Thats why i would take away messages about body image
anything hateful,especially towards gender, race, sexuality, gender roles, ect

Please help I need some one that knows about the article Disney Imagineer because I wasn't in school today so please help me write 2 paragraphs about it please. Help this is due at 11:59 PM

Read the article (Disney Imagineer) in class and write 2 paragraphs.​

Answers

Answer:

I don't know much but I looked up some stuff about the Article.

River of the light-

When park-goers swarm Walt Disney World's Animal Kingdom later this month, Joe Rohde will be paying close attention.

The executive designer and vice president of Walt Disney Imagineering Creative has spent the last eight years overseeing the expansion of Disney's Animal Kingdom park, including its soon-to-be unveiled evening spectacle, "Rivers of Light." Rohde, a Disney veteran who said he started “at the bottom of the design ladder” in 1980, has also been leading the charge on Disney's "Avatar"-themed land, based on James Cameron's 2009 top-grossing film, which is slated to debut in 2017. The first of four planned sequels to Cameron's movie based on the fantastical world of Pandora will hit theaters a year later.

Rohde has overseen the development of Disney's "Avatar"-inspired land, seen in this illustration, which is scheduled to open at Animal Kingdom in 2017.-

Rohde likened the process of developing and constructing a major attraction to filming a major blockbuster film. The whole investment -- from "the morning of conceptualization to opening day" can take anywhere from four to five years, Rohde told ABC News. And in the case of Animal Kingdom, incorporating live animals can lead to other challenges.

"The inclusion of live animals changes design standards ... but it brings realism to design," he said in a phone interview. "Nature is a supreme, immutable value."

The millions of visitors who travel to Disney’s theme parks around the world -- more than 134 million in 2014, according to the Themed Entertainment Association (TEA), an industry trade group -- are not privy to the trials and tribulations of what it takes to bring an idea to fruition at Disney. Imagineers, as they're referred to at Disney, prefer it that way.

"We try to be invisible," Theron Skees, executive creative director for Walt Disney Imagineering, said in an interview.-

Skees started his Disney career painting artificial grottos and tunnels at Disneyland Paris' Pirates of the Caribbean attraction. Skees, who previously worked as a sculptor and set designer in film and commercials, has lived on three continents as a Disney imagineer, tasked with bringing the visions and interpretations of Disney characters and stories to life. The imagineering division, one of the most competitive and challenging practices within the Disney universe, has the sole responsibility of delivering "the magic" that visitors seek year after year. There are at least 1,500 imagineers currently in the company, according to a Disney spokesperson, with 140 disciplines within the group.

"There's the technical know-how, the creative vision, the planners and the operators," Skees said. "Imagineering is a pretty specialized group that requires a specialized mindset."-

And loners need not apply.

"You have to communicate and get an idea out there, whether that's painting, building or drawing models," Rohde added. "The ability to collaborate as a group is a must."

Skees reiterates that every imagineer is encouraged to submit ideas -- whether that’s for a new roller coaster, a live performance or costume design at one of the theme parks, hotels or Disney cruises.

“All ideas go through a process and it’s not exclusive to one person,” he noted.

Ideas can come from anywhere. Rohde immerses himself in books -- non-fiction, art history, neurology -- and vows to plow through the 35 stacked next to his bed, soon-to-be additions to his personal library of 5,000 books.

To be successful in this career “you need to find smart people to work under you and to read a lot,” he explained. Traveling the world? A necessity.

“We’re not making two-dimensional products. You need to know what places are really like,” he added.

Disney is the parent company of ABC News.

Hope you can get your work in on time.

Thank you for your answer!

PLEASE HELP ME Write a 150-word paragraph about five of the zaniest and/or most novel ways you’ve found online that people earn incomes. Keep in mind that the sites should not be corporate sites. We are looking for unique niches. Have fun. We think you will be surprised when you see what people are willing to pay for online.

Answers

playing games. on some apps, you can win money for platings

Answer: Disney and video games winning ratings can produced a vast amount of money, making into a job, that anyone could create for example becoming an actor or becoming a gamer.

we could go over the amount of time disney and other companies spent.

If you see these REPORT.

If you see these REPORT.

Answers

Woah that’s scary- thanks for letting me know!
Thank you I didn’t even know there was viruses!

Which statements correctly compare and contrast the Cut and Copy commands in PowerPoint? Check all that apply.

O Both use galleries to carry out tasks.
O Both are options found in the mini toolbar.
O Both use the Paste command to move text.
O Only the Cut command removes the text from its location.
O Only the Copy command stores information on the clipboard.

Answers

Answer:

If there are only two options, they are:

--- Both are options found in the mini toolbar.

--- Only the Copy command stores information on the clipboard.

If there can be three options, they are:

--- Both are options found in the mini toolbar.

--- Only the Copy command stores information on the clipboard.

--- Only the Cut command removes the text from its location.

The 1st and 3rd and last one

A ____ is an Access feature that makes it easy to enter data.

A ____ is an Access feature that makes it easy to enter data.

Answers

Answer forms is an access

Explanation:

mark brainliest

Answer: The answer is Forms

Explanation: The reason forms are used so often is that they're an easy way to guide people toward entering data correctly. When you enter information into a form in Access, the data goes exactly where the database designer wants it to go:  in one or more related tables. Forms make entering data easier.

Please mark branliest!

Chen was here

What is output?
Print (12 % 5)

Answer
0
5
2
1

Answers

It’s 5. Hope it helpsss
5 because most outputs are usually smaller then the input so that makes 5 the output

I NEED HELP!!!!!!!!!

I NEED HELP!!!!!!!!!

Answers

2nd: Look up the shelf where the book belongs

3rd: Move to the shelf where the book belongs

4th: Place the book on the shelf

Answer:

2nd Step is to -  Look up the shelf where the book belongs

3rd Step is to - Move to the shelf where the book belongs

4th Step is to - Place the book on the shelf

How does a resident virus differ from a non-resident virus? !!!25 POINTS!!!!!

A) Resident viruses simply disrupt operations while non-resident viruses will control hosts.

B)Resident viruses will control hosts while non-resident viruses simply disrupt operations.

C)Resident viruses find networks to infect while non-resident viruses load themselves into memory.

D)esident viruses load themselves into memory while non-resident viruses find networks to infect.

Answers

Answer:

The correct answer is **D)** Resident viruses load themselves into memory while non-resident viruses find networks to infect. A resident virus is a type of computer virus that’s deployed and resides within a computer’s random access memory (RAM). A non-resident computer virus, on the other hand, is a type of computer virus that doesn’t reside within a computer’s RAM. Non-resident computer viruses can still be deployed within RAM, but they don’t stay there.

D is the correct answer! :)

An example of how a merge code would appear in a letter would be _____.

Answers

Answer:

Space blank

Explanation:

It means the question needs you to answer the question

Answer:

An example of how a merge code would appear in a letter would be C i.e. /University_Name/. Explanation: Merge codes help speed up the method of making letters by inserting data into your letters.

Explanation:

I hope this helps

idrk if this is the right place to ask but im here anyway
so like every time i open my chromebook after closing it for more than 2/3 seconds, it says "chrome os is missing or damaged" and makes me sign back in
i think it started last week. i figured out how to turn my chromebook back on but i haven't been able to find anything to PERMANENTLY get rid of it. its driving me up the wall

Answers

If you open and close it that fast u have to damage it bc the force of closing and opening it that fast I don’t know how to fix it, but never open it and close that fast

You need to send your tecnology divice to manteinment for they look at it because that is an not anutual problem.

If you were a game programer (NOT using scratch or other basic software making platforms) what kind of code would you use for the game to run on all platforms (Assume the device being used to make the game is Windows 10) and how do you make it look like a pixelated or retro style game like UNDERTALE?

Answers

8bitworkshop.com. It wouldn’t give you like an undertale thing, but its still super 80s gaming aesthetic
Language C,C+, and C# would be used in this type on situation.

Have a great day.

Lian is asked to create a variable that will keep track of how many times the user has tried to enter their password. What kind of variable should be created?
a string variable
a binary variable
a user variable
an iteration variable

Answers

Answer:

a string variable

Explanation:

A. A string variable.

Reduce Re-use and Recycle!
Required Materials
OnlineGDB (login required)
Word processing software
Part A
One of the biggest benefits of writing code inside functions is that we can reuse the code. We simply call it whenever we need it!

Let’s take a look at a calculator program that could be rewritten in a more reusable way with functions. Notice that two floats (decimal numbers, but they can also include integers) are inputted by the user, as an operation that the user would like to do. A series of if statements are used to determine what operation the user has chosen, and then the answer is printed inside a formatted print statement.

num1 = float(input("Enter your first number: "))
num2 = float(input("Enter your second number: "))
operation = input("What operation would you like to do? Type add, subtract, multiply, or divide.")
if operation == "add":
print(num1, "+", num2,"=", num1 + num2)
elif operation == "subtract":
print(num1, "-", num2,"=", num1 - num2)
elif operation == "multiply":
print(num1, "*", num2,"=", num1 * num2)
elif operation == "divide":
print(num1, "/", num2,"=", num1 / num2)
else:
print("Not a valid operation.")
Your job is to rewrite the program using functions. We have already looked at a function that adds two numbers. Using that as a starting point, we could call the add function from within our program in this way:

if operation == "add":
result = add(num1, num2)
print(num1, "+", num2,"=",result)
Now it’s your turn to do the following:

Type all of the original code into a new file in OnlineGDB.
Copy the add function from the unit and paste it at the top of your program.
Write three additional functions: subtract, multiply, and divide. Pay careful attention to the parameters and return statement. Remember to put the three functions at the top of your Python program before your main code.
Rewrite the main code so that your functions are called.
Part B
There are many different ways that a user could tell us that they would like to add two numbers in our calculator program. The user could type “add”, “Add”, “ADD”, or “+”, to name a few possibilities. Of course, as humans, we know exactly what is meant, even if the word is capitalized. But the Python Interpreter can’t tell that “add” is the same as “Add”.

We can use a list to make our program a bit more robust. We can also use the IN operator to check for certain values in that list. Take a look at this if statement’s opening line:

if operation in ["add", "Add", "ADD", "+"]:
Make those changes in your program and verify that it works.
Consider all of the possible words the user might enter to subtract, multiply, or divide.
Rewrite the first lines of each of your if statements to use lists.
Thoroughly test your new program, trying out each of the four operations.
When you have tested your program, click the save button. Then click Share and copy the program link. Paste the link in a word processing document and submit using this unit’s dropbox. If your program does not work properly, also include a paragraph explaining what you did to troubleshoot it.

Answers

To rewrite the given calculator program using functions, you can follow these steps:

1. Start by copying all of the original code into a new file in OnlineGDB.

2. Copy the add function from the unit and paste it at the top of your program. This function should take two parameters, num1 and num2, and return the sum of the two numbers.

3. Write three additional functions: subtract, multiply, and divide. Each function should take two parameters and return the result of the corresponding operation. Here's an example of how you can implement the subtract function:

```

def subtract(num1, num2):

return num1 - num2

```

4. Put the four functions (add, subtract, multiply, and divide) at the top of your Python program before your main code.

5. Rewrite the main code to call the appropriate function based on the user's chosen operation. Use if statements to check the value of the operation variable and call the corresponding function. Here's an example of how you can modify the main code:

```

if operation == "add":

result = add(num1, num2)

print(num1, "+", num2, "=", result)

elif operation == "subtract":

result = subtract(num1, num2)

print(num1, "-", num2, "=", result)

elif operation == "multiply":

result = multiply(num1, num2)

print(num1, "*", num2, "=", result)

elif operation == "divide":

result = divide(num1, num2)

print(num1, "/", num2, "=", result)

else:

print("Not a valid operation.")

```

Now, let's move on to Part B.

To make the program more robust and accept different variations of the operation input, you can use lists and the in operator to check for certain values. Here's an example for the addition operation:

```

if operation.lower() in ["add", "+"]:

```

This will allow the program to accept variations such as "add", "Add", "ADD", or "+". You can apply the same approach to the subtract, multiply, and divide operations.

Remember to thoroughly test your program by trying out each of the four operations. Make sure to test different variations of the operation input to ensure that the program handles them correctly.

Once you have tested your program and it is working properly, save it and click the Share button. Copy the program link and paste it into a word processing document for submission.

If your program doesn't work properly, make sure to double-check your code for any errors or typos. You can also add print statements to debug and see the values of variables at different points in the program. If you're still having trouble, you can explain the steps you took to troubleshoot the program in your submission paragraph

All of the data in a digital book (letters, punctuation, spaces, etc) are stored and processed in a computer as binary. Break down how this works (hint: Ascii) . Explain in three or more sentences: Please Answer ASAP, Brainiest for Best and most In detail answer!!!!!

Answers

Can I have the Brainiest pls pls pls

PLEASE HELP!!! What is one game you think would be hard for computers to play? (AI)

Answers

Answer:

I would say the game "Go" because it requires intuition to play.

Explanation:

Answer:

I dont play much games but probaly a game you need to think outside of the box for

Explanation:

robots arent creative

Dr. Kim divides a programming class into groups. Each group will create a large program as their
final exam. To make this big project more manageable, which of these should the group use?
an algorithm creator
a binary translator
a text editor
top-down programming

Answers

an algorithm creator
An algorithm creator

Which statement assigns the value 99 to the variable myGrade in Python?


myGrade = 99

my Grade = 99

!myGrade = 99

myGrade == 99

Answers

Answer: I think that the answer is the first one, myGrade=99

Explanation:

THE FIRST ONE IS =99

IF I GIVE YOU BRAINLIST FOR THIS QUESTION YOU GIVE ME SOME TO OK what's the capital of Georgia

Answers

Answer:

Atlanta

Explanation:

hope this helps

Answer:

Atlanta

Explanation:

Lillian is a very accomplished typist and she's been practicing so that she can apply for a job as an executive assistant. How many words per minute is she probably aiming for?

Question 15 options:

200


50


100


30

Answers

Answer: about 50

Explanation: The average person can type 65-70 keys an hour so it would have to be 50
                     BTW thanks for friending me

Lillian is a very accomplished typist and she's been practicing so that she can apply for a job as an executive assistant. 50 words per minute is she probably aiming for.

What is the magnitude of the force?

The magnitude of force at point A is 79.1033 lb. Since FA < FA_max; Ladder will not slip

Given that;

∑'MA = 0

⇒ NB [Lsin∅] - W[L/2.cos∅] = 0

NB = W / 2tan∅ -------let this be equation 1

∑Fx = 0

⇒ FA - NB = 0

FA = NB

Therefore, from equation 1

FA = NB = W / 2tan∅

we substitute in our values

FA = NB = 76 / 2tan(60°) = 21.9393 lb

Now ∑Fy = 0

NA - W = 0

NA = W = 76 lb

Net force at A will be

FA' = √( NA² + FA²)

= √( (W)² + (W / 2tan∅)²)

we substitute in our values

FA' = √( (76)² + (21.9393)²)

= √( 5776 + 481.3328)

= √ 6257.3328

FA' = 79.1033 lb

Therefore,  the magnitude of force at point A is 79.1033 lb

Now maximum possible frictional force at A

FA_max = μ × NA

so, FA_max = 0.4 × 76

FA_max = 30.4 lb

So by comparing, we can easily see that the actual friction force required for keeping the the ladder stationary i.e (FA) is less than the maximum possible friction available at point A.

Therefore, Lillian is a very accomplished typist and she's been practicing so that she can apply for a job as an executive assistant. 50 words per minute is she probably aiming for.

Learn more about friction on:

https://brainly.com/question/9450295

#SPJ2

Today you will be researching three forms of technology.

1. Look up current happenings dealing with the following forms of technology: medical technology, construction technology and communication technology.

2. Read articles of current developments in each field of technology.

3. Write a (summary) of what you read/watch including what the technological development is, what it does, are there any trade offs (things given up for the development of that technology) and if you think, given the trade offs, the technology is worth any negative trade offs.

4. For the opinion part of your synopsis, back up your opinion with facts from the
article/video.

5. You must cite your sources (name of the article or video and what website it came from).

6. Write your (summary)

7. Remember to write in complete sentences

Answers

Answer:

why

Explanation:

How does binary code control the processes in a computer.

Answers

They control the computer this is because they both on the pc& the pc helps the computer & this is more likely to be the brain of the computer wich controls it

Binary systems employ the code to comprehend user input and operational instructions and to offer the user with an appropriate output.

What is binary system?

Binary system is defined as a numbering system where each digit can only have one of two values—0 or 1—and which serves as the foundation for all binary code used in computing systems. These systems make use of this code to decipher user input and operational directives and provide the user with the desired result.  

The binary is read from, say, disk and loaded into memory. The memory contents are then loaded into a processor local resister according to a directive issued by the processor logic to the memory controller. The CPU then interprets it as a command to execute.

Thus, binary systems employ the code to comprehend user input and operational instructions and to offer the user with an appropriate output.

To learn more about binary system, refer to the link below:

https://brainly.com/question/2824068

#SPJ2

ANSWER ASAP GIVING BRAINLIEST!

A mathematical calculation based upon the data in a spreadsheet is called a

A: Factor
B: Formula
C: Function
D: Factor
E; Equation

Answers

Answer:

B: Formula

Explanation:

Formula. An equation that performs mathematical calculations on values in a worksheet. Number values. Constant values consisting of only numbers. Cell address.

A mathematical calculation based upon the data in a spreadsheet is called a B: Formula.

What is the formula?

In Microsoft Excel, a component is an expression that operates on values in quite a number of cells. These formulations go back a result, even if it's miles an error. Excel formulation allows you to carry out calculations along with addition, subtraction, multiplication, and division.

A spreadsheet is a software program software you operate to without problems carry out mathematical calculations on statistical facts and totaling lengthy columns of numbers or figure out probabilities and averages.

Read more about the formula:

https://brainly.com/question/657646

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1. Why is it important to know how to create a slide?

2. How can you utilize the knowledge in making a slide as a student?​

in own sentence pls

Answers

1. Knowing how to create a slide is important because it is a useful tool for organizing and presenting information in a visual and engaging way, which can help to enhance communication and understanding.

2. As a student, knowing how to create a slide can be beneficial for presenting research findings, summarizing key information, and organizing study materials in a clear and visually appealing way to aid in the learning process.

Answer:

1. Because slides help in improving visual aids. It improves understanding when teaching student.

2. You can make projects, shows, teach others, and play with it just for fun

Explanation:

What are are technologies, products, and processes developed with NASA technology, funding and/or expertise? first person gets brain listed.

Answers

Answer:  NASA spinoffs are technologies, products, and processes developed with NASA technology.

Explanation:  NASA spinoffs are technologies, products, and processes developed with NASA technology, funding and/or expertise. This program is run by the Technology Transfer office within STMD.

NASA spinoffs are technologies, products, and processes developed with NASA technology.

Able to make a survey form using VB (Visual basics 6.0) to represent ways of conservation of
energy.

(I know what a survey means but how do u make questions to represent ways of conservation of energy? [I also know how to use the resources in the app]
Somebody please give me some ideas it will help me)

Answers

40 is the right answer
The correct answer is 40
Other Questions
Express 20 as a percent and a decimal?? Angie and Kenny play online video games. Angie buys 1 software package and 4 months of gameplay. Kenny buys 1 software package and 1 month of game play. Each software package cost $35. If their total cost is $150, what is the total cost of one month of gameplay? 7. (-/1 Points] DETAILS Consider the following. U = 2i + 5j, v = 8i + 7j mer (a) Find the projection of u onto v. (b) Find the vector component of u orthogonal to v. (-/1 Points] DETAILS MY NOTES PRACTICE ANOT A car is towed using a force of 1400 newtons. The chain used to pull the car makes a 21 angle with the horizontal. Find the work done in towing the car 9 kilometers. (Round yo answer to one decimal place.) km-N Need Help? Read it Watch It A procedure has an 81% success rate. The procedure is tried on 12 patients what is the probability that at least 8 patients show improvement to what potential should you charge a 4.0 f capacitor to store 2.0 j of energy? Class 8 Cbse Ncert Revision Question's1) When a ball pen refill is rubbed vigorously against polythene, it attractssmall pieces of paper. What makes the refill attract paper?2) Write the use of an electroscope. 3) Explain the purification of copper using electrolysis with the help of anelectric circuit. 4) Write any two uses of electrolysis. 5) Why are multiple images formed when two mirrors are placed at rightangles to each other?6) Why should we not stand under a tree when there is thunder andlightning?7) We electroplate metals with chromium to make car parts, bath taps,kitchen gas burners etc. Why is chromium itself not used for makingthese materials?8) Describe the chemical effect of current on water with the help of adiagram. 9)Paheli wants to deposit silver on an iron spoon. She took silver nitrate(AgNO3) solution in a beaker and set up a simple circuit forelectroplating. Which terminal of the battery should the spoon beconnected to? What material should the other electrode be made of?10) An electric current is passed through a conducting solution. List anythree possible observations. 11) What happens to light when it gets dispersed? Give an example. 12) How are the eyes of the day birds different from night birds? the general data protection regulation (gdpr) only applies to select eu member states. a. true b. false What do lines of latitude measure? Prove that if n is an odd integer, then n^2 + 1 is an even integer. Select the correct answer.There are a variety of treatments available for people struggling with drug abuse. One type of treatment includes withdrawicompletely from drug use.Which treatment best describes this process?A. therapeutic communityB. detoxificationC. maintenance therapyC. supervised medication brooke has been experiencing a period of rapid pubertal change. brooke is in which phase of adolescence? look at the pictures What did Confucianism encourage in the Han political structure?A.loyalty and obedience B. Competition and ethics C. bribery and dishonesty D. morality and harsh punishment Find the length of [tex]30kx^{2} +6kx^{2}[/tex] What is the area of this face? Iready, Surface Area of Composed Figures. does a rectangle exist with the given dimensions if y=2 explain pleaseeeeeeeee Islam During the Soviet Period heyyy guys i rly need to talk to someone im rly sad and i have no one else to talk to it about -33 - 4x = 2 - 3(4x - 7) how does sunlight cause cracks in the street