A typeface in which each character has the same width and is often used to display programming code is

In most languages, if a file does not exist and a program attempts to open it in append mode, what happens?

chubhunter [2.5K]

Answer:

It create a new file in which writing of data begins.

Explanation:

A file can be open in the three mode:

-r (Read mode): open an existing file for the purpose of reading data from it.

-w (write mode): Create a new file for the purpose of writing data to it.

-a (append mode): open an existing file for the purpose of appending extra data to it but if the file does not exist, it create a new file and start writing data to it.

5 0

4 years ago

If a star system 30 parsecs distant is found to be broadcasting intelligent radio signals, then their news is already approximat

IrinaK [193]

Answer:

97.85 years, approximately.

Explanation:

Light travels at a constant speed of 186,000 mi/seg or 300,000km/seg accross the Universe (in vacuum conditions). Radio waves are also part of the electromagnetic spectrum, and they also travel at the same speed as Light does.

A light-year is a measure of the distance that Light travels during a year, that is, 5.88 trillion miles. Light travels the same distance per year because its speed is constant, and this is an excellent property that scientists take advantage to measure distances.

A parsec is 3.26 light-years (19 trillion miles), and (a very important datum to solve this question) one light-year is 0.306601 parsec, that is, in a year Light travels 0.306601 parsec at a constant speed. The same would happen with intelligent radio signals broadcasted from a distant star system.

So, considering all these facts, it is a matter of proportions to solve this question (mostly because speed of Light is constant):

$\frac{1 year}{0.306601 parsec} = \frac{X years}{30 parsecs}$

$x =\frac{1 year * 30 parsec}{0.306601 parsec}$

$x = \frac{30}{0.306601} years$

x = 97.84704 years or,

x = 97.85 years, approximately.

In other words, Light spends 97.85 years (terrestials) to travel 30 parsecs.

Likewise, radio waves travel at the same speed, so they spend the same years (97.85 years) travelling across the Universe to be finally detected by a radiotelescope located, for instance, here, in our planet.

Finally, the star system broadcasted intelligent radio signal with 'news' that are already approximately 97.85 years old'.

6 0

3 years ago

Consider two communication technologies that use the same bandwidth, but Technology B has twice the SNR of technology A. If tech

MrRissso [65]

Answer:

55kbps

Explanation:

7 0

4 years ago

A listing of all the methods that are in the execution chain when an exception is thrown is called a(n) ____.

wolverine [178]

A(n) stack trace is a list of all the steps that make up the performance chain when an exception is thrown.

<h3>What exactly is a stack trace?</h3>

A stack trace is a report of the active stack frames at a specific point in the execution of a program in computing (also known as a stack backtrace or stack traceback).
Memory is frequently dynamically allocated in two locations during program execution: the stack and the heap.
As implied by their names, memory is continually allocated on a stack but not on a heap.
This stack is known as the program's function call stack in order to distinguish it from the programming construct stack, which is another term for stack.
In terms of technology, after a memory block has been assigned

To learn more about stack trace, refer to:

brainly.com/question/15886149

#SPJ4

4 0

2 years ago

Always adjust mirrors after adjusting your seat. a. True b. False

almond37 [142]

True - it's important to always adjust mirrors after adjusting the position of your seat in the car when driving. This is essential to ensure you have a good view of the road and are able to spot possible hazards and park correctly.

4 0

3 years ago

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A typeface in which each character has the same width and is often used to display programming code is _