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3 years ago

What simple machine is most often used to lift the blinds on a window?

2 answers:

8 0

The answer would be a pulley... Most blinds have little strings, which you grab and pull down which pull up the blinds... exactly like a pulley system, a lever isn't correct you don't pull a lever to the right and boom it opens up(There may actually be windows like that but it says MOST often) a wedge makes no sense, a wedge is something u might stick under a door to stop it. An inclined plane... think of a hill.. does that make ANY sense at all to help lift a window? i mean it does the tiniest bit but no it otherwise doesn't therefore the answer would be B. I hope I've helped

erma4kov [3.2K]3 years ago

4 0

The answer would be a pulley. Hope this helps

You might be interested in

Which algorithm makes the most efficient use ofmemory?

SashulF [63]

Answer:

Best-fit Algorithm

Explanation:

Best-fit: Allocating the smallest memory location that is greater than or equal to the size of process.

Example

Let these are the memory locations-210kb,310kb,260kb,610kb

and size of processes-160kb,450kb,250kb,300kb

For the first-fit,

We allocate 160 kb to the 210kb memory location

Then, we allocate 450 kb to the 610kb because others don't have the size.

Then,we allocate 250kb to the 310 kb.

300 kb will stop,as no memory locations can execute.

For the Best-fit,

We allocate 160 kb to the 210kb memory location

Then,we allocate 450kb to the 610kb.

Then,we allocate 250kb to the 260kb not 310kb according to best-fit.

Then we allocate 300kb to the 310kb.

For the worst fit,

We allocate 160 kb to the 610kb memory location according to the worst-fit algorithm.

Then,we can't allocate 450kb to any memory location.

Then,we allocate 250kb to the 310kb .

We can' allocate 300kb in 260kb memory location.

As we can see from this example that in First-fit algorithm 300kb process will stop as no memory location is there.

In worst-fit algorithm ,We can't allocate 450kb,300kb to any memory locations.

In Best-fit algorithm,we can allocate the process to each location,so this algorithm is using memory in a efficient way.

5 0

3 years ago

Why do TV shows/Movies from the 90's and early 2000s look so much different compared to today?

icang [17]

Back then, movies were black and white because they had cameras that could only see black and white. In the late 1900's and early 2000's, they developed color cameras. But the common resolution and screen size was 640x480 or 4:3. Nowadays, in the late 2000's and early 2010, the widescreen format was more commonly used for many reasons. Today, the common colors are RGB 1M colors, and the resolution is 16:9. Some movies like to go even farther, like me, and use 21:9,which is super widescreen. That is more immersive than 16:9, and gives the watcher a wider, better experience.

7 0

3 years ago

You want to create a directory called ~/Documents/papers, but you’re not sure that the ~/Documents directory exists. What comman

SCORPION-xisa [38]

Answer: e) mkdir -p ~/Documents/papers

Explanation:

As the question says we want to create a directory called ~/Documents/papers, but we are not sure whether it exist or not so we would type the command for making directory starting with mkdir.

Here mkdir means make directory. Followed by mkdir we will use -p. Here p is used to create all the directories for getting us the directory we want and its advantage is that it would ignore all the errors if the directory already exist.

Followed by the name of the directory that we want to create.

So the desired answer for the given condition would be mkdir -p ~/Documents/papers

5 0

2 years ago

Namespaces cannot have namespaces as members. True False

Anna71 [15]

Answer:

False

Explanation:

namespaces can be nested. That is we can have a hierarchy of namespaces.

For examples suppose we have a namespace top. Within this we have another namespace first. At the next level we have a namespace called second. Then we have a class MyClass as a member of this namespace second. Then the complete description of the class will be as follows:

top::first::second::MyClass

5 0

3 years ago

Which wireless communication is typically limited to six feet of distance?

Anni [7]

Answer:

nfc

Explanation:

8 0

3 years ago