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alexandr402 [8]

2 years ago

8

The owner creator of a folder/file object has complete access to the object even when no user or group is assigned any access to

the object.
a. True
b. False

Computers and Technology

1 answer:

ella [17]2 years ago

3 0

Answer:

it’s true

Explanation:

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Clara should use computer lenses and artifical tears.

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How to upgrade brainly membership

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3 years ago

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This function returns the length of a string:

Anna71 [15]

Answer:

The strlen() function calculates the length of a given string.The strlen() function is defined in string.h header file.

Explanation:

It doesn’t count null character ‘0’. Syntax: int strlen(const char *str); Parameter: str: It represents the string variable whose length we have to find. Return: This function returns the length of string passed.

4 0

1 year ago

Find the propagation delay for a signal traversing the in a metropolitan area through 200 km, at the speed of light in cable (2.

Ede4ka [16]

Answer:

t= 8.7*10⁻⁴ sec.

Explanation:

If the signal were able to traverse this distance at an infinite speed, the propagation delay would be zero.

As this is not possible, (the maximum speed of interactions in the universe is equal to the speed of light), there will be a finite propagation delay.

Assuming that the signal propagates at a constant speed, which is equal to 2.3*10⁸ m/s (due to the characteristics of the cable, it is not the same as if it were propagating in vaccum, at 3.0*10⁸ m/s), the time taken to the signal to traverse the 200 km, which is equal to the propagation delay, can be found applying the average velocity definition:

$v = \frac{(xf-xo)}{(t-to)}$

If we choose x₀ = 0 and t₀ =0, and replace v= 2.3*10⁸ m/s, and xf=2*10⁵ m, we can solve for t:

$t =\frac{xf}{v} =\frac{2e5 m}{2.3e8 m/s} =8.7e-4 sec.$

⇒ t = 8.7*10⁻⁴ sec.

4 0

3 years ago