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3 years ago

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1 answer:

Zinaida [17]3 years ago

4 0

I think it’s sleepy, but I’m not for sure

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Responsibilities of a class are derived from ________________.

mihalych1998 [28]

Answer:

The correct option is a behavioural models of the the to-be system.

Explanation:

As the Use case analysis method generates the analysis classes list such that the classes are capable of performing the behavior needed to make the system function successfully. From these analysis classes list the responsibilities of each class are defined.

As the list is derived from the behavioural models of the system, thus option a is the correct option.

7 0

3 years ago

A chlorine atom reacts with a sodium atom to form sodium chloride, NaCl A chlorine atom can also react with another chlonne

sammy [17]

Answer:hydrogen peroxide

Explanation:

7 0

4 years ago

8. Look at the picture. Answer in m/s2. *

bija089 [108]

Answer:

???????,???????????????????????????????

6 0

3 years ago

If a woman needs an amplification of 1.0 ✕ 105 times the threshold intensity to enable her to hear at all frequencies, what is h

Damm [24]

Answer:

50 dB.

Explanation:

given,

Amplification needed by the woman,I= 1 x 10⁵ I₀

where as I₀ is the threshold frequency

overall hearing loss of the woman= ?

Using the equation of sound intensity level

$\beta(dB) = 10 log(\dfrac{I}{I_0})$

$\beta(dB) = 10 log(\dfrac{1\times 10^5\ I_0}{I_0})$

$\beta(dB) = 10 log(1\times 10^5)$

$\beta(dB) = 50\ dB$

The overall hearing loss of woman is equal to 50 dB.

7 0

4 years ago

A coin is dropped from a height and reaches the ground in 2 seconds. Neglecting air resistance, from what height (in meters) was

Kamila [148]

Answer:

Coin is dropped from a height of 19.62 m

Explanation:

We have given time t = 2 sec

As coin is drop means its initial velocity u = 0 m/sec

We have to find the height from which coin is dropped

From second equation of motion we know that

$h=ut+\frac{1}{2}gt^2$

So height $h=0\times2+\frac{1}{2}\times 9.81\times 2^2=19.62m$

So coin is dropped from a height of 19.62 m

3 0

3 years ago