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Otrada [13]
3 years ago
7

Melissa is taking an entrance exam that is testing only knowledge of chemistry. Which of the following exams is she most likely

taking?
SAT
2 answers:
dolphi86 [110]3 years ago
6 0
I think it would be the scholarly aptitude assessment
Nikitich [7]3 years ago
3 0

Answer:

D?

Explanation:

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a helicopter flies parallel to the ground at an altitude of 1/2 kilometer and at a speed of 2 kilometers per minute. if the heli
Murrr4er [49]

The Pythagoras' theorem and the uniform motion allows to find the answer for the rate of change of distance is

               v = 32.3 m / s

The distance is the length of the segment that a white house wing with the helicopter, this can be found using the Pythagoras' theorem

               R = \sqrt{x^2 + y^2}

Where R is the distance, x is the horizontal distance where the helicopter flies and y is the vertical distance that corresponds to the flight height

y = 500 m

Since the helicopter flies at constant speed, we can use the uniform motion relation

              v_h = \frac{x}{t}

              x = v_ht

Where v_h is the speed of the helicopter and t is the time

We substitute  

                r = \sqrt {(V_h \ t)^2 + y^2}

Kinematics defines velocity as the change of position in the unit of time

            v = \frac{dR}{dt}

           v = \frac{1}{2} \  \frac{2 ( v_h t) v_h}{ \sqrt{(v_h t)^2 + y^2} }

           v = \frac{v_h^2 \ t}{ \sqrt{(v_h t)^2 + y^2} }

This expression is the change in distance as a function of time for a given speed. In the exercise, this speed is requested for a time of one minute, for the helicopter speed of

        v = 2km/min (\frac{1000m}{1km} ) ( \frac{1 min}{60s}) = 33.33 m / s

Let's calculate

            v = \frac{33.33^2 \ 60 }{ \sqrt{ )33.3 \ 60)^2 +500^2} }

         

            v = 32.3 m / s

In conclusion using the Pythagoras' theorem and the uniform motion we can find the answer for the rate of change in distance is

               v = 32.3 m / s

Learn more here: brainly.com/question/343682

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3 years ago
Which of the following is not a financial statement?.
kirill115 [55]

Answer:

trial balance is the financial statement

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2 years ago
Which type of microphone interface would plug into a sound card?
Nezavi [6.7K]

Answer: 3.5mm connector

Explanation:

I just took the test

6 0
3 years ago
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If Emma decides to buy a new laptop for school, which of the following is most likely to be her opportunity cost?
never [62]
I can't answer without the choices, please put the choices so I can help you.
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3 years ago
According to the passage, one problem that likely precipitated the 1980s crisis was:investors' reactions to disappointing financ
ira [324]

Answer:

Meow

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Thx for ur time xfbbxdghbbfzfx xydxydhxgxvvc

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