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4 years ago

An oceanic depth-sounding vessel surveys the

Physics

1 answer:

IgorC [24]4 years ago

3 0

So you would divide 1530 by 8 and that’s how you’d get your answer, so it should be (blank)m

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An 84.0 kg sprinter starts a race with an acceleration of 1.76 m/s2. If the sprinter accelerates at that rate for 11 m, and then

gulaghasi [49]

Answer:

t=17.838s

Explanation:

The displacement is divided in two sections, the first is a section with constant acceleration, and the second one with constant velocity. Let's consider the first:

The acceleration is, by definition:

$a=\frac{dv}{dt}=1.76$

So, the velocity can be obtained by integrating this expression:

$v=1.76t$

The velocity is, by definition: $v=\frac{dx}{dt}$ , so

$dx=1.76tdt\\x=1.76\frac{t^{2}}{2}$ .

Do x=11 in order to find the time spent.

$11=1.76\frac{t^2}{2}\\ t^2=\frac{2*11}{76} \\t=\sqrt{12.5}=3.5355s$

At this time the velocity is: $v=1.76t=1.76*3.5355s=6.2225\frac{m}{s}$

This velocity remains constant in the section 2, so for that section the movement equation is:

$x=v*t\\t=\frac{x}{v}$

The left distance is 89 meters, and the velocity is $6.2225\frac{m}{s}$ , so:

$t=\frac{89}{6.2225}=14.303s$

So, the total time is 14.303+3.5355s=17.838s

7 0

3 years ago

In which direction do hurricanes in the southern hemisphere rotate?

charle [14.2K]

They should rotate clockwise

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3 years ago

What happens to the sound waves when the source of the sound is moving toward you

Alexxandr [17]

Answer:

The perceived frequency is higher than the actual emitted sound frequency. that means that the received sound waves are of shorter wavelength.

Explanation:

When the source of a sound wave is moving toward the observer, the perceived frequency of the wave changes in relation to the observer producing a change in pitch. The effect is called Doppler effect in honor of the physicist who formulated the physical explanation.

In the case of the sound source approaching the observer, the perceived frequency is higher than that actually emitted by the sound source.

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4 years ago

What kind of frequency do radio waves have?<br><br>A. High frequency <br><br>B. Low frequency

inn [45]

B low frequency it is the lowest frequency

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3 years ago

What are the advantages of using a telescope compared to making observations with the naked eye?

lara31 [8.8K]

The naked eye is very limited. Unlike the telescope which can see far away.

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4 years ago