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never [62]
3 years ago
15

Cliff divers at Acapulco jump into the sea macias (fjm793) – Homework 3, 2d motion 19-20 – dowd – (WoffordWPHY11920 2) 4 from a

cliff 36.2 m high. At the level of the sea, a rock sticks out a horizontal distance of 11.98 m. The acceleration of gravity is 9.8 m/s 2 . With what minimum horizontal velocity must the cliff divers leave the top of the cliff if they are to miss the rock? Answer in units of m/s.
Physics
1 answer:
Stells [14]3 years ago
7 0

Answer:

v = 7.67 m/s

Explanation:

Given data:

horizontal distance 11.98 m

Acceleration due to gravity 9.8 m/s^2

Assuming initial velocity is zero

we know that

h = \frac{gt^2}{2}

solving for t

we have

t = \sqrt{\frac{2h}{g}}

substituing all value for time t

t = \sqrt{\frac{2\times 11.98}{9.8}}

t = 1.56 s

we know that speed is given as

v = \frac{d}{t}

v =\frac{11.98}{1.56}

v = 7.67 m/s

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kiruha [24]

Answer:

The time is 0.5 sec.

Explanation:

Given that,

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Using formula of inductor

V=L\dfrac{\Delta A}{\Delta t}

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Where, \Delta A = change in current

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Put the value into the formula

\Delta t=\dfrac{1.20\times5.00}{12.00}

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5 0
3 years ago
When a fixed amount of ideal gas goes through an isobaric expansion A) its internal (thermal) energy does not change.B) the gas
Bingel [31]
<h2>Answer: its temperature must increase.</h2>

Explanation:

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Now, according to the First law of Thermodynamics that establishes the conservation of energy:

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Now, for an isobaric process:

\Delta W=P\Delta V    (2)

Where:

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<u />

<u>Here we have two possible results:</u>

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-If the gas compresses (negative \Delta V), the work is negative.

In this case we are talking about the first result (work is positive).

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3 years ago
A force of 20 N is executed to raise a rock weighing 30 N. What is the actual mechanical advantage?
xxMikexx [17]
I am absolutely sure its 1.5
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Hope this helps!

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