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laiz [17]
2 years ago
9

A boat travels at 17mi/h for 1.50h. How far does the boat travel?

Physics
1 answer:
SashulF [63]2 years ago
7 0

Answer:

\huge\boxed{25.5mi}

Explanation:

Simply multiply the rate by the time

17 * 1.5 = 25.5 mi

Hope it helps :) and let me know if you want me to elaborate.

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A ball is thrown vertically upward, which is the positive direction. A little later, it returns to its point of release. The bal
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Answer:

The initial velocity of the ball is <u>39.2 m/s in the upward direction.</u>

Explanation:

Given:

Upward direction is positive. So, downward direction is negative.

Tota time the ball remains in air (t) = 8.0 s

Net displacement of the ball (S) = Final position - Initial position = 0 m

Acceleration of the ball is due to gravity. So, a=g=-9.8\ m/s^2(Acting down)

Now, let the initial velocity be 'u' m/s.

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Plug in the given values and solve for 'u'. This gives,

0=8u-0.5\times 9.8\times 8^2\\\\8u=4.9\times 64\\\\u=\frac{4.9\times 64}{8}\\\\u=4.9\times 8=39.2\ m/s

Therefore, the initial velocity of the ball is 39.2 m/s in the upward direction.

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WILL GIVE BRAINLIEST AND 5 STARS.
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The right answer is b) copper
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Please I need help with this question (see image).<br>Show workings if necessary​
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<h2><u>Question</u> :</h2>

When an athlete perspires after running

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  2. Convection cools the body.
  3. The body absorbs cold from the surrounding air.
  4. Heat is conducted away from the body.

<h2><u>Answer</u> :</h2>

When an athlete perspires after running evaporation occurs and helps to cool the body.

Correct option is A.

<h2><u>Explanation</u> :</h2>

When an athlete perspires after running then sweat evaporates and we know that evaporation causes cooling as evaporation requires heat energy. The required heat energy is taken away by the molecules of sweat when they convert from liquid into gas, and this causes cooling on the surface of body. That's why it helps to cool the body.

5 0
2 years ago
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