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NARA [144]
3 years ago
7

A cruise ship with a mass of 1.03 ✕ 107 kg strikes a pier at a speed of 0.652 m/s. It comes to rest after traveling 4.44 m, dama

ging the ship, the pier, and the tugboat captain's finances. Calculate the average force (in N) exerted on the pier using the concept of impulse. (Hint: First calculate the time it took to bring the ship to rest, assuming a constant force. Indicate the direction with the sign of your answer.)
Physics
1 answer:
Gnoma [55]3 years ago
5 0

Answer:

The average force exerted on the pier is 4.9 \times 10^{5} N

Explanation:

Given :

Mass of ship m = 1.03 \times 10^{7} Kg

Distance x = 4.44 m

Velocity v = 0.652 \frac{m}{s}

Now find the average velocity,

 v _{avg} = \frac{0+0.652}{2}

 v _{avg} = 0.326 \frac{m}{s}

Now find the time taken by ship to travel 4.44 m.

   t = \frac{x}{v_{avg} }

   t = \frac{4.44}{0.326}

   t = 13.62 sec

Now calculating average force,

  F = \frac{m \Delta v}{\Delta t}

Where \Delta v = 0.652 -0 = 0.652 \frac{m}{s}

  F = \frac{1.03 \times 10^{7} \times 0.652 }{13.62}

  F = 4.9 \times 10^{5} N

Therefore, the average force exerted on the pier is 4.9 \times 10^{5} N

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Neko [114]

Answer:

<h3>The answer is 0.54 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question we have

density =  \frac{10.5}{19.3}  \\  = 0.54404145...

We have the final answer as

<h3>0.54 g/cm³</h3>

Hope this helps you

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Dafna11 [192]

Answer: D. Infrared

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2 years ago
What is the likely identity of a metal if a sample has a mass of 63.5 g when measured in air and an apparent mass of 60.2 g when
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Answer:

Gold

Explanation:

Given:

Mass of sample = 63.5 g

Mass of water = 60.2 g

Find:

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Computation:

Mass of water displaced = 63.5 g - 60.2 g

Mass of water displaced = 3.3 g

So, volume in water = 3.3 cm³

Density = Mass / Volume

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7 0
2 years ago
Find the speed of a long distance runner who runs 30km in 6 hours
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30mi/6hrs is a speed of 5 mph, which converts to a pace of 12 min/mi.

7 0
3 years ago
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Because the pressure falls, water boils at a lower temperature with increasing altitude. Consequently, cake mixes and boiled egg
AlexFokin [52]

Answer:

1) The boiling point of water reduces by 3.28°C at 1,000 m above sea-level

2) The boiling point of water reduces by 6.56°C at 2,000 m above sea-level

Explanation:

The variation of the boiling point of water with elevation is given as follows

The boiling point reduces by 0.5°C for every 152.4 meter increase in elevation

At sea-level, the boiling point temperature of water = 100°C

1) At 1,000 m elevation, the boiling point temperature, T = 100 - (1,000/152.4) × 0.5 ≈ 96.72 °C

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2) At 2,000 m elevation, the boiling point temperature, T = 100 - (2,000/152.4) × 0.5 ≈ 93.44°C

The boiling point of water reduces by 100° - 93.44° = 6.56°C at 2,000 m above sea-level

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3 years ago
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