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oee [108]
4 years ago
5

Electrical work on a project cannot start until all of the electrical supplies have arrived on site. The relationship between th

e acquisition of all supplies and the electrical work is:a) Finish-Start b) Start-Finish c) Finish-Finish d) Start-Start
Physics
1 answer:
BARSIC [14]4 years ago
7 0

Answer:

A

Explanation:

Finish-Start

Finish to Start is a Logical Relationship in which a Successor Activity cannot start until a Predecessor Activity has finished. What it really means in simple terms we can say that, the Start of a Successor Activity is Dependent on Finish of the Predecessor Activity.

The acquisition of all supplies which is the predecessor activity must finish before the electicalmwork can start which is the successor activity.

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The force that accelerates a rocket in outer space is exerted on the rocket by the?
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3 0
2 years ago
Until he was in his seventies, Henri LaMothe excited audiences by belly-flopping from a height of 9 m into 32 cm. of water. Assu
baherus [9]

Answer:

823.46 kgm/s

Explanation:

At 9 m above the water before he jumps, Henri LaMothe has a potential energy change, mgh which equals his kinetic energy 1/2mv² just as he reaches the surface of the water.

So, mgh = 1/2mv²

From here, his velocity just as he reaches the surface of the water is

v = √2gh

h = 9 m and g = 9.8 m/s²

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v = √176.4 m/s

v₁ = 13.28 m/s

So his velocity just as he reaches the surface of the water is 13.28 m/s.

Now he dives into 32 cm = 0.32 m of water and stops so his final velocity v₂ = 0.

So, if we take the upward direction as positive, his initial momentum at the surface of the water is p₁ = -mv₁. His final momentum is p₂ = mv₂.

His momentum change or impulse, J = p₂ - p₁ = mv₂ - (-mv₁) = mv₂ + mv₁. Since m = Henri LaMothe's mass = 62 kg,

J = (62 × 0 + 62 × 13.28) kgm/s = 0 +  823.46 kgm/s = 823.46 kgm/s

So the magnitude of the impulse J of the water on him is 823.46 kgm/s

6 0
3 years ago
An experimental analysis of the natural oscillations in a particular structure shows the dominant frequencies of interest appear
Irina18 [472]

Answer:

In order to prevent the aliased frequency from we need to sample at  with a sampling frequency that is minimum 2 times the highest frequency where information exit i.e 2 × 750 = 1500 Hz

Explanation:

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