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salantis [7]
4 years ago
11

A PERT chart

Physics
1 answer:
krek1111 [17]4 years ago
6 0

Answer:

A.

Explanation:

A PERT chart is a project management tool that provides a graphical representation of a project's timeline. The Program Evaluation Review Technique (PERT) breaks down the individual tasks of a project for analysis. But PERT charts are considered preferable to Gantt charts because they identify task dependencies, but they're often more difficult to interpret.

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A 2.1 cm length of tungsten filament in a small lightbulb has a resistance of 0.067 ω. find its diameter. the resistivity of the
kkurt [141]
The resistance of an ohmic material is given by 
R= \frac{ \rho l}{a}
where l is the length and a is the cross sectional area.  For a circular wire, this area is that of a circle:
R=  \frac{\rho l}{ {d^2} } \frac{4}{\pi}=\frac{5.6\times10^-8 \times0.021m\times4}{\pi d^2}   = \frac{1.497\times 10^-9}{d^2}
Then solving for diameter, d:
d^2=\frac{1.497\times 10^-9}{0.067}=2.235\times10^-8
d=0.1495mm
3 0
4 years ago
Why sound heard better at night than at day?​
vodomira [7]

Answer:

it is because it is quieter at night than in the daytime. Therefore it is easy to hear the sound far away. However, it is only one of the reasons. Actually, sound transmits farther at night may be related to refraction of sound waves! First, sound is the vibration of air, and it is a kind of wave motion.

Explanation:

6 0
4 years ago
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find the resistance of a multiplier connected with milliammeter of resistance 10 ohms with a deflection of 10 milliamperes and t
Murljashka [212]
The answer is 26 because you add
8 0
2 years ago
A boat crosses a river of width 229 m in which the current has a uniform speed of 0.756 m/s. The pilot maintains a bearing (i.e.
Stolb23 [73]

Answer:

1.85 m/s

102.438 m

Explanation:

From vector motion

The resultant velocity

R=\sqrt{0.756^2+1.69^2}\\\Rightarrow R=1.85\ m/s

The magnitude of speed of the speed of the boat relative to a stationary shore observer is 1.85 m/s

The distance covered is 229 m

Time = Distance / Speed

\text{Time}=\frac{229}{1.69}\\\Rightarrow \text{Time}=135.50\ s

Distance = Speed of current × Time

Distance = 0.756×135.5 = 102.438 m

The boat will be 102.438 m from the initial position is the boat when it reaches the opposite shore

3 0
4 years ago
Acid rain contributes to soil erosion. Acid rain can be caused by A. chemicals released into the air by motor vehicles B. drough
Gala2k [10]
I would say B? Maybe but im not sure
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3 years ago
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