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FrozenT [24]
2 years ago
7

The barometer of a mountain hiker reads 750 mbars at the beginning of a hiking trip and 650 mbars at the end. Neglecting the eff

ect of altitude on local gravitational acceleration, determine the vertical distance climbed. Assume an average air density of 1.35 kg/m3.
Engineering
1 answer:
natali 33 [55]2 years ago
5 0

Answer:

755.1 m

Explanation:

Initial pressure = 750 mbar

Final pressure = 650 mbar

Converting to Pascal

1 mbar = 100 Pa

Initial pressure = 750 mbar = 75000 Pa

Final pressure = 650 mbar = 65000 Pa

ΔP = Pressure difference = 75000-65000 = 10000 Pa

g = Acceleration due to gravity = 9.81 m/s²

Δh = Height difference

ρ = Density of air = 1.35 kg/m³

ΔP = ρgΔh

\Delta h=\frac{\Delta P}{\rho g}\\\Rightarrow \Delta h=\frac{10000}{1.35\times 9.81}\\\Rightarrow \Delta h=755.1\ m

∴ Vertical distance climbed is 755.1 m

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Two resistors of values 7.0 and 15.0 Ω are connected in parallel. This combination in turn is hooked in series with a 3.8- Ω res
Alex

Answer:

1.8A

Explanation:

Firstly, we need to find the effective resistance in the circuit.

For the two parallel resistors, the effective resistance is;

1/R = 1/7 + 1/15

R = 8.57Ω

Now let's connect it in series with the series resistor

R = 8.57 + 3.8 = 12.37Ω

This is the total effective resistance

The total current is therefore

22.3/8.57 = 1.8A

This is also the current flowing through the 3.8 resistor since it is connected in series

7 0
2 years ago
While at a concert you notice five people in the crowd headed in the same direction. Your tendency to group them is due to? *
Vlada [557]

Answer:

common fate

Explanation:

The gestalt effect may be defined as the ability of our brain to generate the whole forms from the groupings of lines, points, curves and shapes. Gestalt theory lays emphasis on the fact that whole of anything is much greater than the parts.

Some of the principles of Gestalt theory are proximity, similarity, closure, symmetry & order, figure or ground and common fate.

Common fate : According to this principle, people will tend to group things together which are pointed towards or moving in a same direction. It is the perception of the people that objects moving together belongs together.

7 0
2 years ago
The following passage contains a fragment. Select the correct revision. Presley took the exuberance of gospel and added the freq
Semmy [17]

Answer:

A

Explanation:

Option A was the only option that did not have a sentence fragment. All the other choices were fragments because they interrupted the flow of the sentence. A sentence fragment means that if you started reading where the period is, you would understand everything about the sentence and it would be clear. You cannot have an incomplete sentence that does not have background information. An example would be: And that is how you install it. This leaves information unanswered, such as what the subject of the sentence is, or in other words, what you were installing. Another indicator that this was a sentence fragment was that the sentence began with the word "And." Sentence fragments very commonly start with the word and, because that word shows that it is a continuation of a topic.

7 0
2 years ago
a. (24 points) Describe the microstructure present in a 10110 steel after each step in each of the following heat treatments (no
Mrac [35]

Answer:

Explanation:

Please check the below file for the attached file

6 0
2 years ago
Write multiple if statements: If carYear is before 1967, print "Probably has few safety features." (without quotes). If after 19
Free_Kalibri [48]

Answer:

The solution code is written in Python 3.

  1. carYear = 1995
  2. if(carYear < 1967):
  3.    print("Probably has few safety features.\n")
  4. if(carYear > 1970):
  5.    print("Probably has head rests. \n")
  6. if(carYear > 1991):
  7.    print("Probably has electronic stability control.\n")
  8. if(carYear > 2002):
  9.    print("Probably has airbags. \n")

Explanation:

Firstly, create a variable, <em>carYear</em> to hold the value of year of the car make. (Line 1)

Next, create multiple if statements as required by the question (Line 3-13). The operator "<" denotes "smaller" and therefore <em>carYear < 1967</em> means any year before 1967. On another hand, the operator ">" denotes "bigger" and therefore <em>carYear > 1970 </em>means any year after 1970.

The print statement in each of the if statements is done using the Python built-in function <em>print()</em>. The "\n" is an escape sequence that create a new line at the end of each printed phrase.

5 0
2 years ago
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