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3 years ago

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11. When selecting a route for a long trip, you should

2 answers:

mamaluj [8]3 years ago

6 0

Answer:

b

Explanation:

i think do kill me if im wrong

prohojiy [21]3 years ago

5 0

Answer:

Option C: Evaluate the route for road closures

Explanation:

One of the main concern of planning a long trip is to check if there is any road closure along the journey. This is because a road closure can seriously affect route taken to reach a destination. Without proper planning and evaluation, we might risk ourselves to take a route that meet a road closure that hinder us to reach our destination. This may cause heavy loss of the time and money especially in a long trip.

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The gas expanding in the combustion space of a reciprocating engine has an initial pressure of 5 MPa and an initial temperature

Anit [1.1K]

Answer:

a). Work transfer = 527.2 kJ

b). Heat Transfer = 197.7 kJ

Explanation:

Given:

$P_{1}$ = 5 Mpa

$T_{1}$ = 1623°C

= 1896 K

$V_{1}$ = 0.05 $m^{3}$

Also given $\frac{V_{2}}{V_{1}} = 20$

Therefore, $V_{2}$ = 1 $m^{3}$

R = 0.27 kJ / kg-K

$C_{V}$ = 0.8 kJ / kg-K

Also given : $P_{1}V_{1}^{1.25}=C$

Therefore, $P_{1}V_{1}^{1.25}$ = $P_{2}V_{2}^{1.25}$

$5\times 0.05^{1.25}=P_{2}\times 1^{1.25}$

$P_{2}$ = 0.1182 MPa

a). Work transfer, δW = $\frac{P_{1}V_{1}-P_{2}V_{2}}{n-1}$

$\left [\frac{5\times 0.05-0.1182\times 1}{1.25-1} \right ]\times 10^{6}$

= 527200 J

= 527.200 kJ

b). From 1st law of thermodynamics,

Heat transfer, δQ = ΔU+δW

= $\frac{mR(T_{2}-T_{1})}{\gamma -1}+ \frac{P_{1}V_{1}-P_{2}V_{2}}{n-1}$

= $\left [ \frac{\gamma -n}{\gamma -1} \right ]\times \delta W$

= $\left [ \frac{1.4 -1.25}{1.4 -1} \right ]\times 527.200$

= 197.7 kJ

6 0

3 years ago

Water flows half-full through a 50-cm-diameter steel channel at an average velocity of 4.3 m/s. Determine the volume flow rate a

Citrus2011 [14]

Um, I do not know what to say ?

3 0

3 years ago

To be able to solve problems involving force, moment, velocity, and time by applying the principle of impulse and momentum to ri

coldgirl [10]

Answer:

see explaination

Explanation:

Please kindly check attachment for the step by step solution of the given problem.

The attached files has the solved problem.

3 0

3 years ago

Read 2 more answers

A water tank filled with solar-heated water at 40°C is to be used for showers in a field using gravity-driven flow.

Alenkasestr [34]

Answer:

yes sir

Explanation:

4 0

3 years ago

since your car had a cylinder volume of 275cm what is its engine displacement if the engine had 4 cylinders

RUDIKE [14]

Answer:

$$\begin{align*}

P(Y−X=m|Y>X)=∑kP(Y−X=m,X=k|Y>X)=∑kP(Y−X=m|X=k,Y>X)P(X=k|Y>X)=∑kP(Y−k=m|Y>k)P(X=k|Y>X).

Explanation:

P(Y−X=m|Y>X)=∑kP(Y−X=m,X=k|Y>X)=∑kP(Y−X=m|X=k,Y>X)P(X=k|Y>X)=∑kP(Y−k=m|Y>k)P(X=k|Y>X).

5 0

3 years ago