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3 years ago

Take another look at line 1. Suppose that you use distance and time between any pair of neighboring dots to calculate speed:

Physics

1 answer:

Nat2105 [25]3 years ago

6 0

Answer:

The time of travel and the distance between neighboring dots is always the same. So, the speed between neighboring dots is constant. This speed will be the same as the average speed in part F.

Explanation:

This is the sample answer provided, do not copy word-for-word, or you will most likely get in trouble for cheating.

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A power plant uses Uranium<br> to produce energy

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Answer:

how is that a question?

Explanation:

yeah i dunno the answer cause thats not a question

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3 years ago

What type of image can a convex mirror produce?

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Convex mirrors only produce virtual images

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3 years ago

Read 2 more answers

Argon gas enters steadily an adiabatic turbine at 900 kPa and 450C with a velocity of 80 m/s and leaves at 150 kPa with a veloc

Crazy boy [7]

Answer:

Temperature at the exit = $267.3 C$

Explanation:

For the steady energy flow through a control volume, the power output is given as

$W_{out}= -m_{f}(h_{2}-h_{1} + \frac{v_{2}^{2}}{2} - \frac{v_{1}^{2}}{2})$

Inlet area of the turbine = $60cm^{2}= 0.006m^{2}$

To find the mass flow rate, we can apply the ideal gas laws to estimate the specific volume, from there we can get the mass flow rate.

Assuming Argon behaves as an Ideal gas, we have the specific volume $v_{1}$

$v_{1}=\frac{RT_{1}}{P_{1}}=\frac{0.2081\times723}{900}=0.1672m^{3}/kg$

$m_{f}=\frac{1}{v_{1}}\times A_{1}V_{1} = \frac{1}{0.1672}\times(0.006)(80)=2.871kg/sec$

for Ideal gasses, the enthalpy change can be calculated using the formula

$h_{2}-h_{1}=C_{p}(T_{2}-T_{1})$

hence we have

$W_{out}= -m_{f}((C_{p}(T_{2}-T_{1}) + \frac{v_{2}^{2}}{2} - \frac{v_{1}^{2}}{2})$

$250= -2.871((0.5203(T_{2}-450) + \frac{150^{2}}{2\times 1000} - \frac{80^{2}}{2\times 1000})$

<em>Note: to convert the Kinetic energy term to kilojoules, it was multiplied by 1000</em>

evaluating the above equation, we have $T_{2}=267.3C$

Hence, the temperature at the exit = $267.3 C$

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2 years ago

Physics {deceleration}

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3 years ago

If you put a penny in each light spot, explain which one will receive the most energy.

SIZIF [17.4K]

If you put a penny in each light spot the penny that the light is shining on will recive the most energy.

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2 years ago