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valkas [14]
2 years ago
11

A piston-cylinder arrangement contains air modeled as an ideal gas with constant specific heat ration of k =1.4. The air undergo

es a power cycle consisting of four processes in series: Process 1 to 2: constant temperature expansion at 600 k from p_1 = 0.5 MPa to p_2 = 0.4 MPa. Process 2 to 3: Polytrophic expansion with n = k to p_3 = 0.3 MPa Process 3 to 4: constant pressure compression to V_4 =V_1 Process 4 to 1: constant volume heating. Sketch the cycle on a p-v diagram. Determine (a) the work and heat transfer of each process in kJ/kg and (b) the thermal efficiency.
Physics
1 answer:
loris [4]2 years ago
4 0

Answer:

Pish posh idk xD im busy but ill help in a second

Explanation:

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If you drop an object from a height of 1.9 m, it will hit the ground in 0.62 s. if you throw a baseball horizontally with an ini
faltersainse [42]
That's the cool thing about free fall.  The amount of time it takes to fall remains the same.

In this case, a ball that is simply dropped from rest will fall at the same rate as a ball that had some umph in the horizontal direction.

6 0
3 years ago
Two children are riding on a merry-go-round that is rotating with a constant angular speed. Abbie is one meter from the center o
klio [65]

Answer:

The acceleration of Abbie is half of the Zak's.

Explanation:

The centripetal acceleration of an object on a circular path is given by :

a=r\omega^2

Two children are riding on a merry-go-round that is rotating with a constant angular speed. Let r_1 is distance of Abbie from the merry-go-round and r_2 is distance of Zak's from the merry-go-round. Acceleration of Abbie is :

a_1=r_1\omega^2 ...... (1)

r_1=1\ m

Acceleration of Zak's is :

a_2=r_2\omega^2 .......(2)

r_2=2\ m

Dividing equation (1) and (2) we get :

\dfrac{a_1}{a_2}=\dfrac{r_1}{r_2}\\\\\dfrac{a_1}{a_2}=\dfrac{1}{2}\\\\a_1=\dfrac{a_2}{2}

So, the acceleration of Abbie is half of the Zak's.

7 0
3 years ago
Which of the following phases changes at point B on the diagram shown below?
kodGreya [7K]

Answer:

C. melting

option C is correct answer.

8 0
3 years ago
Diamond has a high index of refraction at about 2.4, which helps account for its sparkle. How fast does light travel through a d
wariber [46]

Answer:

1.25 \cdot 10^8 m/s

Explanation:

The speed of light through a medium is given by:

v=\frac{c}{n}

where

c = 3 \cdot 10^8 m/s is the speed of light through vacuum

n is the index of refraction of the material

In this case, diamond has a refractive index of n = 2.4, so the speed of light in diamond is

v=\frac{3\cdot 10^8 m/s}{2.4}=1.25\cdot 10^8 m/s

6 0
3 years ago
__________ is a synthetic drug with effects very similar to those of cocaine. A. Ecstasy B. Dramamine C. Hydrocodone D. None of
ehidna [41]
Answer is C. Hydrocodone, also known as dihyrocodeinone, is a semi-synthetic of opioid synthesized from codeine, found in opium poppy. Used to relieve moderate to severe pain.
4 0
3 years ago
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