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torisob [31]
3 years ago
9

Which set of ordered pairs represents a function?

Physics
2 answers:
Korolek [52]3 years ago
6 0

Answer:

{(-6, -9), (-6,4),(-1,9), (5, -1)}

Explanation:

because the x value is not repeated twice as it is in {(-8, -2), (7, -2),(-9,2), (0,0)    {(5,8), (9,7),(-3,-8),(5,-5)}    {(7,-8), (7, - 7), (8,4),(1, -3)}​

olchik [2.2K]3 years ago
3 0

Answer:

The second one is a function. {(-8, -2), (7, -2),(-9,2), (0,0)

Explanation:

Its because the y-value is repeated twice.

Hope it helps.

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Answer:

T2 ∝ a3

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What are the similarities and differences between light and sound waves?
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3 0
3 years ago
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6 0
2 years ago
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Six moles of an ideal gas are in a cylinder fitted at one end with a movable piston. The initial temperature of the gas is 28.0
mel-nik [20]

Answer:

63.5 °C

Explanation:

The expression for the calculation of work done is shown below as:

w=P\times \Delta V

Where, P is the pressure

\Delta V is the change in volume

Also,

Considering the ideal gas equation as:-

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 8.314 J/ K mol

So,

V=\frac{nRT}{P}

Also, for change in volume at constant pressure, the above equation can be written as;-

\Delta V=\frac{nR\times \Delta T}{P}

So, putting in the expression of the work done, we get that:-

w=P\times \frac{nR\times \Delta T}{P}=nR\times \Delta T

Given, initial temperature = 28.0 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T₁ = (28.0 + 273.15) K = 301.15 K

W=1770 J

n = 6 moles

So,

1770\ J=6 moles\times 8.314\ J/ Kmol \times (T_2-301.15\ K)

Thus,

T_2=301.15\ K+\frac{1770}{6\times 8.314}\ K

T_2=336.63\ K

The temperature in Celsius = 336.63-273.15 °C = 63.5 °C

<u>The final temperature is:- 63.5 °C</u>

7 0
3 years ago
when a book falls from a shelf to the ground without anyone pushing on it, no work is done to the book. True or False
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That's false.

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(weight) x (length of the fall)

-- Gravity DOES the work.

8 0
3 years ago
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