What is the internal energy of 7.00 mol of n2 gas at 40c? a) 18,200j b) 5820j c) 45,500j d) 11,600j

To find the internal energy of gas we can use

here given that

Number of moles (n) = 7 moles

Temperature T = 40 + 273 = 313 K

degree of freedom(f) = 5 (for diatomic gas)

now by above formula

So it is approximately 45500 J (option C)

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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