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stira [4]
3 years ago
7

Atomic weight is equal to the number of protons and neutrons in the nucleus. atomic weight is equal to the number of protons and

neutrons in the nucleus.
a. True
b. False
Chemistry
1 answer:
dlinn [17]3 years ago
7 0
Atomic weight is actually calculated by the sum of protons and neutrons of that atom. It is not equal to the number. You must add them for the result
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A 5-gal, cylindrical open container with a bottom area of 120 square inches is filled with glycerin and rests on the floor of an
aleksandrvk [35]

Answer:

a)  68.9 b/ ft²

b)  57.416

Explanation:

Volume of the cylindrical open container V = 5 gal

= (5)(231)

= 11155 in³

different diagrammatic expression has been shown in the attached file below for clear understanding.

Area A = 120 in²

V = hA

    = \frac{1155}{120}

    =  9.625 in

Upward acceleration , a_z= 3ft/s^2

\frac{dp}{dz} = \rho (g + a_z)

dp= -\rho (g + a_z)dz

\int\limits^P}_0 \,dp= -\rho (g + a_z)  \int\limits^0_h \,   dz

P_b = -\rho (g + a_z) h

= (2.4)*(32.2+3) (\frac{9.625}{12})

= 68.9 b/ ft²

b) The flowchart for the resultant force is shown in the  diagram below:

with that:

F_f = P_bA

F_f =\frac{(68.9)(120)}{(144)}

F_f =57.416

Thus,  the resultant force that the container exert on the floor of the elevator during this acceleration = 57.416

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