Athin uniform wire is bent into a rectangle. the short, vertical sides are of length a, and the long, horizontal sides are of length b.

if the total mass is 41.00 grams, a = 45.00 cm and b = 70.00 cm, what is the moment of rotational inertia about an axis through one of the vertical wires?

Explanation:

The rectangle is composed by 4 pieces:

2*ma + 2*mb = 0.041 Kg   Since the wire is uniform, we can calculate each partial mass ma and mb:

The total inertia is given by:

 where

The inertia is therefore:

i think they are all correct

explanation:

they seem good

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation