Answer:
Explanation:
A closed system can exchange energy but not matter, with its surroundings. An isolated system cannot exchange any heat, work, or matter with the surroundings, while an open system can exchange energy and matter.
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Answer:
The lifetime of the particle is 
Explanation:
From the question we are told that
The average rest energy is 
The intrinsic width is 
The lifetime is mathematically represented as

Where h is the Planck's constant with a value of
substituting values


Take 320 and divide by 8
320/8 = 40 mi/hr or A
G.P.E = mgh
Weight = mg = 200N
So G.P.E = 200 * 2 = 400 Joules