Which of the following must be true about an ideal gas that undergoes an isothermal expansion? (there may be more than one correct choice.)
(a) no heat enters the gas.
(b) the pressure of the gas decreases.
(c) the internal energy of the gas does not change.
(d) the gas does positive work.
in this question, we have given,
we will first calculate displacement of jetliner when speed is constant
from second equation of motion we know that,
now calculate displacement s' when it is decelerating
therefore total displacement=s+s'
the agents of metamorphism include heat, pressure (stress), and chemically active fluids. during metamorphism, rocks are often subjected to all three metamorphic agents simultaneously.