Physics, 07.10.2019 13:20 evazquez

Which condition will cause the pressure exerted by a gas in a closed container to increase?
a. an increase in volume
b. an increase in temperature
c. a decrease in molecular movement
d. a decrease in the number of gas molecules

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Pressure is force / area. The pressure of a gas in a container can be considered to be the force exerted on the area of the container by gas molecules. If the temperature is increased the gas molecules have more energy so collide with the walls more often and with more force causing pressure to increase.

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when heated, the valance electrons increased their speed and transferred the heat from electron to electron. i just took the test.

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force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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Which condition will cause the pressure exerted by a gas in a closed container to increase?
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