The pressure of a gas at constant temperature is increased by a factor od 4. by what factor does the volume change?
a 1/4
b 1/2
c 1
d 4

A

Explanation:

The formula used is

PV = P1 * V1

P = x

P1 = 4x

V1 = 1

V2 = ?

x * 1 = 4x * V2          Divide both sides by x

x/x = 4x /x * V2

1 = 4*V2                   Divide by 4

1/4 = 4*V2/4

1/4 = V2

The answer is A

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa