To solve this problem, we must first assume that the gas
acts like an ideal gas so that we can use the ideal gas equation:
P V = n R T
where P is the pressure, V is the volume, n is the number
of moles, R is the universal gas constant and T is the absolute temperature
Assuming that the number of moles is constant, then we
can write all the variables in the left side:
P V / T = k where
k is a constant (n times R)
Equating two conditions or
two states:
P1 V1 / T1 = P2 V2 / T2
We are given that V2 = 2
V1 therefore
P1 V1 T2 = P2 (2V1) T1
P1 T2 = 2 P2 T1
Additionally we are given
that the temperature in Celsius is doubled, however in the formula we use the
absolute temperature in Kelvin, therefore:
T1 (K) = T1 + 273.15
T2 (K) = 2T1 + 273.15
and P1 = 12 atm
Substituting:
<span>12 (2T1 + 273.15) = 2 P2 (T1 + 273.15)</span>
P2 = 6 (2T1 + 273.15) /
(T1 + 273.15)
Assuming that a nice
spring day in Chicago has a temperature of 15 Celsius, therefore:
P2 = 6 (2*15 + 273.15) / (15
+ 273.15)
<span>P2 = 6.312 atm</span>
<u>ALL of the following work assumes NO AIR RESISTANCE:</u>
1). an object moving under the influence of only gravity, and not in orbit; its horizontal velocity is constant, and its vertical motion is accelerated downward at 9.8 m/s²
2). a parabola
3). Horizontal: velocity is constant, acceleration is zero. . . . Vertical: acceleration is 9.8 m/s² downward, velocity depends on whether it was launched, thrown up, thrown down, dropped, etc.
4). a). the one that was thrown horizontally; b). both hit the ground at the same time; c). both hit the ground with the same vertical velocity
5). a). zero; b). zero; c). gravity ... 9.8 m/s² down; d). 3.06 seconds; e). 4.38 m/s; f). 30 m/s g). no; gravity has no effect on horizontal motion
6). a). 1.8 seconds; b). 13.1 meters; c). 17.6 m/s down; d). 7.3 m/s; gravity has no effect on horizontal motion
7). 45 m/s
8). without air resistance, the ball is traveling horizontally at 13 km/hr, and it lands back in your hand
9). a). 4.49 m/s; b). 29.7 m/s
10). 7.24 meters
11). 700 meters
12). A). 103.7 meters ( ! she's in big trouble ! ); B). 17.5 meters
Answer:
Light passes through the gas
Light passes through the pure water
Light passes through some solids
Explanation:
In gasses, there are many spaces between the molecules. These spaces allow light to pass through them without any interruption.
In pure water, there are some spaces between particles. these particles allow some light rays to pass theough, some to move through the common boundary and reflec5 some of them.
in solids, some allow light to pass through as they are transparent or translucent
Answer:
Ozone layer in the upper atmosphere filters most of the harmful radiations of shorter wavelength. It actually absorbs the hazardous radiations like ultraviolet, gamma rays, x- rays and most of all those having shorter wavelength then the visible light. That's how the earth's atmosphere protects life on earth. But unfortunately, climate change and global warming is causing the depletion of ozone layer which is causing skin related diseases and harming not only the human life but also the plants and animals.
Answer:
because it has no balance
