P = absolute pressure in gas container connected to open-end U-tube = 116 kPa = 116000 Pa
we know that, 1 atm = 101325 Pa and 1 atm = 760 mm of Hg , hence
P = 116000 Pa (1 atm/101325 Pa) (760 mm of Hg/1 atm)
P = (116000 x 760/101325) mm of Hg
P = 870.07 mm of Hg
P₀ = atmospheric pressure = 752 mm Hg
Level of mercury is given as
P' = P - P₀
inserting the values
P' = 870.07 - 752
P' = 118 mm
so correct choice is
d. be 118 mm higher in the arm open to the atmosphere.
The level of mercury in the tube would be 118 mm higher in the arm connected to the gas cylinder, as determined by converting kPa to mm Hg and calculating the pressure difference between the gas pressure and atmospheric pressure.
In order to solve this problem, we need to convert all units to the metric units system for consistency. First, let's convert the pressure of the atmosphere from mm Hg to kilopascals (kPa), knowing that one atmosphere which equals 760 mm Hg is approximately 101.3 kPa.
So, the atmospheric pressure is (752 mm Hg / 760 mm Hg) * 101.3 kPa ≈ 100.4 kPa.
The difference between the gas pressure and the atmospheric pressure gives the pressure of the mercury in the tube, since pressures are additive. So, the pressure difference is 116 kPa - 100.4 kPa = 15.6 kPa.
Finally, we convert this pressure in kPa back to mm Hg to get the height difference. By doing the inverse conversion, we get 15.6 kPa * (760 mm Hg / 101.3 kPa) ≈ 118 mm Hg. Therefore, the level of mercury in the tube will be 118 mm higher in the arm connected to the gas cylinder, corresponding to the option
c. be 118 mm higher in the arm connected to the gas cylinder.
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It is not possible for a heat engine to be 100% efficient. The Laws of Thermodynamics explicitly explains that you can never transfer heat perfectly simply because during the flow of heat (either at low or high temperature) some of the initial input heat have been transformed into work.
b. 0.15.
c. 2.5.
d. 1.3.
Answer:1.3
Explanation:
Took the test on Penn foster
The answer is 107 degrees. The geometric shape for ammonia is Trigonal Pyramidal, even though its electron geometry is “Tetrahedral”. This is because ammonia has a lone pair of electrons that occupy its space like the other 3 hydrogens in the geometric structure.
The answer 180 degrees. This is because of the linear geometric structure of carbon dioxide. The oxygen atom is on either side of the carbon atom, each is bound by a double covalent bond. All the atoms are involved in the bond and there are no one pair electrons.
The answer is tetrahedral geometry. This is because all the 4 valence electrons of the carbon are involved in a bond with a hydrogen atom. The angles in a tetrahedral geometric arrangement, such as in methane, is 109.5 degrees, where the hydrogen atoms are as far apart, from each other, as possible .
2. Explain Distance
3. Differentiate between distance and position.
Note : All these questions are under Physics.
Answer:
1-Simple harmonic motion, in physics, repetitive movement back and forth through an equilibrium, or central, position, so that the maximum displacement on one side of this position is equal to the maximum displacement on the other side. The time interval of each complete vibration is the same
2-Distance is a numerical measurement of how far apart objects or points are. In physics or everyday usage, distance may refer to a physical length or an estimation based on other criteria (e.g. "two counties over"). The distance from a point A to a point B is sometimes denoted as
3-Position is the location of the object (whether it's a person, a ball, or a particle) at a given moment in time. Displacement is the difference in the object's position from one time to another. Distance is the total amount the object has traveled in a certain period of time.
Explanation:
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Answer
Chemical energy in to thermal energy
Explanation
When acetylene fuel is burning in presence of oxygen, we have chemical process taking place. The torch is used to heat metal to its kindling temperature in oxy-fuel cutting. The steam of gas is then trained on the metal burning it into a metal oxide that flows out of the spout.
So the energy transformation represents this process is Chemical energy into thermal energy