Given:
Height of the mercury manometer, h = 23.6 cm
To determine:
The pressure of gas trapped in the closed-tube mercury manometer
Explanation:
In the case of a closed tube mercury manometer, the pressure of the gas is equal to the height difference of the mercury levels in the two arms of the manometer.
i.e. P(gas) = P(h)
in this case, h = 23.6 cm = 236 mm
i.e. Pgas = 236 mmHg
Since, 1 atm = 760 mmHg
The corresponding Pgas(atm) = 236 mmHg * 1 atm/760 mmHg = 0.311 atm
Ans: The pressure of the gas is 0.311 atm
The pressure of the gas in the closed-tube mercury manometer is approximately 0.31 atmospheres, calculated by converting the height of the mercury column into atmospheres.
The pressure of a gas in a closed-tube mercury manometer can be determined using the known height of the mercury and the concept of hydrostatic pressure. Firstly, it's important to note that the pressure on either side of the mercury column in the tube is equal. The pressure of the gas is the same as the hydrostatic pressure due to a column of mercury of the given height in the tube.
In the reference solution provided, the height is given as 26.4 cm. However, according to the question, the height is provided as 23.6 cm. Assuming the height is indeed 23.6 cm, we need to convert this to a pressure value. It is known that 1 atm at sea level is equivalent to a column of mercury that is about 760 mm high.
Therefore, we can convert the height of 23.6 cm or 236 mm into atmospheres. To do this, divide 236 mm by 760 mm to find the pressure in atmospheres. Therefore, the pressure of the gas in the manometer is approximately 0.31 atmospheres.
#SPJ3
Answer:
4.907 × 10^-19 J
Explanation:
The energy of the lasers in a Blu-ray player can be calculated by using;
E = hf
Where;
E = Energy of laser (J)
h = Planck's constant (6.626 × 10^-34 J/s)
f = frequency (Hz)
However, the frequency must be known first in order to calculate the energy. The frequency can be calculated using the formula:
f = v/λ
Where:
λ = wavelength (4.05x10−7 m.)
v = speed of light (3 × 10^8m/s)
f = frequency (Hz)
f = 3 × 10^8 ÷ 4.05 x 10^−7
f = 0.7407 × 10^(8 + 7)
f = 0.7407 × 10^15
f = 7.407 × 10^14 Hz
Using E = hf
E = 6.626 × 10^-34 × 7.407 × 10^14
E = 49.07 × 10^(-34 + 14)
E = 49.07 × 10^-20
E = 4.907 × 10^-19 J
b. False
John Smith
B)
John Winthrop
C)
Thomas Dale
D)
William Bradford
Answer: John winthrop
Explanation:
Answer:
Explanation:
The correct answer is
energy resulting from the flow of charged particles , such as electrons or ions.
hope it helps :)
B. a decrease in greenhouse gases
C. average decrease in the temperatures near Earth's surface
D. a decrease in carbon dioxide emissions
Answer: The correct answer is A. average increase in the temperatures near Earth's surface
Explanation: The reason this is correct is that global warming is it getting hotter, logically the temperatures near Earth's surface will be getting hotter as well. Hope this helps