Answer:
P = 52 kPa
Explanation:
Hidrostatic pressure is defined as the product of the height of liquid (h) by its specific weight (ρ) and by the acceleration of gravity (g).
In the first scenario, the atmospheric pressure is:
In the second scenario, h = 4.2 + 1 m. Therefore, the pressure at the bottom of the barrel is:
The pressure on the bottom when water is added to fill the pipe to its top is 52 kPa.
1) First of all, let's find the resistance of the wire by using Ohm's law:
where V is the potential difference applied on the wire, I the current and R the resistance. For the resistor in the problem we have:
2) Now that we have the value of the resistance, we can find the resistivity of the wire
by using the following relationship:
Where A is the cross-sectional area of the wire and L its length.
We already have its length
, while we need to calculate the area A starting from the radius:
And now we can find the resistivity:
Answer:
I think they are both equal in strength but make sure from others
Answer:
Enhanced Green house effect
Explanation:
The paradox describes the inconsistency between the faint young Sun and the temperate climate on the early Earth. Despite low radiation by the sun of the early year, the Earth still maintained a temperate climate.
This paradox can be resolved by instigating changes in the atmospheric concentrations of greenhouse gases like ammonia (NH3), CH4, or CO2. This is referred to as enhanced green house effect.
Answer:
397.5K
Explanation:
Given parameters:
Initial volume = 2.35L
Final temperature = 23°C
Final volume = 1.75L
Unknown:
Initial temperature = ?
Solution:
The Charles's law states that "the volume of a fixed mass(mole) of a gas varies directly as its absolute temperature if the pressure is constant".
Mathematically;
where V₁ is the initial volume
T₁ is the initial temperature
V₂ is the final volume
T₂ is the final temperature
we need to convert °C to Kelvin;
23°C; 273 + 23 = 296K
T₁ = 397.5K