Answer:
Explanation:
Given that;
diameter (d) = 10cm/2 = 0.1m/2 = 0.05 m
length (l) = 10 cm = 0.1 m
porosity = 50%
height (h) = 30 cm = 0.3 m
time (t) = 5 s
volume (v) = 60 cm³ = 60 × 10⁻⁶ m³
Q (flow rate) =
Q =
Q =
From constant head method, we use the relation K = to determine the hydraulic conductivity ; we have:
Seepage velocity
where; velocity =
=
=
Answer:
Boron has a larger radius and the protons in carbon exert more pull.
Explanation:
Remember than elements have greater radius as they are closer to the bottom left corner, so boron would have the larger radius here. Carbon has a smaller radius, which makes it easier for the protons in carbon to exert more pull.
Answer:its got to be B.
Explanation:
Ores are mainly rocks containing minerals of metals with impurities which doesn't have to be non metals or contains lead (Pb) and also ores are not uniform on the earth crust as we have it different in all parts of the earth
Answer : Option 3) Tin and Silver.
Explanation : The elements which will be malleable (thin sheets) and good conductors of electricity has to be a metal.
i) Iodine and Silver - Iodine is a non-metal and is crystalline in nature so, it cannot be malleable. Although silver is a malleable element and is a good conductor of electricity, but the combination cannot be right. Also iodine is bad conductor of electricity.
ii) Iodine and xenon - Iodine is non malleable and bad conductor of electricity, whereas xenon is a noble gas which cannot be malleable but is a good conductor of electricity.
iii) Tin and Silver- Both are metals in nature and possess the property of being malleable and good conductors of electricity.
iv) Tin and xenon - Tin is although malleable and good conductor of electricity xenon is a gas which is good conductor of electricity but cannot be malleable.
Your answer would be D, single replacement