Explanation:
Balls A and C have the same initial vertical velocity of zero. Therefore, they land at the same time.
Ball B has a positive initial vertical velocity, so it hits the ground last.
Explanation:
Since, the given balloon contains equal volume of dry air at the same temperature and pressure therefore, moles of air filled is equal to the moles of helium gas.
Moles of air is 228363.69 moles and molar mass of air is 28.8 g/mol.
As we know that,
No. of moles of air =
228363.69 mol =
mass = 6576874.341 g
Therefore, mass left is as follows.
6576874.341 g - 913454.77 g (as 913454.77 g = mass of He)
= 5664419.57 g
Thus, we can conclude that mass left is 5664419.57 g.
Answer:
The correct answer is we see a Spring tide just after a full moon or no moon phase i.e. twice each lunar month.
Explanation:
A spring tide is popularly known as the "King Tide". As the name suggest, it has nothing to do with the season of spring. It gets its name from the idea of "springing forth". During a spring tide, the tidal range i.e. the difference between high and low water, is maximum. This happens when sun and the moon are on the same side of the earth (new moon) as well as when sun and moon are on the opposite side of the earth (full moon).