Answer: a) 557.3kN b) 543kN
Explanation:
Buoyant force = weight of water displaced.
Formula for buoyant force = mg×(density of fluid/density of object)
Density of fluid = density of sea water = 1025kg/m³
Mass of the chamber(m) = 54300kg
g = acceleration due to gravity = 10m/s²
Density of chamber = mass/volume
Where volume of sphere = 4/3Πr³
radius = 4.70/2 = 2.35m
Volume = 4/3×Π(2.35)³
Volume = 54.37m³
Density of chamber = 54300/54.37
= 998.7kg/m³
Substituting the values into the formula for buoyant force
Buoyant force= 54300×10×{1025/998.7}
= 557299N
= 557.3kN
b) Tension in the cable = mass of cable × acceleration due to gravity
= 54300×10 = 543000N or 543kN.
According to the law of gravitational force:
the force between any two objects is directly proportional to the masses of the objects and inversely proportional to the square of the distance between these two objects.
Based on this:
if a 9 c charge is replaced with a 4 c charge while the distance between the charges is kept constant:
18/9 = F/4
2 = F/4
F = 2 x 4 = 8
Answer:
Explanation:
As we know that resistance of one copper wire is given as
here we know that
now we have
now we know that such 17 resistors are connected in parallel so we have
Now if a single copper wire has same resistance then its diameter is D and it is given as
now from above two equations we have
now we have
By looking at how wiggily the bar is lol
1, 2 & 4 are going to be the the correct answer for the question
