The diameter of the football player's piston is 0.55 m
Given that the mass of the cheerleader(m) is 55 kg, mass of football player to be hold (M) is 130 kg, height of the players (h) is 1.30 m, radius of the piston corresponding to the diameter (r) is 0.09 m, Diameter of football player's piston (R), P1 is Pressure on the cheerleader's side, P2 is Pressure on the football player's side
Using Pascal's law,
This law states that if there is a change at a point of a body immersed in a fluid then that change will spread thoroughly to each and every point of the body.
The formula of hydraulic system is,
P1= P2
F1/A1 = F2/A2
mg/πr^2 = 4Mg/πR^2
m/r^2=4M/R^2
R^2=4M×r^2/m
By plugging the values, we get.,
R^2=(4×130×0.09^2)/55
R^2=4.21/55=0.076
R=√0.076 = 0.275 m
Hence, diameter of football player's piston is 0.55 m
Learn more about Hydraulic lift here
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Because they are conducting, when you bring them together the charge is split equally among the two spheres (because they have the same radius the amount of charge is also equal). Now they will repel each other because of the net charge on each with the same polarity.
It causes a movement of convection in the water resulting in a pulling current.
Hope this helpss
Answer:
average speed = 18 miles / hour
Explanation:
Given data
drive = 396 miles
time = 8 am Tuesday to 5 pm Wednesday = 33 hours
lunch = 30 min Tuesday + 30 min Wednesday = 60 min = 1 hour
sleep = 7 pm Tuesday to 5 am Wednesday = 10 hours
to find out
average speed
solution
we know that he take total time = 33 hours and he took rest + luch = ( 1 + 10 hours)
so total travel time is = 33 - 11 = 22 hours
so
average speed = distance / time
average speed = 396 / 22
average speed = 18 miles / hour
