Answer:
Pressure will be 
Explanation:
We have given mass of the women m = 65 kg
Radius of the heels r = 0.578 cm = 0.00578 m
We have to find the pressure
We know that pressure is given by
So force F = mg = 65×9.8 = 637 N
Area 
So pressure 
Answer:
v = 2 v₀
Explanation:
For this exercise we will use the relationship between work and the change in kinetic energy
W = ΔK
Where the work is of the friction force, which is always opposed to the movement whereby the angle is 180º
W = - fr x
The distance for the first case is
x = 1/4 L
We substitute
-fr ¼ L = ½ m v₀²
fr L = 2 m v₀²
In the second case, the new speed takes the ball the entire distance
x = d
-fr L = ½ m v²
We equal the two equations
2 m v₀² = ½ m v²
v² = 4 v₀²
v = 2 v₀
Answer:
(D)
Explanation:
A(2,3,4,6,8)
B(6,9,12,15,18)
(AuB)=(2,3,4,6,8,9,12,15,18)
Physical change :) Hope you get it right! :D Good luck! let me know what else I can help you with. Have a great day! :D
