We have,
- Jane mass is 55 kg 
- His body covered with 700 nails all of them having a surface area of 1.00 mm² each = 700 × 1 = 700 mm² = 700/1000000 = 7/10000
We know that,
Let's calculate force as we already have area;
- F = ma
- F = 55 × 9.8 { Acceleration due to gravity }
- F = 539 N
Now, if should she would be on 700 nails then pressure will be;
- P = F/A
- P = 539/7 × 10000
- P = 5390000/7
- P = 770,000 Pascal 
And if should would be on a 1 nail only,
- P = F/A
- P = 539/1 × 1000000
- P = 539000000 Pascal
<u>A</u><u>s</u><u>,</u><u> </u><u>y</u><u>o</u><u>u</u><u> </u><u>c</u><u>a</u><u>n</u><u> </u><u>n</u><u>o</u><u>t</u><u>i</u><u>c</u><u>e</u><u> </u><u>y</u><u>o</u><u>u</u><u>r</u><u>s</u><u>e</u><u>l</u><u>f</u><u> </u><u>t</u><u>h</u><u>a</u><u>t</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>p</u><u>r</u><u>e</u><u>s</u><u>s</u><u>u</u><u>r</u><u>e</u><u> </u><u>w</u><u>i</u><u>l</u><u>l</u><u> </u><u>b</u><u>e</u><u> </u><u>s</u><u>o</u><u> </u><u>h</u><u>i</u><u>g</u><u>h</u><u> </u><u>w</u><u>i</u><u>t</u><u>h</u><u> </u><u>o</u><u>n</u><u>l</u><u>y</u><u> </u><u>1</u><u> </u><u>n</u><u>a</u><u>i</u><u>l</u><u> </u><u>a</u><u>n</u><u>d</u><u> </u><u>b</u><u>e</u><u>c</u><u>a</u><u>u</u><u>s</u><u>e</u><u> </u><u>o</u><u>f</u><u> </u><u>t</u><u>h</u><u>i</u><u>s</u><u>,</u><u> </u><u>n</u><u>a</u><u>i</u><u>l</u><u> </u><u>w</u><u>i</u><u>l</u><u>l</u><u> </u><u>p</u><u>a</u><u>s</u><u>s</u><u> </u><u>through</u><u> </u><u>j</u><u>a</u><u>n</u><u>e</u><u>'</u><u>s</u><u> </u><u>b</u><u>o</u><u>d</u><u>y</u><u>.</u>
 
        
             
        
        
        
When the pendulum and roller coaster move to the top, its has more potential energy whereas when comes to the bottom has more kinetic energy.
<h3>Compare and contrast the energy transfer of a roller coaster to that of a pendulum:</h3><h3>What is the transfer of energy in a roller coaster?</h3>
The transfer of potential energy to kinetic energy occur when the roller coaster move along the track. As the motor pulls the cars to the top, the body has more potential energy whereas when the body comes to the bottom , it has kinetic energy in the object.
<h3>What is the energy transfer in a pendulum?</h3>
As a pendulum swings, its potential energy changes to kinetic energy and kinetic energy changes into potential energy. At the top more potential energy is present.
So we can conclude that When the pendulum and roller coaster move to the top, its has more potential energy whereas when comes to the bottom has more kinetic energy.
Learn more about energy here: brainly.com/question/13881533
#SPJ1
 
        
             
        
        
        
Answer:
This link was diagram 
Explanation:
https://doubtnut.app.link/FnsNC80Dccb
 
        
             
        
        
        
Answer: the effective design stiffness required to limit the bumper maximum deflection during impact to 4 cm is 3906250 N/m
Explanation:
Given that;
mass of vehicle m = 1000 kg
for a low speed test; V = 2.5 m/s
bumper maximum deflection = 4 cm = 0.04 m
First we determine the energy of the vehicle just prior to impact;
W_v = 1/2mv²
we substitute
W_v = 1/2 × 1000 × (2.5)²
W_v = 3125 J
now, the the effective design stiffness k will be:
at the impact point, energy of the vehicle converts to elastic potential energy of the bumper;
hence;
W_v = 1/2kx²
we substitute
3125 = 1/2 × k (0.04)²
3125 = 0.0008k
k = 3125 / 0.0008
k = 3906250 N/m
Therefore, the effective design stiffness required to limit the bumper maximum deflection during impact to 4 cm is 3906250 N/m
 
        
             
        
        
        
Due to attraction ... of opposite charges