Answer:
P = 1000000[Pa] = 1000 [kPa]
Explanation:
To solve this problem we must use the definition of pressure, which is equal to the relationship of force over area.
where:
P = pressure [Pa] (units of pascals)
F = force = 100 [N]
A = area = 100 [mm²]
But first we must convert the units from square millimeters to square meters.
![A=100[mm^{2}]*\frac{1^{2} m^{2} }{1000^{2}mm^{2} } =0.0001[m^{2} ]](https://tex.z-dn.net/?f=A%3D100%5Bmm%5E%7B2%7D%5D%2A%5Cfrac%7B1%5E%7B2%7D%20m%5E%7B2%7D%20%7D%7B1000%5E%7B2%7Dmm%5E%7B2%7D%20%20%7D%20%3D0.0001%5Bm%5E%7B2%7D%20%5D)
Now replacing:
![P=100/0.0001\\P=1000000[Pa]](https://tex.z-dn.net/?f=P%3D100%2F0.0001%5C%5CP%3D1000000%5BPa%5D)
Answer: C- the outer core
Explanation: The outer core is a thick layer of molten rock that encircles the inner core.
<u>Answer</u>
9 m
<u>Explanation</u>
The energy stored in a spring is given by:
Energy = 1/2 k²e
Where e is the compression and k is the spring constant.
Energy = 1/2 × 176,400 × 0.2²
= 3,528 N
The same energy will then be converted to potential energy given by:
Energy = mgh
Where m is the mass, g is the gravity and h is the height above the ground.
Energy = mgh
3,528 = 40 × 9.8 × h
3,528 = 392h
h = 9 m
