Answer:
well for one it can be from drilling or when water starts to breck down the rocks
Explanation:
Nothing is accelerating ... it's not even moving. Everything is just sitting there.
That right there tells you that the forces are balanced wherever two things meet,
otherwise something would be accelerating.
At each level where two things meet, there are 2 forces:
-- The gravitational force ... the weight of everything above that place,
and
-- The upward force, exerted by everything below that place.
Here is the stack:
_____________
| Physics ... 2kg | weight = M G = 2 x 9.8 = 19.6 newtons
---------------------
|Calculus ..5 kg | weight = M G = 5 x 9.8 = 49 newtons
---------------------
|Econ . . . .3 Kg | weight = M G = 3 x 9.8 = 29.4 newtons
==================
-------- (Table) ----------
/ \
a). Surface where the table meets the Economics book.
Weight of everything above = (29.4 + 49 + 19.6) = 98 newtons
Upward force exerted on the Econ book by the table = 98 newtons.
b). Surface where the Econ book meets the Calculus book.
Weight of everything above = (49 + 19.6) = 68.6 newtons.
Upward force exerted on the Calc book by the Econ book = 68.6 newtons.
c). Surface where the Calculus book meets the Physics book.
Weight of everything above = 19.6 newtons.
Force exerted on the Physics book by the Calc book = 19.6 newtons.
Answer:
400 milli-rems
Solution:
As per the question;
Maximum energy of particle, 
Weight, w = 1 kg
Energy absorbed, E = 
Now,
Equivalent dose is given by:
1 Gy = 1 J/kg
Also,
1 Gy = 
Therefore,
Dose equivalent in milli-rems is given by:
The volume of Object-A is
(9 g) / (10 g/cm³) = 0.9 cm³
We have no way to find the volume of Object-B from its mass,
because we don't know its density. So we can't compare their
volumes.
20 because if you go to 45 then scroll up it is at 20 degrees celcius
