True or False: There is the same amount of water on earth today as there was when earth was formed.
1 answer:
You might be interested in
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:
Acceleration is given by:
where
v is the final velocity
u is the initial velocity
t is the time interval
Let's apply the formula to the different parts of the problem:
A)
Let's convert the quantities into SI units first:
t = 4.0 min = 240 s
So the acceleration is
B)
As before, let's convert the quantities into SI units first:
t = 94 s
So the acceleration is
C)
For this part we have to use a different formula:
where we have
v = 0 is the final velocity
u = 89.2 m/s is the initial velocity
a is the acceleration
d = 75 m is the distance covered
Solving for a, we find