Answer : The age will be, 14205.59 year
Explanation :
First we have to determine the decay constant (k).
Now we have to determine the number of nuclei.
Number of nuclei =
Number of nuclei =
Now we have to determine the number of nuclei.
Ratio of to =
Now we have to determine the initial activity.
conversion used :
Now we have to determine the current activity.
Now we have to determine its age.
Therefore, the age will be, 14205.59 year
Deriving the answer to this question can get involved. I am giving the formula only and am assuming you are looking for the magnetic field B at the center point of the sphere. If the sphere rotates with angular velocity along, say, z axis, then the formula for B is as follows:
(with mu the magnetic permeability)
Potential energy, is energy due to its position.
Given: Mass m = 40 Kg; Height h = 50 m
Required: Potential energy P.E = ?
Formula: P.E = mgh P.E = (40 Kg)(9.8 m/s²)(50 m)
P.E = 19,600 J
It can't be less than 250 N or the cart wouldn't move at all. That means there is only 1 answer. It's between not enough info or 250 N. The answer is 250 N. If it was any more, there would be acceleration.
HeLLo tHeRe!
Your answer should be public transportation vouchers
Hope this helps. Have a nice day.