Answer:
No it's different for different objects because they made of different materials
No, water is the thing that gets pollutant, then again due to all the pollution in water it can cause to hurt others with the pollution
C. zinc is best used for making screws. Zinc is best used for making alloys, anything made from 55% or 95% copper more then likely contain zinc
Particles are objects in motion, so they have kinetic energy. The faster a particle moves, the more kinetic energy it has. Kinetic energy is related to heat. I hope this helps!
For this problem, we use the decay equation which is expressed as:
An = (Ao)e^-kt
where An is the amount left in t time, Ao is the initial amount and k is a constant.
We first calculate the value of k as follows:
An = (Ao)e^-kt
0.5 = e^-k(8)
k = 0.087
We calculate the time as follows:
An = (Ao)e^-kt
15.625 = 250e^-0.087t
t = 31.87 days