Answer: 276 days
Explanation:
This problem can be solved using the Radioactive Half Life Formula:
(1)
Where:
is the final amount of the material
is the initial amount of the material
is the time elapsed
is the half life of polonium-210
Knowing this, let's substitute the values and find from (1):
(2)
(3)
(4)
Applying natural logarithm in both sides:
(5)
(6)
Clearing :
(7)
Answer:
Single Compound
Explanation:
A synthesis reaction takes two or more reactants and reacts chemically to turn them all into one substance.
An example of a synthesis reaction is the reaction that takes place between sodium (Na) and chlorine (Cl) to create table salt.
a mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium. while waves can move over long distances, the movement of medium transmission-the material- is limited. again, the oscillating material does not move far away from its initial equilibrium position ;)
Answer:
No
Explanation:
Given that
Weight of the aluminium block = 10 N
Weight of the aluminium lead = 10 N
We know that
Weight = Volume x Density x g
Wt= V x ρ x g
The density of aluminium ,ρ=2810 kg/m³
The density of lead ,ρ=11343 kg/m³
From above we can say that density of lead is more than the density of aluminium that is why the volume of the aluminium will be more than the volume of the lead for same weight.So aluminium will displace the water but lead will not displace the water.
So the answer is ,lead does not displace the water.
