Answer:
The correct answer would be = t = 2.112 billion years
Explanation:
Given:
The number of crystal of uranium = 275 billion
The number of crystal of lead = 1925 billion
The half-life for 235U = 704 million years
Formula using :
N = N0e−λt
where,
no. of daughter atoms = N
at time t= 0, No. of parent atoms = N0.
Time = T
Half life = 0.693/λ
Decay constant = λ
Solution:
by putting value in the formula of the half-life
λ = 0.693/0.704
λ = 0.9844
Now, putting value in the formula for the age of granite.
275 = (275+1925)e^-0.9844 t
1/8= e^-0.9844 t
e^0.9844 t = 8
taking log
0.9844t = 2.07944
t = 2.112 billion years
A theory is an idea that has yet to be proven by experimentation. A law is a theory that has been proven correct.
Mach what item?. Isn't there suppose to be answers to go with it? :/
Answer:
Option (B).
Explanation:
Mixture may be defined as the solution obtained by mixing of two or more substances together. Two different types of mixture are homogeneous mixture and heterogeneous mixture.
Homogeneous mixture may be defined as the mixture that has uniform composition throughout the mixture and cannot be separated easily by physical shaking process. Heterogeneous mixture are the mixtures that has different composition throughout the mixture and can be separated by simple shaking.
Thus, the correct answer is option (B).
A deuterium nucleus consists of one proton and one neutron. The quark composition of a deuterium nucleus is
A- 2 up quarks and one down quark
B- 2 up quarks and 4 down quarks
C- 3 up quarks and 3 down quarks
D -4 up quarks and 2 down quarks
The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks. Thus, option "C" is correct.
<h3>What is the composition of quark?</h3>
The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks. The overall charge of the deuterium nucleus is +1. Comparing the given overall charge to the chart of the Particles of the Standard Model, the overall charge can be determined from the combinations of the choices.
Thus, option "C" is correct.
To learn more about quark composition click here:
brainly.com/question/27881076
#SPJ1