Set this up as
10 = 40 (1/2)t/28
and solve for t in years.
10/40 = (1/2)t/28
log(0.25) = (t/28) log(0.5)
t = 28 log(0.25) / log(0.5) years = 56 years
Test the answer:
56 years = 2(28 years) = 2 half-lives, so the remaining amount should be 1/2 of 1/2 of the initial amount, i.e. 1/4 of the initial amount, and 10 mg = 1/4 of 40 mg.
Answer:
(11, -13)
Explanation:
The location of P is specified so that ...
(P -A) = (4/5)(B - A)
P = A + 4/5B - 4/5A = 4/5B +1/5A
P = (4B +A)/5 = (4(13, -15) +(3, -5))/5 = (55, -65)/5
P = (11, -13)
The desired point is (11, -13).
Answer:
1- Option (C)
2- TRUE
3- FALSE
Explanation:
Joints are the type of fracture that splits the rock into two parts thereby the blocks move away from one another. They are formed due to the tensional force. Whereas, the fault, in simple terms is defined as the cracks or fractures present in the crust of the earth. They are formed by both tensional as well as compressional forces. They differ from one another in terms of displacement. In a fault, the relative displacement between the blocks is more than in the case of joints.
According to the law of cross-cutting relationships, geological features such as faults, igneous intrusions, that cuts across the sedimentary layers on earth are younger than those sedimentary rocks.
A neutron is a neutral particle as it does not carry any kind of electric charge. So, the addition or elimination of neutron from the nucleus does not affect the electric charge of the nucleus. But it can cause changes in the mass within the nucleus. Isotopes originate due to the addition or removal of neutrons from a nucleus.
Hence, the correct answers are given above.
Bilawal Zardari was born to a political family who led the Pakistani people for several years. His father was assassinated and his brother was named heir to the throne. He was still studying in Oxford when this happened. But, his older brother was already unpopular in Pakistan and gave way to Bilawal to be elected as leader of Pakistani People Party (PPP) after he finished his studies overseas. <span />
