Physics, 05.09.2020 01:01, mercymain1014
The decay of 40K has a half of 1.3 × 10 9 years. The age of the earth is estimated at 4.6 × 10 9 years. The decay of 40K is a major heat source for the earth's interior. Relative to today, how much more heat was produced by 40K in the early Archaeon era or 3.9 × 10 9 years ago?
Answers: 2
Other questions on the subject: Physics
Physics, 22.06.2019 06:00, ayoismeisalex
Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?
Answers: 1
Physics, 22.06.2019 12:20, luella614ox1zum
The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.
Answers: 2
Physics, 22.06.2019 12:30, cardsqueen
Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j
Answers: 3
Physics, 22.06.2019 20:30, adrianayepez8
Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.
Answers: 3
Do you know the correct answer?
The decay of 40K has a half of 1.3 × 10 9 years. The age of the earth is estimated at 4.6 × 10 9 yea...
Questions in other subjects:
Mathematics, 25.02.2020 17:28
Mathematics, 25.02.2020 17:28
Computers and Technology, 25.02.2020 17:29
