Neutrons could never reach the center of the Earth even if they lived for a very long time. They scatter with the nuclei they meet. So they bounce in all directions, never getting far in 1 particular direction. The collisions with nuclei cause them to loose energy (=speed) until they are almost...
If the source moves the sound waves have a different frequency in the medium (compared to when the source would stand still or move with a different velocity).
That is NOT the case for the detector: the frequency in the medium does not depend on the speed of the detector. Note that the...
Does this mean that these peaks show the gamma rays that did not interact with atoms or electrons and went right to the detector?
Answer: Yes (they only interact in the detector and their energy is totally absorbed inside the detector)
With that said, does this mean that from channel 300...
Chemical toxicity
Plutonium is not only dangerous as a radiation source. It also has a chemical toxicity. It is a heavy metal that is likely to be absorbed by the bone surface, and there it can stay for years and release its radiation.
It is the combination of radiation and chemical toxicity...
Thanx a lot, but unfortunately these answers only solve a part of my problem.
The actual question is: what power must a rocket deliver so that its upward force equals the gravitational force. So the rocket will 'float' above the launch platform.
There is no upward or downward speed, except...
Maybe this problem is easy to solve, but I can't find a way out.
I need to know what power is needed to create an acceleration of 9.81 m/s^2.
For an object with a mass of 1 kg.
A constant force of 9.81 N is needed (that's easy :rolleyes: ).
But what power is needed to create such a...