Answer:
Because of the formula
Explanation:
In this problem we are describing two different processes:
- Nuclear fission occurs when a heavy, unstable nucleus breaks apart into two or more lighter nuclei
- Nuclear fusion occurs when two (or more) light nuclei fuse together producing a heavier nucleus
In both cases, the total mass of the final products is smaller than the total mass of the initial nuclei.
According to Einsten's formula, this mass difference has been converted into energy, as follows:
where:
E is the energy released in the reaction
is the mass defect, the difference between the final total mass and the initial total mass
is the speed of light
From the formula, we see that the factor is a very large number, therefore even if the mass defect is very small, nuclear fusion and nuclear fission release huge amounts of energy.
Answer:
that the correct one is C
Explanation:
In relative motion problems, in this case the boat and the river, with respect to the land and between them, the most common questions are:
* What is the time to cross the river
* How far down does the boat go
* What direction the boat must have to reach the opposite shore
examining the answers we see that the correct one is C
Answer:
10 mph
Explanation:
- Exceeding speed limit is one of the major causes of road accident.
- Crash severity increases with the speed of the vehicle at impact.
- The probability of death, disfigurement, or debilitating injury grows with higher speed at impact.
The above consequences double for every 10 mph over
50 mph that a vehicle travels.
1) find speed (8.8 m/s)
2) find acceleration (38.7 m/s^2)
answer is about 38.7 m/s^2