Answer:
There are kilograms of radioactive material after 300 seconds.
Explanation:
From Physics we know that radioactive materials decay at exponential rate, whose differential equation is:
(1)
Where:
- Rate of change of the mass of the radioactive material, measured in kilograms per second.
- Current mass of the radioactive material, measured in kilograms.
- Decay constant, measured in .
The solution of the differential equation is:
(2)
Where:
- Initial mass of the radioactive material, measured in kilograms.
- Time, measured in seconds.
If we know that , and , then the initial mass of the radioactive material is:
There are kilograms of radioactive material after 300 seconds.
Hey There!
When the gas temperature decreases the volume decreases too.
Thank You!
Have a question? Need Support? Feel free to message me.
Yes. That's why it's called equipotential...
Explanation:
It is given that,
Mass of the car 1,
Initial speed of car 1, (east)
Mass of the car 2,
Initial speed of car 2, (north)
(b) As the cars stick together. It is a case of inelastic collision. Let V is the common speed after the collision. Using the conservation of momentum as :
The magnitude of speed,
V = 12.22 m/s
(b) Let is the direction the wreckage move just after the collision. It is given by :
Hence, this is the required solution.
The answer is 7 electrons. We know that Carbon has 6 electrons, so we could see that there is the charge that is -1, meaning there has to be one more electron than proton because that means it's gained an electron of -1 charge. Therefore 7 electrons to 6 protons.