1 ) J.J. Thompson discovered the electron and put forward the 'plum pudding model' with charges spread evenly throughout the atom, in 1897
so the correct answer would be a positive solid sphere with electrons dispersed throughtout
Answer:
If the half-life of 14C is 5730 years, when this period of time has passed it will have been halved, it is called the exponential decay law of radioactive isotopes.
Transferring heat through electromagnetic waves
The characteristics of the atmosphere and the types of thermal conduction allow finding that the response for conduction by convection in the space station is:
-
There is no convection outside the station but there is not atmosphere (mass of gases) around it.
The thermal conduction is the exchange of thermal energy between objects with different temperatures, it has three types:
- Conduction. It takes place when two bodies are in contact and exchange energy from the one with the highest temperature to the one with the lowest temperature, without exchange of matter
- Convection. It takes place when there is an exchange or movement of matter between the two bodies
- Radiation. It is presented by electromagnetic wave radiation from all bodies at a temperature greater than 0K.
The international space station is located 400 km above the earth's surface, this area of the atmosphere is called the thermosphere, it has some gases with Nitrogen, oxygen, the density is extremely low, so there is no gasses around the space station.
For there to be thermal conduction by convection current, there must be an atmosphere around the international space station, but because of this in the thermosphere there is no atmosphere, therefore convection currents cannot occur and the main loss of energy is due to radiation.
In conclusion, with the characteristics of the atmosphere and the types of thermal conduction, we find that the response for conduction by convection in the space station is:
-
There is no convection outside the station but there is not atmosphere (mass of gases) around it.
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Answer:
The study of movement, distribution and quality of water.
Explanation:
They measure the properties of bodied of water, such as the volume of and stream flow.
