Answer:
a) 0 m/s
b) 4 m/s
Explanation:
The average velocity would end up being 0 because it is displacement over time and the displacement here is 0. However, speed is total distance over time which here is 400/100 so it is 4.
Answer:
B .Limited types of data Insufficient data
Explanation:
To analyse and making decision from big data we have following thing
- Sufficient data
- data analyst
- Accurate data
- data Privacy
- data storage
So, limited data or data that cannot be copied is not and obstacle in data handling. hence option B Limited types of data Insufficient data is correct.
Answer:
B. The particles of matter are in constant motion.
Explanation:
The particles of matter are always in constant motion at different speeds when exposed to certain temperatures.
Answer:
When you in a airplane you are in high altitude and thats where air density drops. Thats where ear pops come from.
Explanation:
Answer: 
Energy is directly proportional to the frequency.
The energy of a photon is given by:

Where, E is the energy and
is the frequency.
Frequency of the radio wave is given:


Multiply the above two:
Energy,

Hence, the energy of each photon of radio wave having frequency
is 