A. cgi... they're usually filmed with a greenscreen and is keyed out in editing. known as chroma keying
Answer:

Explanation:
In the question given :
Pressure is constant
Therefore, Work done, 
Pressure, P=1.01 × 105 Pa.
Final volume, 
Initial volume, 
Therefore, W=8.58\times 10^{5}\ J.
Also, Heat Given, 
Also, according to First law of thermodynamics:

Hence, this is the required solution.
Answer:
They would land at the same time
Explanation:
They would land at the same exact time.
As weird, impossible and unbelievable as it appears. When in a vacuum, every weight, body and material when released from the same height would land on the ground at the same time. This also means that like in the question, a feather and a ball would land at the same time. And just for illustrations as well, a feather and a car would land at the same time as well.