25 km/h means that 15 kilometers will be 15/25ths of an hour. Therefore, 3/5 of an hour is 36 minutes, so it would take 36 minutes to fly that distance.
Okay, I don't know if this question is supposed to be a trick question or not. The weight of the apple does not change as the plane travels up the atmosphere, but the MASS changes. Weight doesn't change no matter what environment you're in, but the mass changes in different environments. In this case, the weight is constant but the mass is decreasing as you go higher up.
Body Centered Cubic Structure<span>. - </span>Every atom except those<span> on the </span>surface<span>; </span>has eight neighbors<span>. Metals that </span>have<span> this </span>arrangement<span>: Sodium, Potassium, Iron.
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Electromagnetic waves going through outer space has the greatest speed among all kind of waves.
Option B
<u>Explanation</u>:
Electromagnetic waves are the waves that can go through the vaccum of space. Electromagnetic waves are made by the vibration of an electric charge. This vibration makes a wave that has both an "electric and magnetic nature". An electromagnetic wave transfers energy through a vaccum at a speed of 
(speed esteem ordinarily depicted by the sign c). The spread of an electromagnetic wave through a material medium happens at a net speed which is under .
