Two rectangular surfaces are perpendicular to each other with a common edge that measures 1.6 m. Surface one is 0.8 m wide, has an emissivity of 0.75, and is maintained at 450 K. Surface two is a blackbody that measures 1.2 m high and is maintained at 700 K. If the surrounding surfaces are taken to be at 290 K with an emissivity of 0.85, what is the net rate of radiative heat transfer between the two surfaces and between surface one and the surroundings

you have to draw the persons position over there

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air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.