An astronaut circles the earth in a satellite at an altitude of 150 km. if the diameter of his pupils is 2.0 mm and the average wavelength of the light reaching his eyes is 550 nm, is it conceivable that he can distinguish sports stadiums on the earth's surface? private houses? cars?

d = 49.5 m

hence we can say it is conceivable that he can distinguish sports stadiums on earth's surface but in Private houses? Cars? it can not becayuse they are are very small

Explanation:

Given data

altitude = 150 km

diameter = 2.0 mm

wavelength = 550 nm

to find out

is it conceivable that he can distinguish sports stadiums

solution

we will apply here formula that is

∅ = 1.2 λ  / D

put here λ  = 550 × m and D = 2 × m

∅ = (1.2 ) 550 ×  / 2 ×

∅ = 3.30 ×   rad

so

d = 150  × × 3.30 ×  

d = 49.5 m

hence we can say it is conceivable that he can distinguish sports stadiums on earth's surface but in Private houses? Cars? it can not becayuse they are are very small

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

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.