HELP DUE SOON Why must many of the telescopes that detect invisible wave, such as infrared, microwaves, and gamma rays, be placed in space?

a Most radiation reaching Earth from space is blocked by the atmosphere. Therefore, some telescopes must be placed above the atmosphere.

b There are not enough places on land to build observatories that hold large telescopes.

c All telescopes must be placed in space. There are not telescopes on land.

d The waves in the electromagnetic spectrum are all too small to be detected by telescopes on land. Therefore, in order to see any EM radiation, telescopes must be placed in space.

Ibelieve the answer is b

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.

From my calculation, i got 3.655moles