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.

power out to power in less than 100%

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.