Read the passage below about different types of radiation. different types of radiation have different penetrating abilities. for example, gamma rays can pass through cloth and paper, but alpha particles are blocked by cloth and paper. beta particles are blocked by aluminum foil, but gamma rays are not. however, all three types of radiation are blocked by thick concrete or lead. now, examine a table of penetrating powers of different types of radiation. material 1 2 3 lead stopped stopped stopped cloth not stopped stopped stopped aluminum foil not stopped stopped stopped wood not stopped stopped stopped paper not stopped stopped not stopped thick concrete stopped stopped stopped based on the information, at which numbered spot in the table does each type of radiation belong?

In the given information all the radiations were stopped by the lead block, if we assume that first radiations were gamma radiation, as they were not stopped by the cloth whereas all other radiations were stopped.

In second case, aluminum foil and wood were able to block alpha and beta radiations. Whereas, paper was used to stop the alpha particles but not the gamma and beta rays. And then a thick concrete stopped all the radiations.

This clarifies that the first radiation are gamma rays, second is alpha rays and third is beta rays.

its d on edgd 2020

Explanation:

just took the test

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.