How did the study of the atom contribute to our understanding of the periodic table of the elements? (1 point) Experiments that identified characteristics of atoms provided scientists with atomic weights and atomic
numbers, which were used to organize the periodic table.
Atoms are representative of elements, so scientists scaled up atomic characteristics to understand
elemental characteristics, allowing scientists to arrange elements in a periodic table
It
Ite
The determination of electron charge led to an understanding of how atoms interact with one another, which
facilitated the organization of the periodic table.
Ite
Ite
Elements are made of atoms, so understanding atoms provided information about elements, which led to
the organization of the periodic table
Ite
https://prodpex-cdn- emssvc. connexus. com/index. ht...

Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is

Comedians like to joke that the reason we haven’t been visited by intelligent life from elsewhere in the universe is that aliens have been monitoring earth’s broadcasts of intellectually embarrassing tv programs, like gilligan’s island, fear factor, the jersey shore, and the jerry springer showand so consider us far too primitive to merit a visit. let’s check the assertion that aliens could have been receiving them. tv programs are broadcast at a frequency of about 100mhz with about 100kw of total power in 30frames per second, which emanatesroughly uniformly in all directions. assume that interstellar space transmits these broadcasts without attenuation. no matter how smart they are, aliens would require at least one photon per frame to interpret our signals. findthe number of photons per unit time per unit area reaching a receiver on a possible planet in the nearest star system, which is about 4 light-years away (a light-year is the distance light travels in a year). if aliens aimed a receiver or detector directly at earth, how big (in diameter) would it have to be to receive a photon per frame

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?