In chinese what tool can be used to measure the size of force

An object weighs 40n in air , weighs 20n when submerged jn water and 30n submerged in a liquid of unknown density .what is the density of the liquid?

Skeleton and keyword outlines are most appropriate for what speech style? extemporaneous impromptu manuscript memorized

Part b forty-year-old kyle wants to start investing for retirement. he wants to select a personal investment plan that will allow him to withdraw funds without paying penalties and taxes once he turns 59.5. which retirement plan should he choose? a. traditional ira b. roth ira c. 401(k)