Электрическая дрель с 5 скоростями вращения предназначена для выполнения различных строительных работ. При одной из скоростей ротор дрели совершает 1155 оборот(-а, -ов) в минуту. Найди частоту вращения ротора и период. Частота вращения ротора ν = Гц. (Результат округли до целого числа.) Период вращения T= с. (Результат округли до сотых.)

Technology Acceleration clouds Roshydromet developed since the early 40 - ies of the XX veka.V depending on the type of cloud "treated" Reagents: silver iodide products evaporation of liquid nitrogen, solid carbon gazom.Ili use the cheapest, but unsafe for the environment option - dry tsement.Nezavisimo of reagent achieved the same rezultat.Kakoy? 1 reagent absorbs water and clouds poured out on the earth dry "rain" 2 reagents causes condensation of water vapor, cloud and rain pours in advance 3-cloud evaporates due to the heat released when dissolved in water microdroplets of these reagents 4 reagents possess a pronounced ability to absorb sunlight and disperse it into the environment as a result of the cloud dissipates 5 reagents chemically react with water vapor formed as a result of which the volatile compound; cloud while gradually evaporates 6-treated reagents cloud becomes heavy and falls to the ground on the ground in the form of fog