A machine has velocity ratio 6 and it 70℅ efficiency what effort will be needed to lifting a load 300N with aid of his machine​

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass

Select all that apply genes are specific nucleotide sequences occur in numbers that are the same as the number of chromosomes are located in a specific place on a chromosome determine the traits of an organism are units of rna

What materials must dams have to produce electricity, and what must occur?