Why does the screw have a very low efficiency? because with a low effort it can lift large loads. because it take a huge effort to turn in order to lift large loads. because the input work is much greater than the output work.

What type of electromagnetic radiation has a shorter wavelength than blue light

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.