What is a half circle that extends from the north pole to the south pole?

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

Select the correct answer. what does the process of natural selection involve?

What will happen in a hybrid vehicle if current flow becomes too high due to a short?