Sound wave frequency difference

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

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?