a beaker has a mass of 200g. What is the mass of a liquid if the beaker plus the liquid have a mass of 286 g?

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

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

The least penetrating form of radiation is