What is the current produced by a 9-volt battery flowing through a resistance of 0.2 ohms?

Protons and neutrons are found within the nucleus of an atom

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

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