Leaning against a smooth wall is a uniform board of length L as indicated in the sketch. The board has a mass of 10 kg. Calculate the forces exerted on the board by the floor and the wall​

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?