If at a particular instant and at a certain point in space the electric field is in the x-direction and has a magnitude of 3.00 V/m, what is the magnitude of the magnetic field of the wave at this same point in space and instant in time

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.