Apoint charge q moves on the x-axis in the positive direction with a speed of a point p is on the y-axis at the magnetic field produced at point p, as the charge moves through the origin, is equal to when the charge is at what is the magnitude of the magnetic field at point p? (μ0 = 4π × 10-7 t • m/a)

Asatellite component is in the shape of a cube with 10cm edges, has an evenly distributed mass of 2 kg and one bolt hole at each of four corners. if the maximum predicted random vibration environment is 10 grms, what bolt size would be a good choice for restraint? what other factors might drive bolt size besides force/stress?