Asmall metal cube measures 2.5 cm on one side. the mass of the cube is 1129.56 g. what is the density of the cube?

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

The dot diagram represents the motion of the motorcycle as it moves from left to right

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants