Whats the difference between gamma rays and radio waves

What are the dimensions of the cross section that passes through the points a, f, g, and d?

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.

One soccer player (a) is moving at 4 km/h when she kicks the ball while another soccer player (b) is moving at 8 km/h. what statement accurately compares their kinetic energy if they have the same mass? a) both soccer players have the same kinetic energy. b) player b has twice the kinetic energy of player a. c) player b has four times the kinetic energy of player a. d) their kinetic energy can't be compared without knowing their mass.