Amachinist wishes to insert a copper rod with a diameter of 8 mm into a hole with a diameter of 7.993 mm. by how much would the machinist have to lower the temperature (in °c) of the rod to make it fit the hole?

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.