Afreight train travels from miamistown to fredricksburg, a distance of 680 km. if the route takes 12.2 hours, what is the train’s average speed in kilometers per hour (km/h)?

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

Atomic nuclei of almost all elements consist of

To a of 4 x hz is 1. 0. mm nm nm