A train traveled 2/3 of a journey in 6 hours. Then, it traveled the remaining 300 miles in 4 hours. What was the total average speed for the whole journey?

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?