What are the four planets that orbit closets to the sun what are they and what characteristics do they have

Which type of basaltic lava flow has a fairly smooth

Which of these metals are magnetic?

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .