Does the thickness or length of a nail affect the electromagnets strength

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

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 .

(asap) uneven heating of the earth's surface is due primarily to the position of the equator, north pole, sun, or moon?