Compute the electrical conductivity ((ωm)−1 ) of a cylindrical silicon specimen 5.1 mm in diameter and 51 mm in length in which a current of 0.1 a passes in an axial direction. a voltage of 12.5 v is measured across two probes that are separated by 38 mm.

True or false: the revolution of the earth creates day and night as it rotates around the sun

An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great. d) about 10 times as great.