Atissue sample from a mammalian heart was measured for its resistivity. held at room temperature, its resistivity is around 1.40 m. calculate the resistance of a tissue sample with 1.00 mm in length and diameter of 2.00 mm. calculate the new resistivity and resistance of the sample when a solution with caand my is introduced and decreases the original resistivity by 32.0%. calculate the old and new conductivities of the sample. which is a better conductor?

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?