Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. the leaf of a corn plant has a resistance of 2.3 mω measured between two electrodes placed 20 cm apart along the leaf. the leaf has a width of 2.1 cm and is 0.20 mm thick. a. what is the resistivity of the leaf tissue? b. is this greater than or less than the resistivity of muscle tissue in the human body?

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281