ect all that apply. What three things provided agricultural breakthroughs in Europe during this age? three-crop field rotation system the plowshare and moldboard new kinds of seeds thousands of acres cleared of trees warmer climate

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?