The mass number of iodine is 126, and it’s in the 53rd place in the periodic table. It has protons and neutrons.

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

If steel is more dense that lake water, why can a boat float

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.