When a 109 db sound wave comes through an open window of area 0.485 m2, how much acoustic energy passes through the window in a 10.9 min interval?

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.

An object in mechanical equilibrium is an object

What is the answer to these problems 30 pt