The sum of two vectors of fixed magnitudes has the greatest magnitude when the angle between these two vectors is A) 90°
B) 180°
C) 60°
D) 0°
E) 270°

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.

What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?

Calculate 9 ∙ 10-5 divided by 3 ∙ 10-9. (box after the "10" in answer is for the