When a pitcher throws a baseball, it reaches a top speed of 42 m/s. If the baseball takes 2 seconds to travel from the pitcher to the catcher, what is its acceleration? (Assume the ball is moving at O m/s right before it leaves the pitcher's hand.) O A. 15 m/s2 O m B. 48 m/s2 O c. 36 m/s D. 21 m/s2 SUBMIT​

Carbon 14 is a naturally occurring stable

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

Ahuge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. the upper face carries +95.0 nc/m2 while the lower face carries -25.0 nc/ m2. what is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ε0 = 8.85 × 10-12 c2/n · m2)