If the reaction was conducted with solid zinc twice and crushed/powdered zinc once. Which line most likely shows the rate for the reaction with the crushed/powdered
zinc?
A. 3
B. 2
C. 1

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below. your friend goes first, and you follow after he has dropped a distance of 2.0m. when your friend hits the water, is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j