Help is wanted! Please and thank you! A singer is singing a 200hz note. Which of the following notes should the second singer sing so that the two singers *sound good* together.

181hz
230hz
400hz
333hz

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.

J. j. thomson’s experiment disproved the theory that an atom