A steel wire 2.0m is length and 2.0mm inn diameter supports 10-kg mass. What is the stress in the wire?
(a) 3.010 (6) 3.11 N/m² (c) 31N (d) 3.1 x 10'N/m
2

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.

Which sound characteristic is not affected by the relative motion of an object

In a hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. how many unique charge-pairs are there (without double counting)?