Is the number of protons and electrons the same for a neutral atom of a given element?

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

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.

At what time would the magnitude of the velocity reach 36.00 km/hr