Is positive charge in the nucleus of an
atom of an element
equal to its atomic
number?

What produces a record of seismic waves? richter scale seismogram barometer seismograph

Mike walks 100 meter north, then walks 30 meters south. after this, he walks another 10 meters north. what is the magnitude of his total displacement during this walk,in meters?

Aracecar driver has to hold on tightly when going around a banked curve. approximately what is the centripetal force on a 2220.0 kg car going around a circle with a diameter of 190.0 meters at 25.0 m/s?