An atom of sodium-23 (atomic number = 11) has a positive charge of +1. given this information, how many
electrons does it have? how many protons and neutrons does this atom have?

Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?

What type of nuclear decay causes the atomic number of an element to increase by 1?

Asystematic approach to problem solving is called a (an)