Modern atomic theory states that atoms are neutral. how is this neutrality achieved in atoms? having more neutrons than protons or electrons having equal numbers of protons and electrons having fewer neutrons than protons or electrons having equal numbers of protons and neutrons

Can anybody me with this? ? (picture included.)

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?