Figure 1 Structure of an Atom 1. What part of the atom is identified as c?
2. What does d in the diagram represent?
3. How many protons does the atom have?
4. How many neutrons does the atom have?
5. What is the atomic mass of the atom?
6. What is the atomic number of the atom?

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.

Most short-period comets do not have randomly oriented orbits because

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples