Which of the following factors contributes to the increase in atomic size within a group in the periodic table as the atomic number increases?
A more shielding of the electrons by the highest occupied energy level
B an increase in size of the nucleus
C fewer electrons in the highest occupied energy level
D an increase in number of protons

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

Explain what happens at the saturation point when adding salt to water at room temperature.

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery