How many protons does a neutral atom of oxygen-18 have

Why does water stay in a straw if you put your finger over it?

A person with serious mental illness (SMI) lives in a "parallel universe" separate from "normals" (the name used to describe people who have no mental illness). What causes this condition?

Two identical 2.55x10^-4 C charges are held 0.500 m apart. The second one is released. When it reaches a distance of 2.15 m from the other charge, how much has the electric potential energy changed? (Unit=J)

What happened in 1990 on the island of Luzon

Amber moves from her desk to the door in 17 seconds. Her speed changes from rest to 5 m/s. What is Amber's average acceleration?

True or false most americans live in rural areas

State the law of refraction

A maroon plane has a takeoff speed of 88.3 m/s and requires 1635 m to reach that speed. Determine the acceleration of the plane

Ram is going to the library from his house. He goes 3meters to the East from his house and then goes 4meters North to get to the library. Calculate the displacement traveled from his house to the library and back to his home. a. 7meters b.

How are Saturn and Uranus similar? Neither planet has a tilted axis. They both rotate backwards. They both have rings. They are both found inside the asteroid belt.