Which elements will bond ionically with barium such that the formula would be written as BaX2? A) Nitrogen, Chlorine, and Sodium B) Chlorine, Iodine, and Fluorine C) Hydrogen, Bromine and Aluminum D) Oxygen and Sulfur

You see lightning before you hear thunder because A) light waves can travel through a vacuum. B) sound waves cannot travel through the air. C) light waves travel faster than sound waves. D) sound waves travel faster than light waves i think its c .

A piece of solid copper, at 10oC, is dropped into a graduated cylinder of 100°C water. Which statement BEST describes the change in heat energy in this system? A) Both water and copper temperatures decrease.

The forces acting on a child in a seat are described by a free body diagram what is the net force

Surface currents and waves are powered by what

A light bulb, a speaker, and a toaster ovens are all examples of what in an electric circuit. Question 11 options: a. resistor b. conductor cinsulator d. source

You raise a 1200-N piano a distance of 5.00 m using a set of pulleys. You pull in 20 m of rope while exerting a force of 340 N.

Ina shoots a large marble (Marble A, mass: 0.08 kg) at a smaller marble (Marble B, mass: 0.05 kg) that is sitting still. Marble A was initially moving at a velocity of 0.5 m/s, but after the collision it has a velocity of - 0.1 m/s.

The elements that touch the zigzag line ar classified as

The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed? A. 25 g B. 100 g C. 75 g D. 50 g

During a transit, a passes in front of its parent star, temporarily decreasing the star's brightness by a small amount.