A sodium ion has 11 protons and 10 electrons. what is its charge?

The shorter the the wavelength the blank frequency

The chains and sheets of galaxies and voids between them observed in the large-scale structure of the universe were once thought to be inconsistent with the Big Bang theory.

An object is dropped from 26 feet below the tip of the pinnacle atop a 702 ft tall building. The height h of the object after t seconds is given by the equation h=-16t^2+676. Find how many seconds pass before the object reaches the ground.

What average force is required to stop a 900 kg car in 5 seconds if it was initially traveling at 80 km/hr?

A researcher would like to perform an experiment in a zero magnetic field, which means that the field of the earth must be canceled. Suppose the experiment is done inside a solenoid of diameter 1.0 m, length 3.0 m, with a total of 5000 turns of wire.

Why is it useful for pairs of DNA to be held together by men bonds and not covalent bonds?

World class speed skaters can skate a 3,000-m course in about 4 minutes. What is their average speed for this course? A. 12.5 m/s B. 1.33 m/s C. 1.25 m/s D. 13.3 m/s

A building that is 105.50 ft. feet tall is casting a shadow that is 37.50 ft. feet. If the building next to it, is casting a shadow of 41.00 ft. feet, how tall is that building?

What is the technical name for super glue type adhesives

On his fishing trip Justin takes the boat 25 km south. The fish aren't biting so he goes 10 km west. He follows a school of fish 15 km north. What distance did he cover? What was his displacement?