What is the charge on a hypothetical ion with 55 protons and 52 electrons?

The atomic number of an element is determined by the number of A. electrons. B. protons. C. protons and neutrons. D. neutrons.

Which of the following is the most recent addition to the accepted model of the atom? A. Elections from a cloud around the nucleus. B. Neutrons orbit the nucleus along circular. C. Protons are located in the nucleus. D.

When scientific information is used for industrial purpose the discipline is known as

Equations for physic grade 9-5

The atmospheric pressure above a swimming pool changes from 753 to 772 mm of mercury. the bottom of the pool is a rectangle (11 m cross product 21 m). by how much does the force on the bottom of the pool increase

Explain constellations and galaxies in detail.

A vw bug is driving north on a striaght two lane road at a constant 38mph and a chevy impala is driving south at 29mph on the same road heading toward the vw bug (but in a different lane).

Ptolemy and Copernicus were astronomers who had proposed theories about the solar system. Ptolemy believed that the planets and the sun orbited Earth. Copernicus believed that Earth and other planets circled a stationary sun.

A TV draws 0.867 A of current when connected to a 122 V outlet. It's resistance is 140.71. A.) How many electrons pass through the TV per minute? B.) How much electrical energy does the TV convert to other forms of energy per minute?

If the pig can move the car 30 meters in 10 seconds then what is the speed for the car