Is pure water a conductor?

Is pure water a conductor?

Pure water is not a good conductor of electricity. Ordinary distilled water in equilibrium with carbon dioxide of the air has a conductivity of about 10 x 10-6 W-1*m-1 (20 dS/m). Because the electrical current is transported by the ions in solution, the conductivity increases as the concentration of ions increases.

How many feet per second does a bullet go?

Firearms expert Julian Hatcher studied falling bullets in the 1920s and calculated that .30 caliber rounds reach terminal velocities of 300 feet per second (90 m/s). A bullet traveling at only 200 feet per second (61 m/s) to 330 feet per second (100 m/s) can penetrate human skin.

How much does 50 gallons of water weigh?

A gallon of water weighs ten pounds, outside of the USA. 16 fluid ounces in a pint, is a measure of volume, not a measure of weight, which is an avoirdupois ounce (dry weight). A fluid ounce is equivalent to 1.0425 av. ounces. A gallon of water weighs 8.34 pounds.

When was Alaska purchased?

On March 30, 1867, the United States reached an agreement to purchase Alaska from Russia for a price of $7.2 million. The Treaty with Russia was negotiated and signed by Secretary of State William Seward and Russian Minister to the United States Edouard de Stoeckl.

How many people in the world are over 100 years old?

A growing number of Americans are living to age 100. Nationwide, the centenarian population has grown 65.8 percent over the past three decades, from 32,194 people who were age 100 or older in 1980 to 53,364 centenarians in 2010, according to new Census Bureau data.

How fast does a subway train go?

PATH trains are rated to travel 70 mph but they apparently never exceed 55 mph, and they only go that fast in the 5-mile stretch between Journal Square and Harrison. New York subway trains can reach 55 mph as well, but rarely get over 30 mph.

Are Caesar salads named after the Caesars of the Roman Empire?

Caesar salad has nothing to do with any of the Caesars. It was first concocted in a bar in Tijuana, Mexico, in the 1920’s.

Who is the biggest traitor in American history?

Benedict Arnold, American traitor, born — History.com This Day in History — 1/14/1741. January 14. Crime. Benedict Arnold, the American general during the Revolutionary War who betrayed his country and became synonymous with the word “traitor,” was born on this day in 1741.