Matter is neither created or destroyed during a chemical change this is called the

Abaseball picther can throw a ball at about 90 miles per hour, v = 40 m/s, on solid rock ground. we now put him into space. when he throws the ball, which weighs mb = 0.15 kg moves away from himat the same speed. how long does it take the ball thrown in space to travel the 30 meters to the batter? he weighs mp = 100kg

What is the fate of the electrons that interact with a specimen in an electron microscope?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.