use the periodic table to write balanced equations for the decay of the following isotopes and beta decay. the alpha decay of 226/88 Ra : 226/88 Ra ⇒ + the beta decay of 218/84 Po: 218/84 Po⇒ +

What will a positive and a negative charge do if they are separated from each other?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

How does an observation about an object differ from an inference about that object