Apendulum starts out at its highest point with 10 joules of potential energy. when it reaches the lowest point of its swing, how much energy does it have?

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.