Un balon de 180kg cae 2.5 m ¿Cuanto trabajo hace la Fuerza de gravedad sobre el balon?

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

How do you tell if someone actually cares about you? and just say they do?