Duas partículas iguais (Q1=Q2) eletricamente carregadas são colocadas no vácuo a uma distância de 30 cm. A força de interação entre essas cargas é:
Q1 = Q2 = 8x.10^-6C

a) de repulsão e igual a 6,4N
b) de repulsão e igual a 1,6N
c) de atração e igual a 6,4N
d) de atração e igual a 1,6N

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

Observations show that interstellar clouds can have almost any shape and

Find the mass by adding the numbers from the three sliders