Sobre um bloco atuam duas forças de módulo 150n como mostra a figura a seguir. sendo o cos50º= 0,64 e o sen50º= 0,76 o módulo da força resultante é aproximadamente: A- 82,6
B- 114,0
C- 96,0
D- 102,5
E- 150,0

Describe the path of a ray that approaches a mirror parallel to the principal axis.

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.

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly