Which of the following would be best used as an electrical insulator?
a. copper
b. silver
c. salt water
d. wood

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false