What did classical physics predict would happen to the light given off by an object as its temperature increased? a. the frequency of the light would increase from visible light into the ultraviolet range. b. the color of the light would change from violet to red, and the brightness would decrease. c. the color of the light would not change, but the brightness would increase. d. the frequency of the light would increase from visible light into the infrared range.

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