The power radiated by a filament is 0.3 watts. The diameter of the filament is 0.5 millimeters, and it has a length of 50 millimeters. If the surface area is 4 x 10^-8 m^2?, what is the temperature?​

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical