Which type of light bulb glows when a filament inside it gets hot?

Ireally need this answer sombody fast fast

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples