After an incandescent lamp is turned on, the temperature of its filament rapidly increases from room temperature to its operating temperature. as the temperature of the filament increases, what happens to the resistance of the filament and the current through the filament?
(1) the resistance increases and the current decreases.
(2) the resistance increases and the current increases.
(3) the resistance decreases and the current decreases.
(4) the resistance decreases and the current increases

Stars x and y are both bluish main sequence stars. star x has a higher absolute brightness than star y. how do the two stars compare? explain

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work