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

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.