If the mobility of the electron in the metal increases then its resistivity mcq​

Who was the first scientist to measure speed as distance over time?

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?