Awire is 1.2 m long and 1.2 mm2 in cross-sectional area. it carries a current of 4.8 a when a 2.4 v potential difference is applied between its ends. calculate the conductivity ? of the material of which this wire is made.

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)

Both speed and velocity measure how fast something is moving. however, since speed is not a it does not require a(n question 6 options: a) quantity , unit b) magnitude, unit c) scalar, direction d) vector, direction