A tungsten wire has a radius of 0.070 mm. When 108 V is applied across the ends of the hot wire, a current of 3.80 A is produced. How long is the wire? (The resistivity of tungsten is Ωm)

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.