A particle with a charge of +7.4 C is separated from another charged particle with a charge of -3.6 uC by a distance of 1.4 m. Find the direction and the magnitude of electrostatic force
between the particles.

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.

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.

The energy released by a nuclear fusion reaction is produced when