Dos cargas puntuales q1 = −50μC y q2 = +30μC se encuentran encima de una recta, Determine: a) la distancia que se deben separar las
cargas q1 y q2 para que la fuerza eléctrica entre ambas cargas sea de 10
N , b) a que distancia la fuerza se duplica c) a que distancia la fuerza se
quintuplica

What are similarities and differences between refraction, reflection, diffraction and absorption?

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)