An infinite sheet of charge is located in the y-z plane at x = 0 and has uniform charge denisity σ1 = 0.25 μC/m2. Another infinite sheet of charge with uniform charge density σ2 = -0.42 μC/m2 is located at x = c = 36 cm.. An uncharged infinite conducting slab is placed halfway in between these sheets ( i. e., between x = 16 cm and x = 20 cm). 1)What is Ex(P), the x-component of the electric field at point P, located at (x, y) = (8 cm, 0)?

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.