A+2.00 μc charge is located at the origin of our coordinate system. a second charge,-4.00 μc, is located on the +x-axis at x-0.500 m. a third charge of +5.00 hc is located at x- o, y 0.500 m. assume the charges fixed. determine the force acting on the +2.00 μc charge. show your calculations here. remember that force is a vector quantity. express your answer in polar coordinates (magnitude and direction). are stationary and force on +2.00 uc charge-

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

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)

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell