Design an electrocardiograph with an input-switching system such that we can record any one of the six frontal-plane leads. Include resistors for the leads connected to Wilson's central terminal. The switch can have up to 6 positions and you can use as many switches as needed. Hook the output of the switch(es) to the inverting and non-inverting inputs of an instrumentation amplifier. Upload a sketch of your design.

Aheat pump using refrigerant-134a heats a house by using underground water at 8°c as the heat source. the house is losing heat at a rate of 60,000 kj/h. the refrigerant enters the compressor at 280 kpa and 0°c, and it leaves at 1 mpa and 60°c. the refrigerant exits the condenser at 30°c. determine: (a) the power input to the heat pump, (b) the rate of heat absorption from the water, and (c) the increase in electric power input if an electric resistance heater is used instead of a heat pump