Children have about 1016 synapses that can transfer signals between neurons in the brain and between neurons and muscle cells. suppose that these synapses simultaneously transmit a signal, sending 1000 calcium ions (ca2+) across the membrane at each synaptic ending. determine the total electric charge transfer in coulombs during that short time interval. by comparison, a lightning flash involves about 5c of charge transfer. (note: this is a fictional scenario. all human neurons do not simultaneously produce signals.) e=1.6×10−19c.

How is zig zagging a form of acceleration?

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)

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.