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.
answer; ////(a)///100kg 1.0m
the formula for acceleration is the velocity times the inverse of time so it would be 21 times 1/13. so roughly 0. is the acceleration(m/s^2).
in physics, a system in which net external force is equal to zero is called as an isolated system.
it is a well known fact after the universe that the net energy of the system is constant.
so, our universe could be considered as an isolated system because energy or matter doesn't exchange with surroundings. so, it is believed that no energy or matter exists outside the universe.