Given the distance between the presynaptic and post‐synaptic cell at a neuromuscular junction is 50 nanometers:
a) how long (in seconds) would it take the neurotransmitter, acetylcholine, to diffuse to the post‐synaptic cell following its release from the presynaptic cell? the diffusion coefficient for acetylcholine is 4*10‐6 cm2 /second.
b) what would happen to the time if the distance doubled? tripled?
c) how long would it take for a larger neurotransmitter like dopamine (d= 1.6 *10‐7 cm/sec)?

Did the proton move into a region of higher potential or lower potential? did the proton move into a region of higher potential or lower potential? because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower potential. because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential. because the proton is a positive charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential. because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential. request answerpart bwhat was the potential difference that stopped the proton? express your answer with the appropriate units.î”v î” v = nothingnothingrequest answerpart cwhat was the initial kinetic energy of the proton, in electron volts? express your answer in electron volts. ki k i = nothing ev request answerprovide feedback

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat