Answer:
1000/second
Explanation:
A nerve impulse is rise or fall of membrane potential in a certain region of a cell.
One nerve impulse lasts for 1 ms which is 10⁻³ seconds.
In the question it is given that one nerve impulse begins after one nerve impulse ends.
In 1 second there are 1000 ms.
So, the neuron firing rate would be 1000/second. This means that a nerve impulse will fire a thousand times each second.
That's a reasonable request, but right now, there's no way to do it yet. First, we need all the information that's in the REST of the question . . . the whole part BEFORE where you started copying.
Let m₁ = 3.0 kg and v₁ = + 8 m/s (so right is positive), and m₂ = 1.0 kg and v₂ = 0. The total momentum of the two balls before and after collision is conserved, so
m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'
where v₁' = + 5 m/s and v₂' are the velocities of the two balls after colliding, so
(3.0 kg) (8 m/s) = (3.0 kg) (5 m/s) + (1.0 kg) v₂'
Solve for v₂' :
24 kg•m/s = 15 kg•m/s + (1.0 kg) v₂'
(1.0 kg) v₂' = 9 kg•m/s
v₂' = (9 kg•m/s) / (1.0 kg)
v₂' = + 9 m/s
which is to say, the second ball is given a speed of 9 m/s to the right after colliding with the first ball.
Answer:
![i=-66.6\times10^{-6}\;\;Amp](https://tex.z-dn.net/?f=i%3D-66.6%5Ctimes10%5E%7B-6%7D%5C%3B%5C%3BAmp)
Explanation:
Given,
![C=3\mu F\\V=6.0 volt\\R=4\Omega\\t=14\mu sec\\](https://tex.z-dn.net/?f=C%3D3%5Cmu%20F%5C%5CV%3D6.0%20volt%5C%5CR%3D4%5COmega%5C%5Ct%3D14%5Cmu%20sec%5C%5C)
Now, charge in capacitor
![q_o=CV\\q_o=3\times10^{-6}\times6\\q_o=18\times10^{-6}\;\;C](https://tex.z-dn.net/?f=q_o%3DCV%5C%5Cq_o%3D3%5Ctimes10%5E%7B-6%7D%5Ctimes6%5C%5Cq_o%3D18%5Ctimes10%5E%7B-6%7D%5C%3B%5C%3BC)
For discharging the RC circuit,
![q=q_oe^{-t/\tau}](https://tex.z-dn.net/?f=q%3Dq_oe%5E%7B-t%2F%5Ctau%7D)
Differentiate with respect to the <em>'t'</em>
![\frac{dq}{dt}=-q_o\frac{t}{RC}e^{t/RC}\\i=-q_o\frac{t}{RC}e^{t/RC}\\i=-18\times10^{-6}\frac{14\times10^{-6}}{4\times3\times10^{-6}}e^{\frac{14\times10^{-6}}{4\times3\times10^{-6}}}\\i=-66.6\times10^{-6}\;\;Amp](https://tex.z-dn.net/?f=%5Cfrac%7Bdq%7D%7Bdt%7D%3D-q_o%5Cfrac%7Bt%7D%7BRC%7De%5E%7Bt%2FRC%7D%5C%5Ci%3D-q_o%5Cfrac%7Bt%7D%7BRC%7De%5E%7Bt%2FRC%7D%5C%5Ci%3D-18%5Ctimes10%5E%7B-6%7D%5Cfrac%7B14%5Ctimes10%5E%7B-6%7D%7D%7B4%5Ctimes3%5Ctimes10%5E%7B-6%7D%7De%5E%7B%5Cfrac%7B14%5Ctimes10%5E%7B-6%7D%7D%7B4%5Ctimes3%5Ctimes10%5E%7B-6%7D%7D%7D%5C%5Ci%3D-66.6%5Ctimes10%5E%7B-6%7D%5C%3B%5C%3BAmp)