Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A nerve cell in its resting state has a membrane potential of -70 mV, meaning that the potential inside the cell is 70 mV less than the potential outside due to a layer of negative charge on the inner surface of the cell wall and a layer of positive charge on the outer surface. This effectively makes the cell wall a charged capacitor. When the nerve cell fires, sodium ions, Na+, flood through the cell wall to briefly switch the membrane potential to +40mV. Model the central body of a nerve cell-the soma-as a 50-m-diameter sphere with a 7.0-nm-thick cell wall whose dielectric constant is 9.0. Because a cell's diameter is much larger than the wall thickness, it is reasonable to ignore the curvature of the cell and think of it as a parallel-plate capacitor.
How many sodium ions enter the cell as it fires?
A biology student utilizes a simple magnifier to examine the structural features of the wing of an insect. The wing is held 3.75 cm in front of the lens, and the image is formed 26.0 cm from the eye. What is the focal length of the lens?
A beam of unpolarized light shines on a stack of five ideal polarizers, Find the angle between the axes of each pair of adjacent polarizers
In the above animation a massive block is attached to a spring. It is sliding back and forth on a frictionless table. The spring has a spring constant 250 N/m. Determine the mass of the block
A mono energetic beam of electrons (me = 9.11 x 10-31 kg) whose kinetic energy is 120 eV is incident on a single slit of width 1.0 nm. A diffraction pattern is formed on a screen 20 cm from the slit. What is the width of the central maximum (i.e. the..
A 20 kilogram toboggans with 70.0 kilogram driver is sliding down a frictionless chute directed 30o below the horizontal at 8.00 m/s, find the subsequent velocity of the toboggan immediately after impact
Calculate the force required to pull at constant velocity a block of mass 150g up a 15 degree incline. Coefficient of friction is 0.2
q. a small block with a mass of 0.170 kg is attached to a cord passing through the hole in a frictionless horizontal
Hydraulic engineers often use, as a unit of volume of water, the "acre-foot", What volume of water, in acre-feet, fell on the town
A 80.0 box contains helium at a pressure of 1.50and a temperature of 110. What is the initial thermal energy of each gas
The capacitor in an RC circuit(R = 100 Ω, C = 45 uF) is initially uncharged. Find the charge on the capacitor in the circuit one time constant (r = RC) after the circuit is connected to a9.0-V battery.
A transformer has input voltage and current of 12 V and 6 A, and an output current of 0.8 A. how many turns are on the primary side
if only electric forces are important conservation of mechanical energy tells us kinit uinit kfinal ufinal. in
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd