A composite series wall has an inside surface temperature of
1600F and outside surface temperature of 500F. If it consists of
3.5 in. of mineral wool, 0.05 in. of plaster on the outside, and
0.75 in. of cork board on the inside, determine the heat loss in a
120 square foot of wall.
What is the resting potential? What are the charges inside and
outside of the neuron? Which ions are found in and outside of the
neuron? When the neuron is at a resting potential, is it polarized,
depolarized, repolarized
particle of mass m, which moves freely inside an infinite
potential well of length a, is initially in the state Ψ(x, 0) = r 3
5a sin(3πx/a) + 1 √ 5a sin(5πx/a). (a) Normalize Ψ(x, 0). (b) Find
Ψ(x, t). (c) By using the result in (b) calculate < p2 >. (d)
Calculate the average energy
The volumetric charge density in a cylinder with a radius of
infinite length changes from the axis to ?? = ??. Here k is a
constant. Find the electric field inside (r <a) and outside
(r> a) of the cylinder.
An action potential is
a. a reversal of the Na+ and K+ concentrations inside and outside
the neuron.
b. the same size and shape at the beginning and the end of the
axon.
c. initiated by inhibitory post synaptic graded potentials.
d. transmitted to the distal end of a neuron and cause release of
neurotransmitter.
e. Both b and d are correct
2. Axonal transport refers to:
a. the release of neurotransmitter molecules into the synaptic
cleft.
b. the use...
An infinite nonconducting sheet has a surface charge density
σ = 8.00 pC/m2.
(a) How much work is done by the electric field due to the sheet
if a particle of charge q = +1.60 ✕ 10−19 C is
moved from the sheet to a point P at distance d =
3.52 cm from the sheet?
(b) If the electric potential V is defined to be zero
on the sheet, what is V at P?
If a charge "Q" is removed from the inside surface of a hollow
sphere of radius "a" with infinite conductivity. (a)How much force
is required to remove the charge from the sphere? (b)How much work
is done to move the charge to a radius of infinity?
A proton is launched from an infinite plane of charge with
surface charge density -1.90×10-6 C/m2. If
the proton has an initial speed of 3.70×107 m/s, how far
does it travel before reaching its turning point?
1.20×10-6 m
1.80×10-6 m
66.6 m
133 m