Question

Assuming spherical nuclear shapes, calculate the radii of the 12C6, 23Na11, 108Pd46, and 238U92 nuclei.

Answer #1

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Nuclear radii may be measured by scattering high-energy
electrons from nuclei. (a) What is the de Broglie
wavelength for 287 MeV electrons? (b) Are these
electrons suitable probes for this purpose?

A uniformly charged spherical shell has inner and outer radii of
25.0 cm and 32.0 cm, respectively. A point charge of −45.0 nC is
located at the center of the spherical shell. A proton orbits
around this arrangement just outside the spherical shell with a
speed of 8.37 ✕ 105 m/s. What is the volume charge density of the
spherical shell? (Include the sign of the value in your answer.)
µC/m3

Select the statement that explains why the trend in atomic radii
for main-group elements is not observed in transition elements.
As protons are added to the nuclei of the transition elements
when moving from left to right across a period, electrons are added
to the (?−1)?(n−1)d subshell. The number of electrons in the
outermost shell (?n) remain constant. This results in a roughly
constant effective nuclear charge.
As protons are added to the nuclei of the transition elements
when moving...

The pores in a solid consist of cylindrical tubes of radii 16
nm ending with spherical cavities of radii 41 nm. Calculate the
relative pressure at which capillary condensation of nitrogen at 77
K (the boiling temperature at atmospheric pressure) would occur in
each section. In this experiment, the gas pressure is being
gradually increased, so there has been prior adsorption covering
the surfaces of both sections with a 1 nm layer of nitrogen
(approximately 2 layers and sufficient to...

Complete each nuclear equation. (Give all nuclei in the form A X
Z .) a. 77 Rb 37 → + 0 e +1 b. 251 No 102 → + 4 He 2 c. 66 Cu 29 →
+ 0 e −1

Two concentric uniform thin spherical shells have masses M1 and
M2 and radii a and 2a. The inner spherical shell is shifted so that
its center is now on the x axis at x = 0.8a. What is the magnitude
of the gravitational force on a particle of point mass m located on
the x axis at the following? (Use any variable or symbol stated
above along with the following as necessary: (a) x = 3a

Two concentric conductive spherical shells with radii 5 and 10
cm are initially charged with 10 and -5uC, respectively. Now, the
spheres are connected with a conducting wire. After some time, what
is the electric potential at a point 20 cm away from the
origin?

The space between two concentric conducting spherical shells of
radii b = 1.70 cm and a = 1.00 cm is filled with
a substance of dielectric constant κ = 15.1. A potential difference
V = 65.0 V is applied across the inner and outer shells.
Determine (a) the capacitance of the device,
(b) the free charge q on the inner shell,
and (c) the charge q induced along the
surface of the inner shell.

Three concentric spherical conductive shells of radii 5 cm, 10
cm, and 15 cm are charged with 2 μC, 4 μC, and -6 μC, respectively.
What is the electric field at r=2.5 cm, r=12 cm, and r=20 cm?
E1= ________________ V/m
E2= ________________ V/m
E3= ________________ V/m
What are the electric potentials at these points?
V1=___________V
V2=___________V
V3=___________V

Four concentric spherical conductive shells of radii 5 cm, 10
cm, 15 cm, and 20 cm are charged with 4 μC, 7 μC, -15 μC, and -5
μC, respectively. What is the electric field at r=3.5 cm, r=16 cm,
and r=25 cm?
E1=_________V/m
E2=_________V/m
E3=_________V/m
What are the electric potentials at these points?
V1=__________V
V2=__________V
V3=__________V

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