What are three characteristics a koala probably inherited from its parent
1 answer:
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To solve this problem we will apply the concepts related to electric potential energy. This relationship shows us that energy is equivalent to half the product between the capacitance of the body by the squared voltage. Mathematically it can be expressed as,
Here,
C = Capacitance
V = Voltage
E = Energy
The initial capacitance would then be given by
Energy stored in the capacitor with 3V is
Therefore the energy stored in the capacitor if it is charged to 3V is 8mJ
Answer:
speed of the proton is 6.286 × m/s
Explanation:
given data
charge q= −60.0 nC
inner radius a = 20.0 cm
outer radius b = 24.0 cm
charge density ρ = −2.05 µC/m³
to find out
What is the speed of the proton
solution
we know that force on the proton due to this electric field is express as
F = q × E ...................1
here F is force and q is charge and E is electric filed so
if v be the speed of the proton in circular orbit than force will be
F = ....................2
from equation 1 and 2
q × E = .......................3
so
here total charge Q on shell is
Q = ρ × V
here ρ is density and V is volume
Q =
put here value
Q =
Q = 50.01 × C
and
total charge enclosed by Gaussian surface is
qin = q + Q
qin = −60 × C - 50.01 ×
C
qin = - 110.01 × C
and
from Gauss law
E ×4×π×b² =
E =
E =
E = 17189.06 N/C
so
from equation 3
q × E =
v =
v =
v = 6.286 × m/s
so speed of the proton is 6.286 × m/s