Answer: Elements in the same period have the same number of electron shells; moving across a period ( elements gain electrons and protons and become less metallic. This arrangement reflects the periodic recurrence of similar properties as the atomic number increases.
Answer:
The center of mass changes
Explanation:
The higher the center of mass the more likely things are to topple over but the lower it is the more likely to stay put when all 4 wheels are down .
Answer:
Explanation:
Given
for
Sphere are
when sphere apart suppose deflection is
We know
Where F=force between charged particle
Deflection
thus
for
(b)for deflection Potential
Electric Potential is
where V=voltage
k=constant
r=distance between charges
Put value of Q in equation 1
thus
therefore
For this problem, we use the decay equation which is expressed as:
An = (Ao)e^-kt
where An is the amount left in t time, Ao is the initial amount and k is a constant.
We first calculate the value of k as follows:
An = (Ao)e^-kt
0.5 = e^-k(8)
k = 0.087
We calculate the time as follows:
An = (Ao)e^-kt
15.625 = 250e^-0.087t
t = 31.87 days
Answer:
magnetic field = - 6.137 × T
Explanation:
given data
radio wave λ = 0.3 m
intensity I = 45 W/m²
time t = 0
time t = 1.5 ns
to find out
What is Bz
solution
we use here equation of intensity of radiation of electric field that is express as
intensity = .................1
here we know intensity 45 and c is 3 × m/s² and ∈o is 8.85 × C²/N.m² and E will be here
E = ...............2
E =
E = 184.15
and
E = .................3
184.15 =
= 6.137 × T
and in z axis magnetic field will be here as
B = ..............4
here k =
k = = 20.94
and
f =
f = =
so here
time t =
t = =
so ω =
ω =
ω = 6.28 ×
so now from equation 4
B =
B =
B = - 6.137 ×
so magnetic field = - 6.137 × T