I was about to say: because people generally get comfortable with
what they think they know, and don't like the discomfort of being told
that they have to change something they're comfortable with.
But then I thought about it a little bit more, and I have a different answer.
"Society" might initially reject a new scientific theory, because 'society'
is totally unequipped to render judgement of any kind regarding any
development in Science.
First of all, 'Society' is a thing that's made of a bunch of people, so it's
inherently unequipped to deal with scientific news. Anything that 'Society'
decides has a lot of the mob psychology in it, and a public opinion poll or
a popularity contest are terrible ways to evaluate a scientific discovery.
Second, let's face it. The main ingredient that comprises 'Society' ... people ...
are generally uneducated, unknowledgeable, unqualified, and clueless in the
substance, the history, and the methods of scientific inquiry and reporting.
There may be very good reasons that some particular a new scientific theory
should be rejected, or at least seriously questioned. But believe me, 'Society'
doesn't have them.
That's pretty much why.
Assuming that the students
worldwide are being considered, because of the extremely large population, this
can be considered as a binomial distribution. A normal distribution is used most
usually as a fair approximation of the binomial. The mean is the expectation,
therefore:<span>
E[x] = np = (16)(0.22) = 3.52
<span>μ = 3.52 </span></span>
Answer:
A) max = Eo = 375 V/m, B) B = 125 10⁻⁸ T
, C) f = 9.50 101⁴ Hz, D) λ = 3.158 10⁻⁷ m, E) T = 1.05 10⁻¹⁵ s
, F) invisible for humans G) v = c = 3 10⁸ m/s
Explanation:
The expression given for the electric field is
E = 375 cos (1.99 107x + 5.97 105t)
The general formula for the electric field of a transverse traveler is
E = Eo cos (kx-wt)
Where k is the wave number and w the angular velocity
A) The amplitudes as electric is
Emax = Eo = 375 V / m
B) the electric and magnetic field are related
E / B = c
B = E / c
B = 375/3 108
B = 125 10⁻⁸ T
C) angular velocity and frequency is related
.w = 2π f
f = w / 2π
f = 5.97 10¹⁵ / 2π
f = 9.50 101⁴ Hz
D) the speed of light has the formula
c = λ f
λ = c / f
λ = 3 10⁸ / 9.50 10¹⁴
λ = 3.158 10⁻⁷ m
E) The period
T = 1 / f
T = 1 / 9.5 10¹⁴
T = 1.05 10⁻¹⁵ s
F) let's reduce the wavelength nm
λ = 3.158 10⁻⁷ m (10⁹nm / 1m)
λ = 3.158 10²nm = 315.3 nm
The visible radiation range is between 400nm and 700nm. This radiation is ultraviolet and is invisible humans
G) All electromagnetic radiation has a speed at the speed of light (c)
v = c = 3 10⁸ m/s
Answer: "a stationary front" .
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